Publications 2019

Drangsholt SH, Cappelen UW, von der Lippe N, Høieggen A, Os I, Brekke FB (2019)
Beliefs about medicines in dialysis patients and after renal transplantation
Hemodial Int, 23 (1), 117-125
DOI 10.1111/hdi.12717, PubMed 30714322

Kjeldsen SE, Os I, Westheim A (2019)
Could adverse events offset the benefit of intensive blood pressure lowering treatment in the Systolic Blood Pressure Intervention Trial?
J Hypertens, 37 (5), 902-904
DOI 10.1097/HJH.0000000000002018, PubMed 30920495

Parker K, Bull-Engelstad I, Aasebø W, von der Lippe N, Reier-Nilsen M, Os I, Stavem K (2019)
Medication regimen complexity and medication adherence in elderly patients with chronic kidney disease
Hemodial Int (in press)
DOI 10.1111/hdi.12739, PubMed 30779285

Stubnova V, Os I, Høieggen A, Solbu MD, Grundtvig M, Westheim AS, Atar D, Waldum-Grevbo B (2019)
Gender differences in association between uric acid and all-cause mortality in patients with chronic heart failure
BMC Cardiovasc Disord, 19 (1), 4
DOI 10.1186/s12872-018-0989-8, PubMed 30611196

Publications 2018

Kjeldsen SE, Os I, Nilsson PM (2018)
Does Intensive Glucose Control Cancel Out Benefits of Systolic Blood Pressure Target <120 mm Hg in Patients With Diabetes Mellitus Participating in ACCORD?
Hypertension, 72 (2), 291-293
DOI 10.1161/HYPERTENSIONAHA.118.11455, PubMed 29967041

Kjeldsen SE, Stenehjem AE, Os I, van den Borne P (2018)
European Society of Hypertension Scientific Newsletter: Update on Hypertension Management 2016; 17: Nr. 63* Treatment of High Blood Pressure in Elderly and Octogenarians
J. Hyperton., 22 (2), 46-48

Os I, Jensen HLB, Langballe MG, Rosvold EO, Grasmo-Wendler UH (2018)
It's time for aptitude test for medical students
Tidsskr. Nor. Laegeforen., 138 (12), 1160-1163

Os I, Jensen HLB, Langballe MG, Rosvold EO, Grasmo-Wendler UH (2018)
[Time for suitability tests for medical students]
Tidsskr Nor Laegeforen, 138 (12)
DOI 10.4045/tidsskr.18.0416, PubMed 30132614

Os I, Langballe M, Jensen HLB, Rosvold EO, Grasmo-Wendler UH (2018)
[Admission to medical studies – should we consider more than grades?]
Tidsskr Nor Laegeforen, 138 (12)
DOI 10.4045/tidsskr.18.0385, PubMed 30132613

Os I, Langballe MG, Jensen HLB, Rosvold EO, Grasmo-Wendler UH (2018)
Admission to medical studies- should we consider more than grades?
Tidsskr. Nor. Laegeforen., 138 (12), 1157-1159

Publications 2017

Frich JC, Breivik J, Lundin KEA, Rosvold EO, Os I (2017)
Electives in the medical degree programme
Tidsskr Nor Laegeforen, 137 (20)
DOI 10.4045/tidsskr.17.0549, PubMed 29094564

Frich JC, Breivik J, Lundin KEA, Rosvold EO, Os I (2017)
Elective courses in medicine studies
Tidsskr. Nor. Laegeforen., 137 (20), 1592-1594

Kjeldsen SE, Os I (2017)
Interventions to improve adherence of antihypertensive medication in African-Americans
J Hypertens, 35 (6), 1164-1165
DOI 10.1097/HJH.0000000000001249, PubMed 28441256

Manner IW, Waldum-Grevbo B, Witczak BN, Bækken M, Øktedalen O, Os I, Schwartz T, Sjaastad I (2017)
Immune markers, diurnal blood pressure profile and cardiac function in virologically suppressed HIV-infected patients
Blood Press, 26 (6), 332-340
DOI 10.1080/08037051.2017.1346459, PubMed 28675304

Os I (2017)
Profesjonsutdanning
Tidsskr Nor Laegeforen, 137 (23-24)
DOI 10.4045/tidsskr.17.0833, PubMed 29231651

Os I (2017)
Qualification for professional practice
Tidsskr. Nor. Laegeforen., 137 (23-24), 1955

Os I (2017)
Medicine
Tidsskr. Nor. Laegeforen., 137 (11), 816

Os I (2017)
Kompakt, men lettlest om nefrologi og urologi
Tidsskr Nor Laegeforen, 137 (19)
DOI 10.4045/tidsskr.17.0607, PubMed 29043754

Os I (2017)
NEUROSCIENCE IN CLINICAL PRACTICE
Tidsskr. Nor. Laegeforen., 137 (19), 1544

Stubnova V, Os I, Grundtvig M, Atar D, Waldum-Grevbo B (2017)
Spironolactone Treatment and Effect on Survival in Chronic Heart Failure Patients with Reduced Renal Function: A Propensity-Matched Study
Cardiorenal Med, 7 (2), 128-136
DOI 10.1159/000454933, PubMed 28611786

Publications 2016

Brekke FB, Waldum-Grevbo B, von der Lippe N, Os I (2016)
The effect of renal transplantation on quality of sleep in former dialysis patients
Transpl Int, 30 (1), 49-56
DOI 10.1111/tri.12866, PubMed 27696543

Frich JC, Os I (2016)
[New medical curriculum - Oslo 2014]
Tidsskr Nor Laegeforen, 136 (14-15), 1189-90
DOI 10.4045/tidsskr.16.0493, PubMed 27554551

Kjeldsen SE, Os I (2016)
High blood pressure in US diabetic veterans with normal renal function: a plea for the design of a more powerful and conclusive outcome trial
J Hypertens, 34 (5), 836-7
DOI 10.1097/HJH.0000000000000896, PubMed 27027378

Kjeldsen SE, Os I (2016)
Hypertension: When should we treat hypertension in patients with diabetes?
Nat Rev Cardiol, 13 (5), 252-3
DOI 10.1038/nrcardio.2016.49, PubMed 27053453

Kjeldsen SE, Os I, Redon J (2016)
Treatment of hypertension and the price to pay; adverse events and discontinuation from randomized treatment in clinical trials
J Hypertens, 34 (8), 1489-91
DOI 10.1097/HJH.0000000000001002, PubMed 27355995

Kjeldsen SE, Stenehjem A, Os I, Van de Borne P, Burnier M, Narkiewicz K, Redon J, Agabiti Rosei E, Mancia G (2016)
Treatment of high blood pressure in elderly and octogenarians: European Society of Hypertension statement on blood pressure targets
Blood Press, 25 (6), 333-336
DOI 10.1080/08037051.2016.1236329, PubMed 27644446

Os I (2016)
Clinical shoulder
Tidsskr. Nor. Laegeforen., 136 (22), 1913

Os I (2016)
The most common in medicine and surgery
Tidsskr. Nor. Laegeforen., 136 (14-15), 1256

Os I (2016)
Diagnostic Sciences
Tidsskr. Nor. Laegeforen., 136 (18), 1567

Stubnova V, Os I, Grundtvig M, Waldum-Grevbo B (2016)
Prevalent Diabetes Mellitus: Mortality and Management in Norwegian Heart Failure Outpatients
Cardiology, 134 (4), 413-22
DOI 10.1159/000444658, PubMed 27120050

von der Lippe N, Waldum-Grevbo B, Varberg Reisæter A, Os I (2016)
Is HRQOL in dialysis associated with patient survival or graft function after kidney transplantation?
BMC Nephrol, 17, 94
DOI 10.1186/s12882-016-0316-5, PubMed 27456506

Publications 2015

Amro A, Waldum-Grevbo B, von der Lippe N, Brekke FB, Miaskowski C, Os I (2015)
Symptom Clusters From Dialysis to Renal Transplantation: A Five-Year Longitudinal Study
J Pain Symptom Manage, 51 (3), 512-9
DOI 10.1016/j.jpainsymman.2015.10.012, PubMed 26550937

Kjeldsen SE, Fadl Elmula FE, Os I, Persu A, Jin Y, Staessen JA (2015)
Renal sympathetic denervation after Symplicity HTN-3 and therapeutic drug monitoring in patients with resistant hypertension to improve patients' adherence
Eur Heart J Cardiovasc Pharmacother, 1 (1), 48-56
DOI 10.1093/ehjcvp/pvu009, PubMed 27533966

Waldum-Grevbo B, Leivestad T, Reisæter AV, Os I (2015)
Impact of initial dialysis modality on mortality: a propensity-matched study
BMC Nephrol, 16, 179
DOI 10.1186/s12882-015-0175-5, PubMed 26519164

Publications 2014

Amro A, Waldum B, Dammen T, Miaskowski C, Os I (2014)
Symptom clusters in patients on dialysis and their association with quality-of-life outcomes
J Ren Care, 40 (1), 23-33
DOI 10.1111/jorc.12051, PubMed 24438743

Amro A, Waldum B, von der Lippe N, Brekke FB, Dammen T, Miaskowski C, Os I (2014)
Symptom clusters predict mortality among dialysis patients in Norway: a prospective observational cohort study
J Pain Symptom Manage, 49 (1), 27-35
DOI 10.1016/j.jpainsymman.2014.04.005, PubMed 24858738

