Publications 2025

Bekkelund M, Juul FE, Sandstad O, Valeur J (2025)
[Not Available]
Tidsskr Nor Laegeforen, 145 (2)
DOI 10.4045/tidsskr.24.0655, PubMed 39932094

Publications 2023

Evensen H, Sandstad O, Larssen L, Hagen M, Kristensen VA, Søvik TT, Schulz A, Hauge T, Medhus AW (2023)
Intraoperative distensibility measurement in POEM for achalasia: impact on patient outcome and associations with other outcome variables at 1-year follow-up
Surg Endosc, 37 (12), 9283-9290
DOI 10.1007/s00464-023-10494-z, PubMed 37880446

Publications 2022

Evensen H, Hjermstad MJ, Cvancarova M, Kristensen V, Larssen L, Skattum J, Hauge T, Sandstad O, Medhus AW (2022)
Quality of life in patients with achalasia: Associations with Eckardt score and objective treatment outcomes after peroral endoscopic myotomy
Endosc Int Open, 10 (12), E1570-E1576
DOI 10.1055/a-1968-7682, PubMed 36531682

Publications 2021

Evensen H, Småstuen MC, Schulz A, Kristensen V, Larssen L, Skattum J, Sandstad O, Hauge T, Medhus AW (2021)
One year comprehensive prospective follow-up of achalasia patients after peroral endoscopic myotomy
Ann Med, 53 (1), 2225-2233
DOI 10.1080/07853890.2021.2005253, PubMed 34806501

Publications 2019

Evensen H, Kristensen V, Larssen L, Sandstad O, Hauge T, Medhus AW (2019)
Outcome of peroral endoscopic myotomy (POEM) in treatment-naive patients. A systematic review
Scand J Gastroenterol, 54 (1), 1-7
DOI 10.1080/00365521.2018.1549271, PubMed 30650313

Publications 2014

Hauge T, Johnson E, Sandstad O, Johannessen HO, Trondsen E (2014)
Surgical treatment of epiphrenic oesophageal diverticulum
Tidsskr Nor Laegeforen, 134 (10), 1047-50
DOI 10.4045/tidsskr.13.1336, PubMed 24865729

Publications 2013

Hope H, Skar V, Sandstad O, Husebye E, Medhus AW (2013)
Correction to: Small intestinal malabsorption in chronic alcoholism: a retrospective study of alcoholic patients by the ¹⁴C-D-xylose breath test
Scand J Gastroenterol, 48 (10), 1231-1232
DOI 10.3109/00365521.2013.825316, PubMed 28078905

Publications 2012

Hope H, Skar V, Sandstad O, Husebye E, Medhus AW (2012)
Small intestinal malabsorption in chronic alcoholism: a retrospective study of alcoholic patients by the ¹⁴C-D-xylose breath test
Scand J Gastroenterol, 47 (4), 428-34
DOI 10.3109/00365521.2011.648951, PubMed 22229732

Publications 2011

Hope HB, Medhus AW, Sandstad O, Borge CR, Skar V (2011)
Reduced ¹³C-D-xylose absorption in alcoholics is more likely caused by alterations in small intestinal mucosa than delayed gastric emptying
Scand J Gastroenterol, 46 (4), 414-9
DOI 10.3109/00365521.2010.536252, PubMed 21275757

Publications 2010

Sandstad O, Jacobsen D (2010)
Metodebok for leger
Oslo universitetssykehus, Ullevål, [Oslo] (13. utg.), 238 s.
BIBSYS 102417407, ISBN 978-82-473-0023-7

Publications 2008

Sandstad O (2008)
Gastroenterologiske rutiner ved Ullevål universitetssykehus
Ullevål universitetssykehus, [Oslo (8. utg.), vi, 204 s.
BIBSYS 10162851x, ISBN 978-82-473-0020-6

Sandstad O, Jacobsen D (2008)
Metodebok for leger
Ullevål universitetssykehus, [Oslo] (12. utg.), 240 s.
BIBSYS 100095372, ISBN 978-82-473-0021-3

Urdal P, Sandstad O, Løberg EM, Haug KB (2008)
[Useful genetic test for lactase deficiency]
Tidsskr Nor Laegeforen, 128 (5), 593
PubMed 18311211

Publications 2006

Sandstad O, Jacobsen D (2006)
Metodebok for leger
Ullevål universitetssykehus, [Oslo] (Utg. 11), 240 s.
BIBSYS 061124419, ISBN 82-993145-3-4

Publications 2004

Sandstad O (2004)
Gastroenterologiske rutiner ved Ullevål universitetssykehus m/ tumor mammae og thyreoidealidelser
Sykehuset, Oslo (utg. 7b), VI, 221 s.
BIBSYS 040893855, ISBN 82-473-0004-4

Publications 2003

Sandstad O (2003)
Common bile duct stones: pathogenesis of brown pigment calculi
In Series of dissertations submitted to the Faculty of Medicine, University of Oslo, Unipub, Oslo, no. 128, 1 b. (flere pag.)
BIBSYS 031874118, ISBN 82-8080-049-2

Publications 2002

Sandstad O, Jacobsen D (2002)
Metodebok for leger
Medisinsk klinikk, Hjerte-lungesenteret, Ullevål Universitetssykehus, Oslo (9. utg.), 220 s.
BIBSYS 021432090, ISBN 82-993145-1-8