Beitland S, Os I, Sunde K (2014)
Primary injuries and secondary organ failures in trauma patients with acute kidney injury treated with continuous renal replacement therapy
Scientifica (Cairo), 2014, 235215
DOI 10.1155/2014/235215, PubMed 25587490

Fadl Elmula FE, Hoffmann P, Larstorp AC, Fossum E, Brekke M, Kjeldsen SE, Gjønnæss E, Hjørnholm U, Kjaer VN, Rostrup M, Os I, Stenehjem A, Høieggen A (2014)
Adjusted drug treatment is superior to renal sympathetic denervation in patients with true treatment-resistant hypertension
Hypertension, 63 (5), 991-9
DOI 10.1161/HYPERTENSIONAHA.114.03246, PubMed 24591332

Frich J, Lundin KE, Os I (2014)
[J. Frich and colleagues reply]
Tidsskr Nor Laegeforen, 134 (5), 496; discussion 497
DOI 10.4045/tidsskr.14.0202, PubMed 24621892

Frich J, Lundin KE, Os I (2014)
[The grading system--balancing various interests]
Tidsskr Nor Laegeforen, 134 (1), 14-5
DOI 10.4045/tidsskr.13.1338, PubMed 24429749

Gerdts E, Aksnes TA, Hultström M, Kjeldsen SE, Os I (2014)
Ingrid Toft (June 2, 1959-April 26, 2014)
Blood Press, 23 (4), 255
DOI 10.3109/08037051.2014.938919, PubMed 25014276

Kjeldsen SE, Os I (2014)
Cost-effectiveness of therapeutic drug monitoring in patients with resistant hypertension and improving patients' adherence
J Hypertens, 32 (12), 2357-8
DOI 10.1097/HJH.0000000000000385, PubMed 25376250

Kjeldsen SE, Sørensen H, Fadl Elmula FE, Brekke M, Gjønnæss E, Hjørnholm U, Kjære VN, Rostrup M, Fossum E, Os I, Stenehjem A, Høieggen A, Hoffmann P (2014)
[Re: Renal sympathetic denervation in treatment-resistant hypertension]
Tidsskr Nor Laegeforen, 134 (15), 1449-50
DOI 10.4045/tidsskr.14.0931, PubMed 25138398

Manner IW, Baekken M, Oektedalen O, Kvale D, Nowak P, Nielsen SD, Os I, Trøseid M (2014)
Plasma lipopolysaccharide and triglycerides are independently associated and both markers correlate with the development of metabolic syndrome in HIV infection
J Acquir Immune Defic Syndr, 65 (4), e158-61
DOI 10.1097/QAI.0000000000000055, PubMed 24577189

Pedersen KK, Manner IW, Seljeflot I, Kvale D, Os I, Gerstoft J, Nielsen SD, Trøseid M (2014)
Monocyte activation, but not microbial translocation, is independently associated with markers of endovascular dysfunction in HIV-infected patients receiving cART
J Acquir Immune Defic Syndr, 67 (4), 370-4
DOI 10.1097/QAI.0000000000000339, PubMed 25226210

Persu A, Fadl Elmula FEM, Jin Y, Os I, Kjeldsen SE, Staessen JA (2014)
Renal Denervation After Symplicity HTN-3 - Back to Basics. Review of the Evidence
Eur Cardiol, 9 (2), 110-114
DOI 10.15420/ecr.2014.9.2.110, PubMed 30310496

Sørensen H, Fadl Elmula FE, Kjeldsen SE, Brekke M, Gjønnæss E, Hjørnholm U, Kjær VN, Rostrup M, Fossum E, Os I, Stenehjem A, Høieggen A, Hoffmann P (2014)
[Renal sympathetic denervation in treatment-resistant hypertension]
Tidsskr Nor Laegeforen, 134 (1), 32-6
DOI 10.4045/tidsskr.13.0276, PubMed 24429753

von der Lippe N, Waldum B, Brekke FB, Amro AA, Reisæter AV, Os I (2014)
From dialysis to transplantation: a 5-year longitudinal study on self-reported quality of life
BMC Nephrol, 15, 191
DOI 10.1186/1471-2369-15-191, PubMed 25465066

von der Lippe N, Waldum B, Østhus TB, Reisæter AV, Os I (2014)
Health related quality of life in patients in dialysis after renal graft loss and effect of gender
BMC Womens Health, 14 (1), 34
DOI 10.1186/1472-6874-14-34, PubMed 24580724

Publications 2013

Brekke FB, Amro A, Hortemo Østhus TB, Dammen T, Waldum B, Os I (2013)
Sleep complaints, depression and quality of life in Norwegian dialysis patients
Clin Nephrol, 80 (2), 88-97
DOI 10.5414/CN107916, PubMed 23611520

Brekke FB, Waldum B, Amro A, Østhus TB, Dammen T, Gudmundsdottir H, Os I (2013)
Self-perceived quality of sleep and mortality in Norwegian dialysis patients
Hemodial Int, 18 (1), 87-94
DOI 10.1111/hdi.12066, PubMed 23841517

Fadl Elmula FE, Hoffmann P, Fossum E, Brekke M, Gjønnæss E, Hjørnholm U, Kjær VN, Rostrup M, Kjeldsen SE, Os I, Stenehjem AE, Høieggen A (2013)
Renal sympathetic denervation in patients with treatment-resistant hypertension after witnessed intake of medication before qualifying ambulatory blood pressure
Hypertension, 62 (3), 526-32
DOI 10.1161/HYPERTENSIONAHA.113.01452, PubMed 23836798

Frich JC, Middelthon IM, Os I (2013)
[Integrated curricula--organizationally demanding]
Tidsskr Nor Laegeforen, 133 (8), 831
DOI 10.4045/tidsskr.13.0263, PubMed 23612103

Kjeldsen SE, Os I, Mahfoud F (2013)
Treatment resistant hypertension and renal sympathetic denervation: drug adherence and the consolidation of blood pressure lowering effects
EuroIntervention, 9 Suppl R, R7-9
DOI 10.4244/EIJV9SRA1, PubMed 23732159

Manner IW, Baekken M, Kvale D, Oektedalen O, Pedersen M, Nielsen SD, Nowak P, Os I, Trøseid M (2013)
Markers of microbial translocation predict hypertension in HIV-infected individuals
HIV Med, 14 (6), 354-61
DOI 10.1111/hiv.12015, PubMed 23332095

Preljevic VT, Østhus TB, Os I, Sandvik L, Opjordsmoen S, Nordhus IH, Dammen T (2013)
Anxiety and depressive disorders in dialysis patients: association to health-related quality of life and mortality
Gen Hosp Psychiatry, 35 (6), 619-24
DOI 10.1016/j.genhosppsych.2013.05.006, PubMed 23896282

Smedbråten YV, Sagedal S, Leivestad T, Mjøen G, Osnes K, Rollag H, Reisaeter AV, Foss A, Os I, Hartmann A (2013)
The impact of early cytomegalovirus infection after kidney transplantation on long-term graft and patient survival
Clin Transplant, 28 (1), 120-6
DOI 10.1111/ctr.12288, PubMed 24351078

Waldum B, Os I (2013)
The cardiorenal syndrome: what the cardiologist needs to know
Cardiology, 126 (3), 175-86
DOI 10.1159/000353261, PubMed 24022166

Publications 2012

Beitland S, Sunde K, Moen H, Os I (2012)
Variability in Uremic Control during Continuous Venovenous Hemodiafiltration in Trauma Patients
Crit Care Res Pract, 2012, 869237
DOI 10.1155/2012/869237, PubMed 22666569

Damås JK, Bækken M, Ueland T, Manner IW, Os I, Yndestad A, Flo TH, Øktedalen O, Aukrust P (2012)
Serum levels of neutrophil gelatinase-associated lipocalin are associated with microalbuminuria in HIV-infected patients
J Acquir Immune Defic Syndr, 59 (2), e24-5
DOI 10.1097/QAI.0b013e31823f35a7, PubMed 22245717

Fyhrquist F, Eriksson A, Saijonmaa O, Nordestgaard BG, Kontula K, de Faire U, Ibsen H, Kjeldsen S, Os I, Dahlöf B (2012)
Telomere length is associated with ACE I/D polymorphism in hypertensive patients with left ventricular hypertrophy
J Renin Angiotensin Aldosterone Syst, 14 (3), 227-34
DOI 10.1177/1470320312460292, PubMed 23077078

Gudmundsdottir H, Høieggen A, Stenehjem A, Waldum B, Os I (2012)
Hypertension in women: latest findings and clinical implications
Ther Adv Chronic Dis, 3 (3), 137-46
DOI 10.1177/2040622312438935, PubMed 23251774

Høieggen A, Os I (2012)
[Serious illness--tough treatment]
Tidsskr Nor Laegeforen, 132 (14), 1624-5
DOI 10.4045/tidsskr.12.0424, PubMed 22875129

Høieggen A, Os I (2012)
[Kidney injuries caused by drugs]
Tidsskr Nor Laegeforen, 132 (12-13), 1462-4
DOI 10.4045/tidsskr.11.0773, PubMed 22766820

Manner IW, Baekken M, Oektedalen O, Os I (2012)
Hypertension and antihypertensive treatment in HIV-infected individuals. A longitudinal cohort study
Blood Press, 21 (5), 311-9
DOI 10.3109/08037051.2012.680742, PubMed 22564000

Manner IW, Trøseid M, Oektedalen O, Baekken M, Os I (2012)
Low nadir CD4 cell count predicts sustained hypertension in HIV-infected individuals
J Clin Hypertens (Greenwich), 15 (2), 101-6
DOI 10.1111/jch.12029, PubMed 23339727

Nordstrand N, Hertel JK, Hofsø D, Sandbu R, Saltvedt E, Røislien J, Os I, Hjelmesaeth J (2012)
A controlled clinical trial of the effect of gastric bypass surgery and intensive lifestyle intervention on nocturnal hypertension and the circadian blood pressure rhythm in patients with morbid obesity
Surgery, 151 (5), 674-80
DOI 10.1016/j.surg.2011.12.007, PubMed 22261295

Osthus TB, von der Lippe N, Ribu L, Rustøen T, Leivestad T, Dammen T, Os I (2012)
Health-related quality of life and all-cause mortality in patients with diabetes on dialysis
BMC Nephrol, 13, 78
DOI 10.1186/1471-2369-13-78, PubMed 22863310

Preljevic VT, Østhus TB, Sandvik L, Opjordsmoen S, Nordhus IH, Os I, Dammen T (2012)
Screening for anxiety and depression in dialysis patients: comparison of the Hospital Anxiety and Depression Scale and the Beck Depression Inventory
J Psychosom Res, 73 (2), 139-44
DOI 10.1016/j.jpsychores.2012.04.015, PubMed 22789418

Waldum B, Stubnova V, Westheim AS, Omland T, Grundtvig M, Os I (2012)
Prognostic utility of B-type natriuretic peptides in patients with heart failure and renal dysfunction
Clin Kidney J, 6 (1), 55-62
DOI 10.1093/ckj/sfs174, PubMed 24422171

Waldum B, Westheim AS, Sandvik L, Flønæs B, Grundtvig M, Gullestad L, Hole T, Os I (2012)
Baseline anemia is not a predictor of all-cause mortality in outpatients with advanced heart failure or severe renal dysfunction. Results from the Norwegian Heart Failure Registry
J Am Coll Cardiol, 59 (4), 371-8
DOI 10.1016/j.jacc.2011.10.864, PubMed 22261159

Østhus TB, Preljevic VT, Sandvik L, Leivestad T, Nordhus IH, Dammen T, Os I (2012)
Mortality and health-related quality of life in prevalent dialysis patients: Comparison between 12-items and 36-items short-form health survey
Health Qual Life Outcomes, 10, 46
DOI 10.1186/1477-7525-10-46, PubMed 22559816

Publications 2011

Fyhrquist F, Silventoinen K, Saijonmaa O, Kontula K, Devereux RB, de Faire U, Os I, Dahlöf B (2011)
Telomere length and cardiovascular risk in hypertensive patients with left ventricular hypertrophy: the LIFE study
J Hum Hypertens, 25 (12), 711-8
DOI 10.1038/jhh.2011.57, PubMed 21697896

Nordstrand N, Gjevestad E, Dinh KN, Hofsø D, Røislien J, Saltvedt E, Os I, Hjelmesæth J (2011)
The relationship between various measures of obesity and arterial stiffness in morbidly obese patients
BMC Cardiovasc Disord, 11, 7
DOI 10.1186/1471-2261-11-7, PubMed 21284837

Os I, Gudmundsdottir H, Draganov B, von der Lippe E (2011)
Sterile peritonitis associated with amino acid-containing dialysate--a single center experience in Norway
Perit Dial Int, 31 (1), 103
DOI 10.3747/PDI.2010.00298, PubMed 21282392

Preljevic VT, Østhus TB, Sandvik L, Bringager CB, Opjordsmoen S, Nordhus IH, Os I, Dammen T (2011)
Psychiatric disorders, body mass index and C-reactive protein in dialysis patients
Gen Hosp Psychiatry, 33 (5), 454-61
DOI 10.1016/j.genhosppsych.2011.06.010, PubMed 21831445

Sagedal S, Witczak BJ, Osnes K, Hartmann A, Os I, Eikvar L, Klingenberg O, Brosstad F (2011)
A heparin-coated dialysis filter (AN69 ST) does not reduce clotting during hemodialysis when compared to a conventional polysulfone filter (F×8)
Blood Purif, 32 (3), 151-5
DOI 10.1159/000325227, PubMed 21659742

Østhus TB, Preljevic V, Sandvik L, Dammen T, Os I (2011)
Renal transplant acceptance status, health-related quality of life and depression in dialysis patients
J Ren Care, 38 (2), 98-106
DOI 10.1111/j.1755-6686.2011.00254.x, PubMed 21917125

Publications 2010

Baekken M, Manner I, Ueland T, Frøland SS, Os I, Aukrust P, Oktedalen O, Damås JK (2010)
Osteoprotegrin and soluble tumor necrosis factor receptor 1 are associated with microalbuminuria in nontreated HIV-infected patients
J Acquir Immune Defic Syndr, 53 (3), 419-20
DOI 10.1097/QAI.0b013e3181ba4101, PubMed 20190590

Beitland S, Moen H, Os I (2010)
Acute kidney injury with renal replacement therapy in trauma patients
Acta Anaesthesiol Scand, 54 (7), 833-40
DOI 10.1111/j.1399-6576.2010.02253.x, PubMed 20528778

Hedner T, Oparil S, Narkiewicz K, Os I (2010)
Cardiovascular risks in HIV patients
Blood Press, 19 (6), 325-7
DOI 10.3109/08037051.2010.537016, PubMed 21080761

Manner IW, Baekken M, Oektedalen O, Sandvik L, Os I (2010)
Effect of HIV duration on ambulatory blood pressure in HIV-infected individuals with high office blood pressure
Blood Press, 19 (3), 188-95
DOI 10.3109/08037051.2010.483055, PubMed 20482442

Norby GE, Lerang K, Holdaas H, Gran JT, Strøm EH, Draganov B, Os I, Hartmann A, Gilboe IM (2010)
[Lupus-nephritis--diagnosis and treatment]
Tidsskr Nor Laegeforen, 130 (11), 1140-4
DOI 10.4045/tidsskr.09.0583, PubMed 20531500

Nordestgaard BG, Kontula K, Benn M, Dahlöf B, de Faire U, Edelman JM, Eliasson E, Fyhrquist F, Hille DA, Ibsen H, Lyle PA, Berg K, Sandberg M, Sethi AA, Wong PH, Os I (2010)
Effect of ACE insertion/deletion and 12 other polymorphisms on clinical outcomes and response to treatment in the LIFE study
Pharmacogenet Genomics, 20 (2), 77-85
DOI 10.1097/FPC.0b013e328333f70b, PubMed 20065889

Vervloet M, Bencova V, Malberti F, Ashman N, Os I, Saha H, Ureña P, Zitt E, Rix M, Ryba M, Fouque D, Dehmel B, Petavy F, Jacobson SH (2010)
"Real-World" use of cinacalcet for managing SHPT in different European countries: analysis of data from the ECHO observational study
Clin Nephrol, 74 (3), 198-208
DOI 10.5414/cnp74198, PubMed 20860904

Waldum B, Westheim AS, Sandvik L, Flønaes B, Grundtvig M, Gullestad L, Hole T, Os I (2010)
Renal function in outpatients with chronic heart failure
J Card Fail, 16 (5), 374-80
DOI 10.1016/j.cardfail.2010.01.001, PubMed 20447572

Østhus TB, Dammen T, Sandvik L, Bruun CM, Nordhus IH, Os I (2010)
Health-related quality of life and depression in dialysis patients: associations with current smoking
Scand J Urol Nephrol, 44 (1), 46-55
DOI 10.3109/00365590903449324, PubMed 20030569

Publications 2009

Gudmundsdottir H, Taarnhøj NC, Strand AH, Kjeldsen SE, Høieggen A, Os I (2009)
Blood pressure development and hypertensive retinopathy: 20-year follow-up of middle-aged normotensive and hypertensive men
J Hum Hypertens, 24 (8), 505-13
DOI 10.1038/jhh.2009.94, PubMed 20010619

Manner I, Sagedal S, Røger M, Os I (2009)
Renal amyloidosis in intravenous heroin addicts with nephrotic syndrome and renal failure
Clin Nephrol, 72 (3), 224-8
DOI 10.5414/cnp72224, PubMed 19761730

Ureña P, Jacobson SH, Zitt E, Vervloet M, Malberti F, Ashman N, Leavey S, Rix M, Os I, Saha H, Ryba M, Bencova V, Baños A, Zani V, Fouque D (2009)
Cinacalcet and achievement of the NKF/K-DOQI recommended target values for bone and mineral metabolism in real-world clinical practice--the ECHO observational study
Nephrol Dial Transplant, 24 (9), 2852-9
DOI 10.1093/ndt/gfp144, PubMed 19369690

Publications 2008

Baekken M, Os I, Sandvik L, Oektedalen O (2008)
Hypertension in an urban HIV-positive population compared with the general population: influence of combination antiretroviral therapy
J Hypertens, 26 (11), 2126-33
DOI 10.1097/HJH.0b013e32830ef5fb, PubMed 18854751