Sandstad O, Osnes T, Skar V (2002)
D-glucaric acid in common duct bile and relation to choledocholithiasis
Scand J Gastroenterol, 37 (4), 488-92
DOI 10.1080/003655202317316141, PubMed 11989842

Publications 2000

Medhus AW, Sandstad O, Bredesen J, Husebye E (2000)
Stimulation of the small intestine by nutrients in relation to phase of the migrating motor complex
Scand J Gastroenterol, 35 (5), 494-500
DOI 10.1080/003655200750023750, PubMed 10868452

Sandstad O, Osnes T, Skar V, Urdal P, Osnes M (2000)
Structure and composition of common bile duct stones in relation to duodenal diverticula, gastric resection, cholecystectomy and infection
Digestion, 61 (3), 181-8
DOI 10.1159/000007755, PubMed 10773723

Sandstad O, Osnes T, Urdal P, Skar V, Osnes M (2000)
Brown pigment stones in the common bile duct: reduced bilirubinate diconjugate in bile
Scand J Gastroenterol, 35 (2), 198-203
DOI 10.1080/003655200750024399, PubMed 10720120

Publications 1999

Medhus AW, Sandstad O, Bredesen J, Husebye E (1999)
Delay of gastric emptying by duodenal intubation: sensitive measurement of gastric emptying by the paracetamol absorption test
Aliment Pharmacol Ther, 13 (5), 609-20
DOI 10.1046/j.1365-2036.1999.00519.x, PubMed 10233184

Medhus AW, Sandstad O, Näslund E, Hellström PM, Husebye E (1999)
The influence of the migrating motor complex on the postprandial endocrine response
Scand J Gastroenterol, 34 (10), 1012-8
DOI 10.1080/003655299750025129, PubMed 10563672

Publications 1998

Aabakken L, Holthe B, Sandstad O, Rosseland A, Osnes M (1998)
Endoscopic pancreaticobiliary procedures in patients with a Billroth II resection: a 10-year follow-up study
Ital J Gastroenterol Hepatol, 30 (3), 301-5
PubMed 9759601

Publications 1997

Osnes T, Sandstad O, Skar V, Osnes M (1997)
beta-Glucuronidase in common duct bile, methodological aspects, variation of pH optima and relation to gallstones
Scand J Clin Lab Invest, 57 (4), 307-15
DOI 10.3109/00365519709099404, PubMed 9249878

Osnes T, Sandstad O, Skar V, Osnes M (1997)
Lipopolysaccharides and beta-glucuronidase activity in choledochal bile in relation to choledocholithiasis
Digestion, 58 (5), 437-43
DOI 10.1159/000201480, PubMed 9383634

Publications 1995

Medhus A, Sandstad O, Bredesen J, Husebye E (1995)
The migrating motor complex modulates intestinal motility response and rate of gastric emptying of caloric meals
Neurogastroenterol Motil, 7 (1), 1-8
DOI 10.1111/j.1365-2982.1995.tb00202.x, PubMed 7627861

Sandstad O (1995)
[When should patients be admitted to hospital?]
Tidsskr Nor Laegeforen, 115 (11), 1435
PubMed 7770846

Solberg EE, Aabakken L, Sandstad O, Bach-Gansmo E, Nordby G, Enger E, Stene-Larsen G (1995)
[The medical record--content, interpretation and quality. Study of 100 medical records from a department of internal medicine]
Tidsskr Nor Laegeforen, 115 (4), 488-9
PubMed 7871509

Aabakken L, Sandstad O, Bach-Gansmo E, Nordby G, Solberg EE, Enger E, Stene-Larsen G (1995)
[Time utilization in the preparation of medical records]
Tidsskr Nor Laegeforen, 115 (4), 486-7
PubMed 7871508

Publications 1994

Sandstad O, Osnes T, Skar V, Urdal P, Osnes M (1994)
Common bile duct stones are mainly brown and associated with duodenal diverticula
Gut, 35 (10), 1464-7
DOI 10.1136/gut.35.10.1464, PubMed 7959206

Publications 1993

Osnes T, Sandstad O, Skar V, Osnes M, Kierulf P (1993)
Total protein in common duct bile measured by acetonitrile precipitation and a micro bicinchoninic acid (BCA) method
Scand J Clin Lab Invest, 53 (7), 757-63
DOI 10.3109/00365519309092582, PubMed 8272764

Sandstad O, Osnes T, Skar V, Osnes M (1993)
Urinary D-glucaric acid, a marker substance for microsomal enzyme induction. Methodological aspects, responses to alcohol and findings in workers exposed to toluene
Scand J Clin Lab Invest, 53 (4), 327-33
DOI 10.3109/00365519309086623, PubMed 8378735

Publications 1992

Sandstad O, Aabakken L, Enger E (1992)
[Decision to withdraw cardiopulmonary resuscitation at Norwegian hospitals]
Tidsskr Nor Laegeforen, 112 (13), 1690-2
PubMed 1509424

Aabakken L, Sandstad O, Enger E (1992)
[Use of the R-concept in a medical department]
Tidsskr Nor Laegeforen, 112 (13), 1693-5
PubMed 1509425