Baekken M, Os I, Sandvik L, Oektedalen O (2008)
Microalbuminuria associated with indicators of inflammatory activity in an HIV-positive population
Nephrol Dial Transplant, 23 (10), 3130-7
DOI 10.1093/ndt/gfn236, PubMed 18469311

Baekken M, Os I, Stenehjem A, Sandvik L, Oektedalen O (2008)
Association between HIV infection and attenuated diurnal blood pressure rhythm in untreated hypertensive individuals
HIV Med, 10 (1), 44-52
DOI 10.1111/j.1468-1293.2008.00655.x, PubMed 19018875

Gudmundsdottir H, Brørs O, Os I (2008)
[Metformin should not be used by patients with reduced renal function]
Tidsskr Nor Laegeforen, 128 (8), 936-7
PubMed 18431417

Gudmundsdottir H, Strand AH, Høieggen A, Reims HM, Westheim AS, Eide IK, Kjeldsen SE, Os I (2008)
Do screening blood pressure and plasma catecholamines predict development of hypertension? Twenty-year follow-up of middle-aged men
Blood Press, 17 (2), 94-103
DOI 10.1080/08037050801972923, PubMed 18568698

Gudmundsdottir H, Strand AH, Kjeldsen SE, Høieggen A, Os I (2008)
Serum phosphate, blood pressure, and the metabolic syndrome--20-year follow-up of middle-aged men
J Clin Hypertens (Greenwich), 10 (11), 814-21
DOI 10.1111/j.1751-7176.2008.00032.x, PubMed 19128269

Os I (2008)
[Cardiovascular disease in chronic kidney failure]
Tidsskr Nor Laegeforen, 128 (11), 1297
PubMed 18546586

Os I, Devereux RB, Okin PM (2008)
Gender differences in left ventricular hypertrophy regression - Response
Hypertension, 51 (6), E59

Os I, Franco V, Kjeldsen SE, Manhem K, Devereux RB, Gerdts E, Hille DA, Lyle PA, Okin PM, Dahlöf B, Oparil S (2008)
Effects of losartan in women with hypertension and left ventricular hypertrophy: results from the Losartan Intervention for Endpoint Reduction in Hypertension Study
Hypertension, 51 (4), 1103-8
DOI 10.1161/HYPERTENSIONAHA.107.105296, PubMed 18259029

Strand A, Kjeldsen SE, Gudmundsdottir H, Os I, Smith G, Bjørnerheim R (2008)
Tissue Doppler imaging describes diastolic function in men prone to develop hypertension over twenty years
Eur J Echocardiogr, 9 (1), 34-9
DOI 10.1016/j.euje.2007.02.007, PubMed 17448731

Publications 2007

Jonsson G, Abdelnoor M, Seljeflot I, Arnesen H, Hostmark AT, Kjeldsen SE, Os I, Westheim AS (2007)
The antioxidative effects of long-term treatment are more pronounced for carvedilol than for atenolol in post-myocardial infarction patients
J Cardiovasc Pharmacol, 49 (1), 27-32
DOI 10.1097/FJC.0b013e31802bdd8c, PubMed 17261960

Kjeldsen SE, Lyle PA, Kizer JR, Oparil S, Høieggen A, Os I (2007)
Fixed combination of losartan and hydrochlorothiazide and reduction of risk of stroke
Vasc Health Risk Manag, 3 (3), 299-305
PubMed 17703637

Nordal EJ, Os I (2007)
[Uremic pruritus--pathogenesis and treatment]
Tidsskr Nor Laegeforen, 127 (9), 1201-3
PubMed 17479139

Singer JB, Holdaas H, Jardine AG, Fellstrøm B, Os I, Bermann G, Meyer JM, Assessment of Lescol in Renal Transplantation (ALERT) Study Investigators (2007)
Genetic analysis of fluvastatin response and dyslipidemia in renal transplant recipients
J Lipid Res, 48 (9), 2072-8
DOI 10.1194/jlr.M700076-JLR200, PubMed 17563401

Smebye ML, Iversen EK, Høieggen A, Flaa A, Os I, Kjeldsen SE, Olsen MH, Chattopadhyay A, Hille DA, Lyle PA, Devereux RB, Dahlöf B (2007)
Effect of hemoglobin levels on cardiovascular outcomes in patients with isolated systolic hypertension and left ventricular hypertrophy (from the LIFE study)
Am J Cardiol, 100 (5), 855-9
DOI 10.1016/j.amjcard.2007.03.109, PubMed 17719333

Stenehjem AE, Bjørnerheim R, Os I (2007)
From treatment to organ damage; a 5-year follow-up study of ambulatory blood pressure in essential hypertension. Diversity between development of left ventricular hypertrophy and urinary albumin excretion
Blood Press, 16 (2), 87-94
DOI 10.1080/08037050701287703, PubMed 17612906

Strand A, Gudmundsdottir H, Høieggen A, Fossum E, Bjørnerheim R, Os I, Kjeldsen SE (2007)
Increased hematocrit before blood pressure in men who develop hypertension over 20 years
J Am Soc Hypertens, 1 (6), 400-6
DOI 10.1016/j.jash.2007.07.002, PubMed 20409872

Strand AH, Gudmundsdottir H, Fossum E, Os I, Bjørnerheim R, Kjeldsen SE (2007)
Arterial plasma vasopressin and aldosterone predict left ventricular mass in men who develop hypertension over 20 years
J Clin Hypertens (Greenwich), 9 (5), 365-71
PubMed 17485972

Øien CM, Reisaeter AV, Leivestad T, Dekker FW, Line PD, Os I (2007)
Living donor kidney transplantation: the effects of donor age and gender on short- and long-term outcomes
Transplantation, 83 (5), 600-6
DOI 10.1097/01.tp.0000255583.34329.dd, PubMed 17353781

Publications 2006

Aksnes TA, Reims HM, Guptha S, Moan A, Os I, Kjeldsen SE (2006)
Improved insulin sensitivity with the angiotensin II-receptor blocker losartan in patients with hypertension and other cardiovascular risk factors
J Hum Hypertens, 20 (11), 860-6
DOI 10.1038/sj.jhh.1002087, PubMed 16988754

Gudmundsdottir H, Aksnes H, Heldal K, Krogh A, Froyshov S, Rudberg N, Os I (2006)
Metformin and antihypertensive therapy with drugs blocking the renin angiotensin system, a cause of concern?
Clin Nephrol, 66 (5), 380-5
DOI 10.5414/cnp66380, PubMed 17140168

Hartmann A, Holdaas H, Os I, Hunderi OH, Hallan S, Widerøe TE, Svarstad E, Selvig K, Skjønsberg H, Toft I (2006)
[Staging and measurement of renal function in chronic renal conditions]
Tidsskr Nor Laegeforen, 126 (9), 1198-200
PubMed 16670740

Jonsson G, Abdelnoor M, Landaas S, Muller C, Kjeldsen SE, Os I, Westheim A (2006)
N-terminal pro-B-type natriuretic peptide in risk stratification after acute myocardial infarction in patients on long-term beta-adrenergic receptor blocker therapy
Cardiology, 106 (2), 102-8
DOI 10.1159/000092743, PubMed 16636540

Oien CM, Reisaeter AV, Os I, Jardine A, Fellström B, Holdaas H (2006)
Gender-associated risk factors for cardiac end points and total mortality after renal transplantation: post hoc analysis of the ALERT study
Clin Transplant, 20 (3), 374-82
DOI 10.1111/j.1399-0012.2006.00496.x, PubMed 16824157

Os I (2006)
Comparison of doxazosin GITS and standard doxazosin in the treatment of high blood pressure
Int J Clin Pharmacol Ther, 44 (3), 99-106
DOI 10.5414/cpp44099, PubMed 16550731

Os I, Gudmundsdottir H, Kjeldsen SE, Oparil S (2006)
Treatment of isolated systolic hypertension in diabetes mellitus type 2
Diabetes Obes Metab, 8 (4), 381-7
DOI 10.1111/j.1463-1326.2005.00523.x, PubMed 16776744

Reikvam A, Hexeberg S, Kvien TK, Slørdal L, Aabakken L, Engebretsen L, Flatø B, Idsø N, Johnsen V, Kalstad S, Madsen S, Mikkelsen K, Os I, REder J (2006)
[Clinical use of COX inhibitors--a consensus]
Tidsskr Nor Laegeforen, 126 (5), 591-5
PubMed 16505867

Stenehjem AE, Gudmundsdottir H, Os I (2006)
Office blood pressure measurements overestimate blood pressure control in renal transplant patients
Blood Press Monit, 11 (3), 125-33
DOI 10.1097/01.mbp.0000209080.24870.2d, PubMed 16702821

Stenehjem AE, Os I (2006)
Clinical utility and applicability of smoothness index, normalized smoothness index and individualized RDH index during treatment of essential hypertension
Blood Press, 15 (5), 281-90
DOI 10.1080/08037050600996628, PubMed 17380846

Strand AH, Gudmundsdottir H, Os I, Smith G, Westheim AS, Bjørnerheim R, Kjeldsen SE (2006)
Arterial plasma noradrenaline predicts left ventricular mass independently of blood pressure and body build in men who develop hypertension over 20 years
J Hypertens, 24 (5), 905-13
DOI 10.1097/01.hjh.0000222761.07477.7b, PubMed 16612253

Publications 2005

Eilertsen AL, Høibraaten E, Os I, Andersen TO, Sandvik L, Sandset PM (2005)
The effects of oral and transdermal hormone replacement therapy on C-reactive protein levels and other inflammatory markers in women with high risk of thrombosis
Maturitas, 52 (2), 111-8
DOI 10.1016/j.maturitas.2005.01.004, PubMed 16186073

Høieggen A, Os I, Kjeldsen SE (2005)
[Uric acid--more deleterious than we thought?]
Tidsskr Nor Laegeforen, 125 (10), 1330-2
PubMed 15909004

Jonsson G, Abdelnoor M, Müller C, Kjeldsen SE, Os I, Westheim A (2005)
A comparison of the two beta-blockers carvedilol and atenolol on left ventricular ejection fraction and clinical endpoints after myocardial infarction. a single-centre, randomized study of 232 patients
Cardiology, 103 (3), 148-55
DOI 10.1159/000084584, PubMed 15785019

Kjeldsen SE, Os I, Høieggen A, Beckey K, Gleim GW, Oparil S (2005)
Fixed-dose combinations in the management of hypertension: defining the place of angiotensin receptor antagonists and hydrochlorothiazide
Am J Cardiovasc Drugs, 5 (1), 17-22
DOI 10.2165/00129784-200505010-00003, PubMed 15631534

Kjeldsen SE, Westheim AS, Os I (2005)
Prevention of cardiovascular events and diabetes with angiotensin-receptor blockers in hypertension: LIFE, SCOPE, and VALUE
Curr Hypertens Rep, 7 (3), 155-7
DOI 10.1007/s11906-005-0001-8, PubMed 15913486

Kjeldsen SE, Westheim AS, Os I (2005)
More heat to support aggressive blood pressure lowering: the FEVER study
J Hypertens, 23 (12), 2145-6
DOI 10.1097/01.hjh.0000194123.27475.25, PubMed 16269953

Os I (2005)
[PPARgamma agonists--antidiabetics with positive effects on cardiovascular risk?]
Tidsskr Nor Laegeforen, 125 (21), 2929-31
PubMed 16276373

Os I, Os A, Abdelnoor M, Larsen A, Birkeland K, Westheim A (2005)
Insulin sensitivity in women with coronary heart disease during hormone replacement therapy
J Womens Health (Larchmt), 14 (2), 137-45
DOI 10.1089/jwh.2005.14.137, PubMed 15775731

Prøsch LK, Saelen MG, Gudmundsdottir H, Dyrbekk D, Hunderi OH, Arnesen E, Paulsen D, Skjønsberg H, Os I (2005)
Blood pressure control is hard to achieve in patients with chronic renal failure: results from a survey of renal units in Norway
Scand J Urol Nephrol, 39 (3), 242-8
DOI 10.1080/00365590510007810, PubMed 16127803

Saelen MG, Prøsch LK, Gudmundsdottir H, Dyrbekk D, Helge Hunderi O, Arnesen E, Paulsen D, Skjønsberg H, Os I (2005)
Controlling systolic blood pressure is difficult in patients with diabetic kidney disease exhibiting moderate-to-severe reductions in renal function
Blood Press, 14 (3), 170-6
DOI 10.1080/08037050510008959, PubMed 16036497

Tomson J, Os I, Lip GY (2005)
Hormone replacement use and cardiovascular function and structure in postmenopausal women
Blood Press, 14 (1), 3-5
DOI 10.1080/08037050510008841, PubMed 15823940

Øien CM, Reisaeter AV, Leivestad T, Pfeffer P, Fauchald P, Os I (2005)
Gender imbalance among donors in living kidney transplantation: the Norwegian experience
Nephrol Dial Transplant, 20 (4), 783-9
DOI 10.1093/ndt/gfh696, PubMed 15701672

Publications 2004

Kjeldsen SE, Os I, Hedner T, Himmelmann A (2004)
Renal hypertensive target organ damage--new evidence emerges in diabetics and smokers
Blood Press, 13 (6), 324-5
PubMed 15771214

Os I, Landmark K, Toft I (2004)
[Can hydrochlorothiazide and chlorthalidone be compared in the treatment of hypertension?]
Tidsskr Nor Laegeforen, 124 (6), 829
PubMed 15039824

Os I, Oparil S, Gerdts E, Høieggen A (2004)
Essential hypertension in women
Blood Press, 13 (5), 272-8
DOI 10.1080/08037050410024330, PubMed 15545149

Stenehjem AE, Os I (2004)
Reproducibility of blood pressure variability, white-coat effect and dipping pattern in untreated, uncomplicated and newly diagnosed essential hypertension
Blood Press, 13 (4), 214-24
DOI 10.1080/08037050410021432, PubMed 15581335

Publications 2003

Kjeldsen SE, Os I (2003)
Hypertension in very old people
J Hypertens, 21 (12), 2249-50
DOI 10.1097/01.hjh.0000084792.15238.17, PubMed 14654743

Os I (2003)
[COX-2 inhibitors and their effects on kidney and blood pressure]
Tidsskr Nor Laegeforen, 123 (10), 1339-41
PubMed 12806672

Os I, Fredheim CS, Draganov B, Høieggen A, Andersson KS (2003)
[Acute renal failure during the treatment of heart failure with ACE inhibitors]
Tidsskr Nor Laegeforen, 123 (1), 30-2
PubMed 12600146

Os I, Høieggen A, Larsen A, Sandset PM, Djurovic S, Berg K, Os A, Birkeland K, Westheim A (2003)
Smoking and relation to other risk factors in postmenopausal women with coronary artery disease, with particular reference to whole blood viscosity and beta-cell function
J Intern Med, 253 (2), 232-9
DOI 10.1046/j.1365-2796.2003.01110.x, PubMed 12542565

Os I, Os A, Abdelnoor M, Larsen A, Birkeland K, Westheim A (2003)
Plasma leptin in postmenopausal women with coronary artery disease: effect of transdermal 17beta-estradiol and intermittent medroxyprogesterone acetate
Climacteric, 6 (3), 204-10
DOI 10.1080/713605412, PubMed 14567768

Os I, Toft I (2003)
[Thiazides in the treatment of hypertension]
Tidsskr Nor Laegeforen, 123 (15), 2100-1
PubMed 12934147

Podzolkov VI, Bulatov VA, Son EA, Os I (2003)
Central and peripheral hemodynamic effects of losartan and in combination with hydrochlorothiazide in mild to moderate essential hypertension
Blood Press, 12 (4), 239-45
DOI 10.1080/08037050310015467, PubMed 14596361

Publications 2002

Jonsson G, Fossum E, Kjeldsen SE, Høieggen A, Os I, Eide I, Westheim A (2002)
Lower plasma noradrenaline and blood viscosity on carvedilol vs atenolol in men with recent myocardial infarction
Blood Press, 11 (6), 377-84
DOI 10.1080/080370502321095357, PubMed 12523682

Os I (2002)
[Sex differences in the risk for coronary heart disease]
Tidsskr Nor Laegeforen, 122 (22), 2225
PubMed 12426905

Os I, Djurovic S, Seljeflot I, Berg K (2002)
Transforming growth factor (TGF)-beta1 inversely related to vascular cell adhesion molecule-1 in postmenopausal women with coronary artery disease. A possible mechanism for the putative cardioprotective role of TGF-beta1?
J Intern Med, 251 (3), 223-7
DOI 10.1046/j.1365-2796.2002.00950.x, PubMed 11886481

Os I, Os A, Sandset PM, Bølling S, Seljeflot I, Djurovic S, Westheim A (2002)
Hormone replacement therapy does not affect plasma homocysteine in postmenopausal women with coronary artery disease. Free tissue factor pathway inhibitor antigen, a circulating anticoagulant, is related to plasma homocysteine
Cardiology, 98 (1-2), 6-12
DOI 10.1159/000064667, PubMed 12373040

Os I, Stenehjem A, Høieggen A, Draganov B, Jenssen T, Holdaas H (2002)
[Type 2 diabetes and nephropathy--new studies, new treatment strategies?]
Tidsskr Nor Laegeforen, 122 (9), 918-20
PubMed 12082835

Os I, Tonstad S (2002)
[Hormone replacement therapy in menopause and cardiovascular disease--one more time]
Tidsskr Nor Laegeforen, 122 (18), 1808-10
PubMed 12362695

Publications 2001

Boulatov VA, Stenehjem A, Os I (2001)
Association between albumin:creatinine ratio and 24-hour ambulatory blood pressure in essential hypertension
Am J Hypertens, 14 (4 Pt 1), 338-44
DOI 10.1016/s0895-7061(00)01278-4, PubMed 11336179

Bulatov VA, Stenehjem A, Os I (2001)
Left ventricular mass assessed by electrocardiography and albumin excretion rate as a continuum in untreated essential hypertension
J Hypertens, 19 (8), 1473-8
DOI 10.1097/00004872-200108000-00016, PubMed 11518856

Høieggen A, Draganov B, Os I (2001)
[Bilateral renal artery stenosis--a cause of acute pulmonary edema]
Tidsskr Nor Laegeforen, 121 (15), 1789-90
PubMed 11464682

Kløw NE, Draganov B, Os I (2001)
[Metformin and contrast media--increased risk of lactic acidosis?]
Tidsskr Nor Laegeforen, 121 (15), 1829
PubMed 11464691

Os I, Ström EH, Stenehjem A, Gudmundsdottir H, Langberg H, Draganov B, Godøy J, Dunlop O, von der Lippe B (2001)
Varicella infection in a renal transplant recipient associated with abdominal pain, hepatitis, and glomerulonephritis
Scand J Urol Nephrol, 35 (4), 330-3
PubMed 11676362

Sevre K, Lefrandt JD, Nordby G, Os I, Mulder M, Gans RO, Rostrup M, Smit AJ (2001)
Autonomic function in hypertensive and normotensive subjects: the importance of gender
Hypertension, 37 (6), 1351-6
DOI 10.1161/01.HYP.37.6.1351, PubMed 11408376

Stenehjem AE, Bulatov VA, Os I (2001)
[24-hour blood pressure monitoring and albumin excretion in urine in hypertension]
Tidsskr Nor Laegeforen, 121 (15), 1806-10
PubMed 11464686

Publications 2000

Birkeland KI, Claudi T, Hansteen V, Hanssen KF, Hjermann I, Jenssen T, Jervell J, Os I (2000)
[Prevention of cardiovascular disease in type 2 diabetes]
Tidsskr Nor Laegeforen, 120 (21), 2554-9
PubMed 11070996

Djurovic S, Os I, Hofstad AE, Abdelnoor M, Westheim A, Berg K (2000)
Increased plasma concentrations of TGF-beta1 after hormone replacement therapy
J Intern Med, 247 (2), 279-85
DOI 10.1046/j.1365-2796.2000.00648.x, PubMed 10692092

Hoibraaten E, Os I, Seljeflot I, Andersen TO, Hofstad A, Sandset PM (2000)
The effects of hormone replacement therapy on hemostatic variables in women with angiographically verified coronary artery disease: results from the estrogen in women with atherosclerosis study
Thromb Res, 98 (1), 19-27
DOI 10.1016/S0049-3848(99)00233-9, PubMed 10706930

Kjeldsen SE, Os I, Farsang C, Mallion JM, Hansson L, Sleight P (2000)
Treatment of hypertension in patients with type-2 diabetes mellitus
Blood Press, 9 (6), 363-4
PubMed 11212066

Kjeldsen SE, Os I, Farsang C, Mallion JM, Hansson L, Sleight P (2000)
Treatment of hypertension in patients with type-2 diabetes mellitus
J Hypertens, 18 (9), 1345-6
DOI 10.1097/00004872-200018090-00023, PubMed 10994767

Kjeldsen SE, Westheim AS, Os I (2000)
INSIGHT and NORDIL. International Nifedipine GITS study: Intervention as a Goal in Hypertension Treatment. Nordic Diltiazem Study
Lancet, 356 (9245), 1929-30
DOI 10.1016/s0140-6736(05)73480-2, PubMed 11130406

Os I, Hofstad AE, Brekke M, Abdelnoor M, Nesheim BI, Jacobsen AF, Birkeland K, Larsen A, Midtbo K, Westheim A (2000)
The EWA (estrogen in women with atherosclerosis) study: a randomized study of the use of hormone replacement therapy in women with angiographically verified coronary artery disease. Characteristics of the study population. Effects on lipids and lipoproteins
J Intern Med, 247 (4), 433-41
DOI 10.1046/j.1365-2796.2000.00675.x, PubMed 10792556

Seljeflot I, Arnesen H, Hofstad AE, Os I (2000)
Reduced expression of endothelial cell markers after long-term transdermal hormone replacement therapy in women with coronary artery disease
Thromb Haemost, 83 (6), 944-8
PubMed 10896253

Tonstad S, Os I (2000)
[Does postmenopausal hormone replacement therapy have a place in treatment of hyperlipidemia?]
Tidsskr Nor Laegeforen, 120 (8), 923-6
PubMed 10795496

Publications 1999

Kjeldsen SE, Midtbø K, Os I, Westheim A (1999)
[An overview of hypertension studies with calcium antagonists]
Tidsskr Nor Laegeforen, 119 (13), 1878-82
PubMed 10382332

Os I, Stokke HP (1999)
Doxazosin GITS compared with doxazosin standard and placebo in patients with mild hypertension
Blood Press, 8 (3), 184-91
PubMed 10595697

Os I, Stokke HP (1999)
Effects of doxazosin in the gastrointestinal therapeutic system formulation versus doxazosin standard and placebo in mild-to-moderate hypertension. Doxazosin Investigators' Study Group
J Cardiovasc Pharmacol, 33 (5), 791-7
DOI 10.1097/00005344-199905000-00017, PubMed 10226868

Publications 1998

Hofstad AE, Os I, Abdelnoor M, Platou ES, Westheim A (1998)
Evidence of excess hereditary predisposition in women with angiographically documented coronary artery disease
Cardiology, 90 (4), 249-52
DOI 10.1159/000006853, PubMed 10085484

Os I, Andersson KS, Oian P, Henriksen T (1998)
[Pregnancy, essential hypertension and chronic renal disease]
Tidsskr Nor Laegeforen, 118 (6), 884-6
PubMed 9543802

Publications 1997

Os I, Hotnes T, Dollerup J, Mogensen CE (1997)
Comparison of the combination of enalapril and a very low dose of hydrochlorothiazide with atenolol in patients with mild-to-moderate hypertension. Scandinavian Study Group
Am J Hypertens, 10 (8), 899-904
DOI 10.1016/s0895-7061(97)00110-6, PubMed 9270085

Os I, Skjørten F, Svalander C, Berge E (1997)
Alpha-1-antitrypsin deficiency associated with hepatic cirrhosis and IgA nephritis
Nephron, 77 (2), 235-7
DOI 10.1159/000190278, PubMed 9346392

Publications 1995

Beckmann SL, Os I, Kjeldsen SE, Eide IK, Westheim AS, Hjermann I (1995)
Effect of dietary counselling on blood pressure and arterial plasma catecholamines in primary hypertension
Am J Hypertens, 8 (7), 704-11
DOI 10.1016/0895-7061(95)00122-6, PubMed 7546496

Berge E, Os I, Skjørten F, Svalander C (1995)
[Alpha 1-antitrypsin deficiency--not only pulmonary and hepatic involvement]
Tidsskr Nor Laegeforen, 115 (7), 823-6
PubMed 7701489

Guul SJ, Os I, Jounela AJ (1995)
The efficacy and tolerability of enalapril in a formulation with a very low dose of hydrochlorothiazide in hypertensive patients resistent to enalapril monotherapy
Am J Hypertens, 8 (7), 727-31
DOI 10.1016/0895-7061(95)00106-y, PubMed 7546499

Moan A, Høieggen A, Nordby G, Os I, Eide I, Kjeldsen SE (1995)
Mental stress increases glucose uptake during hyperinsulinemia: associations with sympathetic and cardiovascular responsiveness
Metabolism, 44 (10), 1303-7
DOI 10.1016/0026-0495(95)90034-9, PubMed 7476289

Moan A, Os I, Hjermann I, Kjeldsen SE (1995)
Hypertension therapy and risk of coronary heart disease: how do antihypertensives affect metabolic factors?
Cardiology, 86 (2), 89-93
DOI 10.1159/000176845, PubMed 7728812

Nordby G, Ekeberg O, Knardahl S, Os I (1995)
A double-blind study of psychosocial factors in 40-year-old women with essential hypertension
Psychother Psychosom, 63 (3-4), 142-50
DOI 10.1159/000288951, PubMed 7624458

Nordby G, Moan A, Kjeldsen SE, Eide IK, Os I (1995)
Insulin resistance and sympathetic nervous system activity in hypertensive and normotensive premenopausal women
Blood Press, 4 (5), 287-92
PubMed 8535550

Nordby G, Moan A, Kjeldsen SE, Os I (1995)
Relationship between hemorheological factors and insulin sensitivity in normotensive and hypertensive premenopausal women
Am J Hypertens, 8 (5 Pt 1), 439-44
DOI 10.1016/0895-7061(95)00044-P, PubMed 7662218

Os I (1995)
Non-responders
Wien Med Wochenschr, 145 (15-16), 357-60
PubMed 7502515

Os I (1995)
Risk factors and differential antihypertensive therapies
Acta Med Austriaca, 22 (3), 45-7
PubMed 8571750

Os I, Eide IK, Kjeldsen SE, Westheim AS, Stokke HP (1995)
[How to combine antihypertensive drugs?]
Tidsskr Nor Laegeforen, 115 (18), 2257-9
PubMed 7652723

Os I, Eide IK, Westheim AS, Kjeldsen SE (1995)
[Refractory hypertension]
Tidsskr Nor Laegeforen, 115 (6), 723-4
PubMed 7900136

Publications 1994

Gisholt K, Bratland B, Dahlöf B, Os I, Syvertsen JO, Tretli S (1994)
[Lisinopril and nifedipine have neutral effects on lipids]
Tidsskr Nor Laegeforen, 114 (29), 3433-5
PubMed 7998047

Kjeldsen SE, Westheim A, Eide I, Os I, Enger E (1994)
[Treatment of hypertension in 1994. Comments on the 1993 guidelines of the Norwegian Society of General Practitioners concerning the treatment program for hypertension]
Tidsskr Nor Laegeforen, 114 (17), 1990-2
PubMed 8079331

Moan A, Nordby G, Os I, Birkeland KI, Kjeldsen SE (1994)
Relationship between hemorrheologic factors and insulin sensitivity in healthy young men
Metabolism, 43 (4), 423-7
DOI 10.1016/0026-0495(94)90070-1, PubMed 8159097

Moan A, Os I, Hjermann I, Kjeldsen SE (1994)
[Antihypertensive treatment and risk of coronary disease. How significant is the antihypertensive effect for metabolic factors?]
Tidsskr Nor Laegeforen, 114 (4), 462-4
PubMed 8009486

Os I (1994)
Quality of life in hypertension
J Hum Hypertens, 8 Suppl 1, S27-30
PubMed 7807510

Os I, Bratland B, Dahlöf B, Gisholt K, Syvertsen JO, Tretli S (1994)
Female preponderance for lisinopril-induced cough in hypertension
Am J Hypertens, 7 (11), 1012-5
DOI 10.1093/ajh/7.11.1012, PubMed 7848615

Publications 1993

Kjeldsen SE, Moan A, Rostrup M, Nordby G, Os I, Eide I (1993)
[White coat hypertension and blood pressure measurement at home]
Tidsskr Nor Laegeforen, 113 (15), 1839-43
PubMed 8322321

Mundal HH, Nordby G, Lande K, Gjesdal K, Kjeldsen SE, Os I (1993)
Effect of cold pressor test and awareness of hypertension on platelet function in normotensive and hypertensive women
Scand J Clin Lab Invest, 53 (6), 585-91
DOI 10.3109/00365519309092557, PubMed 8266004

Os I (1993)
[Thiazides in the treatment of hypertension--friends or enemies?]
Tidsskr Nor Laegeforen, 113 (20), 2551-2
PubMed 8236170

Os I, Bratland B, Dahlöf B, Gisholt K, Syvertsen JO, Tretli S (1993)
Effect and tolerability of combining lovastatin with nifedipine or lisinopril
Am J Hypertens, 6 (8), 688-92
DOI 10.1093/ajh/6.8.688, PubMed 8217032

Os I, Kjeldsen SE, Nordby G, Eide I, Lande K, Hjermann I, Westheim A (1993)
Sex differences in essential hypertension
J Intern Med, 233 (1), 13-9
DOI 10.1111/j.1365-2796.1993.tb00641.x, PubMed 8429281

Os I, Nordby G, Lyngdal PT, Eide I (1993)
Plasma vasopressin, catecholamines and atrial natriuretic factor during hemodialysis and sequential ultrafiltration
Scand J Urol Nephrol, 27 (1), 93-9
DOI 10.3109/00365599309180422, PubMed 8493477

Os I, Thaulow E, Westheim A (1993)
Regional differences of atrial natriuretic factors in humans
Clin Physiol, 13 (2), 153-60
PubMed 8453869

Westheim A, Os I, Hjermann I (1993)
[Physical activity and the metabolic syndrome]
Tidsskr Nor Laegeforen, 113 (6), 723-4
PubMed 8465338

Publications 1992

Lie B, Os I, Bisgaard MB, Jacobsen D, Urdal P (1992)
[Rhabdomyolysis in self-induced poisoning. A prospective study]
Tidsskr Nor Laegeforen, 112 (18), 2359-61
PubMed 1412237

Moan A, Kjeldsen SE, Nordby G, Os I, Eide I, Enger E (1992)
[Treatment of hypertension in the elderly]
Tidsskr Nor Laegeforen, 112 (17), 2221-4
PubMed 1523663

Nordby G, Haaland A, Os I (1992)
Evidence of decreased fibrinolytic activity in hypertensive premenopausal women
Scand J Clin Lab Invest, 52 (4), 275-81
DOI 10.3109/00365519209088359, PubMed 1439514

Nordby G, Os I, Kjeldsen SE, Eide I (1992)
Mild essential hypertension in nonobese premenopausal women is characterized by low renin
Am J Hypertens, 5 (9), 579-84
DOI 10.1093/ajh/5.9.579, PubMed 1418846

Os I, Bratland B, Dahlöf B, Gisholt K, Syvertsen JO, Tretli S (1992)
[Cough during treatment with angiotensin-converting enzyme inhibitors is gender related]
Tidsskr Nor Laegeforen, 112 (27), 3429-31
PubMed 1334283

Os I, Bratland B, Dahlöf B, Gisholt K, Syvertsen JO, Tretli S (1992)
Female sex as an important determinant of lisinopril-induced cough
Lancet, 339 (8789), 372
DOI 10.1016/0140-6736(92)91694-4, PubMed 1346451

Os I, Nordby G (1992)
Hypertension and the metabolic cardiovascular syndrome: special reference to premenopausal women
J Cardiovasc Pharmacol, 20 Suppl 8, S15-21
PubMed 1283764

Syvertsen JO, Bratland B, Dahlöf B, Gisholt K, Os I, Tretli S (1992)
[Treatment with lisinopril or nifedipine in essential hypertension. A Norwegian multicenter study of the effect, tolerance and quality of life of 828 patients]
Tidsskr Nor Laegeforen, 112 (27), 3432-6
PubMed 1334284

Westheim A, Os I (1992)
Physical activity and the metabolic cardiovascular syndrome
J Cardiovasc Pharmacol, 20 Suppl 8, S49-53
PubMed 1283770

WESTHEIM A, OS I, THAULOW E, KJELDSEN SE, ERITSLAND J, EIDE IK (1992)
HEMODYNAMIC AND NEUROHUMORAL EFFECTS OF COLD PRESSOR TEST IN SEVERE HEART-FAILURE
Clin. Physiol., 12 (1), 95-106

Westheim A, Os I, Thaulow E, Kjeldsen SE, Eritsland J, Eide IK (1992)
Haemodynamic and neurohumoral effects of cold pressor test in severe heart failure
Clin Physiol, 12 (1), 95-106
PubMed 1541087

Publications 1991

Os I, Bratland B, Dahløf B, Gisholt K, Syvertsen JO, Tretli S (1991)
Lisinopril or nifedipine in essential hypertension? A Norwegian multicenter study on efficacy, tolerability and quality of life in 828 patients
J Hypertens, 9 (12), 1097-104
PubMed 1663965

Os I, Bratland B, Dahlöf B, Gisholt K, Syvertsen JO, Tretli S (1991)
Lisinopril and nifedipine in essential hypertension: a Norwegian multicenter study on efficacy, tolerability and quality of life in 828 patients
J Hypertens Suppl, 9 (6), S382-3
PubMed 1668011

Os I, Eide I, Kjeldsen SE, Westheim A, Nordby G (1991)
[Ambulatory non-invasive 24-hour blood pressure measurement--do we need it?]
Tidsskr Nor Laegeforen, 111 (18), 2280-2
PubMed 1896989

Os I, Hjermann I, Nordby G (1991)
[Hypertension as a part of metabolic cardiovascular syndrome]
Tidsskr Nor Laegeforen, 111 (25), 3062-4
PubMed 1948918

Publications 1990

Brunsvig PF, Os I, Frederichsen P (1990)
[Hyponatremia. A retrospective study of occurrence, etiology and mortality]
Tidsskr Nor Laegeforen, 110 (18), 2367-9
PubMed 2218994

Husebye E, Kjeldsen SE, Lande K, Gjesdal K, Os I, Eide I (1990)
Increased arterial adrenaline is related to pain in uncomplicated myocardial infarction
J Intern Med, 228 (6), 617-22
DOI 10.1111/j.1365-2796.1990.tb00288.x, PubMed 2149143

Os I, Enger E (1990)
[Symptomatic hyponatremia]
Tidsskr Nor Laegeforen, 110 (28), 3596-7
PubMed 2260053

WESTHEIM A, OS I, KJELDSEN SE, FONSTELIEN E, EIDE IK (1990)
RENAL HEMODYNAMIC AND SYMPATHETIC RESPONSES TO HEAD-UP TILT IN ESSENTIAL-HYPERTENSION
Scand. J. Clin. Lab. Invest., 50 (8), 815-822

Westheim A, Os I, Kjeldsen SE, Fønstelien E, Eide IK (1990)
Renal haemodynamic and sympathetic responses to head-up tilt in essential hypertension
Scand J Clin Lab Invest, 50 (8), 815-22
PubMed 2084819

Publications 1989

Lande K, Os I, Kjeldsen SE, Westheim A, Hjermann I, Eide I, Gjesdal K (1989)
Effect of dopamine and dopamine-antagonist infusion on blood platelet count, size and release reaction in hypertensive and normotensive subjects
Scand J Clin Lab Invest, 49 (4), 307-15
DOI 10.3109/00365518909089102, PubMed 2525805

Os I, Jacobsen D, Enger E, Lie B (1989)
[Forced alkalic diuresis. Still a current therapy in poisoning]
Tidsskr Nor Laegeforen, 109 (22), 2154-5
PubMed 2549656

Os I, Lyngdal PT (1989)
General convulsions and rhabdomyolysis. Case reports
Acta Neurol Scand, 79 (3), 246-8
DOI 10.1111/j.1600-0404.1989.tb03746.x, PubMed 2497620

Publications 1988

Beckmann SL, Os I, Kjeldsen SE, Mogensen B, Norum KR, Hjermann I (1988)
[Non-pharmacological treatment of mild to moderate hypertension. A randomized, controlled study--results 1 1/2 years later]
Tidsskr Nor Laegeforen, 108 (22), 1593-7
PubMed 3046045

Kjeldsen SE, Os I, Westheim A, Frederichsen P, Hjermann I, Eide IK, Gautvik K (1988)
Decreased serum phosphate in essential hypertension. Related to increased sympathetic tone
Am J Hypertens, 1 (4 Pt 1), 403-9
DOI 10.1093/ajh/1.4.403, PubMed 3214562

Kjeldsen SE, Os I, Westheim A, Lande K, Gjesdal K, Hjermann I, Eide I (1988)
Hyper-responsiveness to low-dose epinephrine infusion in mild essential hypertension
J Hypertens Suppl, 6 (4), S581-3
DOI 10.1097/00004872-198812040-00182, PubMed 3241257

Lande K, Kjeldsen SE, Os I, Westheim A, Hjermann I, Eide I, Gjesdal K (1988)
Increased platelet and vascular smooth muscle reactivity to low-dose adrenaline infusion in mild essential hypertension
J Hypertens, 6 (3), 219-25
DOI 10.1097/00004872-198803000-00006, PubMed 2966193

Os I, Lyngdal PT (1988)
[Rhabdomyolysis and acute kidney failure]
Tidsskr Nor Laegeforen, 108 (5), 390-2
PubMed 3353933

Publications 1987

Knudtzon J, Haneberg B, Os I (1987)
[Antidiuretic hormone in children. Defects in osmoregulation and secretion]
Tidsskr Nor Laegeforen, 107 (29), 2549-52
PubMed 3445253

Lande K, Os I, Kjeldsen SE, Westheim A, Hjermann I, Eide I, Gjesdal K (1987)
Increased platelet size and release reaction in essential hypertension
J Hypertens, 5 (4), 401-6
PubMed 2959720

Os I, Kjeldsen SE, Beckmann SL, Eide I, Hjermann I, Leren P, Westheim A (1987)
[Sodium restriction in hypertension. Sympathetic tonus, renin and vasopressin]
Tidsskr Nor Laegeforen, 107 (10-11), 954-7
PubMed 3299859

Os I, Kjeldsen SE, Westheim A, Akesson I, Eide I, Skjøtø J, Hjermann I, Leren P (1987)
Aging and urinary vasopressin excretion in healthy men
Scand J Urol Nephrol, 21 (3), 235-9
DOI 10.3109/00365598709180328, PubMed 3433025

Os I, Kjeldsen SE, Westheim A, Lande K, Norman N, Hjermann I, Eide I (1987)
Endocrine and haemodynamic responses to graded dopamine infusion in essential hypertension
Scand J Clin Lab Invest, 47 (4), 371-7
PubMed 3602915

Os I, Kjeldsen SE, Westheim A, Aakesson I, Norman N, Enger E, Hjermann I, Eide I (1987)
Decreased central dopaminergic activity in essential hypertension
J Hypertens, 5 (2), 191-7
DOI 10.1097/00004872-198704000-00010, PubMed 3611768

Publications 1986

Kjeldsen SE, Eide I, Os I, Westheim A, Aakesson I, Børre Mogensen S, Frederichsen P, Hjermann I, Gautvik K (1986)
Serum phosphate and sympathetic tone in mild essential hypertension
Acta Med Scand Suppl, 714, 119-23
PubMed 3472434

KJELDSEN SE, EIDE I, OS I, WESTHEIM A, AAKESSON I, MOGENSEN SB, FREDERICHSEN P, HJERMANN I, GAUTVIK K (1986)
SERUM PHOSPHATE AND SYMPATHETIC TONE IN MILD ESSENTIAL-HYPERTENSION
Acta Med. Scand. (714), 119-123

KJELDSEN SE, OS I, BECKMANN SL, WESTHEIM A, HJERMANN I, LEREN P, EIDE I (1986)
DECREASED NORADRENERGIC SYMPATHETIC TONE DURING CONTROLLED LONG-TERM LOW SODIUM TREATMENT OF MILD ESSENTIAL-HYPERTENSION
J. Hypertens., 4 6, S200-S202

LANDE K, OS I, KJELDSEN SE, WESTHEIM A, HJERMANN I, EIDE I, GJESDAL K (1986)
BLOOD-PLATELET SIZE, PLATELET-RELEASE REACTION AND RESPONSE TO INFUSED ADRENALINE ARE INCREASED IN MILD ESSENTIAL-HYPERTENSION
J. Hypertens., 4 6, S234-S236

Lande K, Os I, Kjeldsen SE, Westheim A, Aakesson I, Hjermann I, Eide I, Gjesdal K (1986)
Platelet volume, platelet release reaction and platelet response to infused adrenaline are increased in essential hypertension
Acta Med Scand Suppl, 714, 129-32
PubMed 2953174

LANDE K, OS I, KJELDSEN SE, WESTHEIM A, AAKESSON I, HJERMANN I, EIDE I, GJESDAL K (1986)
PLATELET VOLUME - PLATELET-RELEASE REACTION AND PLATELET RESPONSE TO INFUSED ADRENALINE ARE INCREASED IN ESSENTIAL-HYPERTENSION
Acta Med. Scand. (714), 129-132

Os I, Kjeldsen SE, Skjøtø J, Westheim A, Lande K, Aakesson I, Frederichsen P, Leren P, Hjermann I, Eide IK (1986)
Increased plasma vasopressin in low renin essential hypertension
Hypertension, 8 (6), 506-13
DOI 10.1161/01.HYP.8.6.506, PubMed 2872161

Os I, Kjeldsen SE, Westheim A, Jackson MB, Akesson I, Frederichsen P, Eide I, Leren P (1986)
The effect of sodium depletion and potassium supplementation on vasopressin, renin and catecholamines in hypertensive men
Acta Med Scand, 220 (3), 195-203
PubMed 3535395

OS I, KJELDSEN SE, WESTHEIM A, JACKSON MB, AAKESSON I, FREDERICHSEN P, LEREN P, EIDE I (1986)
HORMONAL RESPONSES TO TREATMENT OF HIGH BLOOD-PRESSURE WITH LOW-SALT DIET ALONE AND COMBINED WITH ADDED POTASSIUM
Acta Med. Scand. (714), 93-97

Os I, Kjeldsen SE, Westheim A, Jackson MB, Aakesson I, Frederichsen P, Leren P, Eide I (1986)
Hormonal responses to treatment of high blood pressure with low-salt diet alone and combined with added potassium
Acta Med Scand Suppl, 714, 93-7
PubMed 3554904

OS I, KJELDSEN SE, WESTHEIM A, NORMANN N, AAKESSON I, HJERMANN I, EIDE I (1986)
CENTRAL DOPAMINERGIC CONTROL OF PROLACTIN IN ESSENTIAL-HYPERTENSION
Acta Med. Scand. (714), 113-117

Os I, Kjeldsen SE, Westheim A, Normann N, Aakesson I, Hjermann I, Eide I (1986)
Central dopaminergic control of prolactin in essential hypertension
Acta Med Scand Suppl, 714, 113-7
PubMed 3472433

Publications 1985

Kjeldsen SE, Os I, Forsberg G, Aakesson I, Skjøtø J, Frederichsen P, Fønstelien E, Eide I (1985)
Dietary sodium intake increases vasopressin secretion in man
J Clin Hypertens, 1 (2), 123-31
PubMed 3915319

Lande K, Gjesdal K, Os I, Kjeldsen SE, Eide I, Westheim A, Hjermann I (1985)
Does arterial rather than venous plasma beta-thromboglobulin better reflect in vivo platelet release reaction?
Thromb Haemost, 54 (2), 547
PubMed 2417355

Os I, Akesson I, Enger E, Larsen IF (1985)
[Polyuria and hereditary central diabetes insipidus]
Tidsskr Nor Laegeforen, 105 (33), 2374-7
PubMed 4082152

Os I, Kjeldsen SE, Aakesson I, Skjøtø J, Eide I, Hjermann I, Leren P (1985)
Evidence of age-related variation in plasma vasopressin of normotensive men
Scand J Clin Lab Invest, 45 (3), 263-8
DOI 10.3109/00365518509161004, PubMed 3890133

Os I, Aakesson I, Enger E (1985)
Plasma vasopressin in hereditary cranial diabetes insipidus
Acta Med Scand, 217 (4), 429-34
PubMed 4013833

Publications 1984

Kjeldsen SE, Forsberg G, Eide I, Aakesson I, Os I, Skjøtø J, Frederichsen P (1984)
Dietary sodium intake and vasopressin excretion in man
J Hypertens Suppl, 2 (3), S301-3
PubMed 6599675

Os I, Kjeldsen SE, Aakesson I, Skjøtø J, Westheim A, Eide I, Leren P (1984)
Arteriovenous difference of plasma vasopressin in normal man and effect of posture
Acta Physiol Scand, 122 (1), 49-53
DOI 10.1111/j.1748-1716.1984.tb07480.x, PubMed 6239521

Skjøtø J, Aakesson I, Os I, Kjeldsen SE, Eide I, Leren P (1984)
Increased plasma vasopressin and serum uric acid in the low renin type of essential hypertension
Acta Med Scand, 215 (2), 165-72
PubMed 6367368

Publications 1982

Os I (1982)
[Cytur-Test in pyuria]
Tidsskr Nor Laegeforen, 102 (7), 422-3
PubMed 7157302

Publications 1978

Os I (1978)
[Cytomegalovirus mononucleosis]
Tidsskr Nor Laegeforen, 98 (27), 1316-7
PubMed 211673