Publications 2024

Antonsen LP, Espinoza A, Halvorsen PS, Schalit I, Bergan H, Lilja D, Landsverk SA (2024)
The impact of hypovolemia and PEEP on recirculation in venovenous ECMO: an experimental porcine model
Intensive Care Med Exp, 12 (1), 51
DOI 10.1186/s40635-024-00636-5, PubMed 38822111

Publications 2023

Lilja D, Schalit I, Espinoza A, Fiane AE, Dahle G, Littorin-Sandbu H, Pettersen FJ, Russell KE, Thiara APS, Elle OJ, Halvorsen PS (2023)
Detection of inflow obstruction in left ventricular assist devices by accelerometer: A porcine model study
J Heart Lung Transplant, 42 (8), 1005-1014
DOI 10.1016/j.healun.2023.03.017, PubMed 37023840

Lilja D, Schalit I, Espinoza A, Hoel TN, Larsen G, Pettersen FJ, Halvorsen PS (2023)
Extracorporeal driveline vibrations to detect left ventricular assist device thrombosis - A porcine model study
J Heart Lung Transplant, 43 (1), 111-119
DOI 10.1016/j.healun.2023.08.022, PubMed 37673384

Publications 2022

Lilja D, Schalit I, Espinoza A, Pettersen FJ, Elle OJ, Halvorsen PS (2022)
Detection of inflow obstruction in left ventricular assist devices by accelerometer: An in vitro study
Med Eng Phys, 110, 103917
DOI 10.1016/j.medengphy.2022.103917, PubMed 36564132

Schalit I, Espinoza A, Pettersen FJ, Skulstad H, Fosse E, Fiane AE, Halvorsen PS (2022)
Improved Detection Of Thromboembolic Complications In Left Ventricular Assist Device By Novel Accelerometer-Based Analysis
ASAIO J, 68 (9), 1117-1125
DOI 10.1097/MAT.0000000000001654, PubMed 36066353

Wajdan A, Jahren TS, Villegas-Martinez M, Khan FH, Halvorsen PS, Odland HH, Elle OJ, Solberg AHS, Remme EW (2022)
Automatic Detection of Aortic Valve Events Using Deep Neural Networks on Cardiac Signals From Epicardially Placed Accelerometer
IEEE J Biomed Health Inform, 26 (9), 4450-4461
DOI 10.1109/JBHI.2022.3181148, PubMed 35679388

Wisløff-Aase K, Skulstad H, Beitnes JO, Lundblad R, Halvorsen PS, Fiane A, Espinoza A (2022)
Left Ventricular Function Changes Induced by Moderate Hypothermia Are Rapidly Reversed After Rewarming-A Clinical Study
Crit Care Med, 50 (1), e52-e60
DOI 10.1097/CCM.0000000000005170, PubMed 34259452

Wisløff-Aase K, Skulstad H, Haugaa K, Lingaas PS, Beitnes JO, Halvorsen PS, Espinoza A (2022)
Myocardial electrophysiological and mechanical changes caused by moderate hypothermia-A clinical study
Physiol Rep, 10 (8), e15259
DOI 10.14814/phy2.15259, PubMed 35439365

Publications 2021

Krogh MR, Halvorsen PS, Grymyr OHN, Bergsland J, Elle OJ, Fosse E, Remme EW (2021)
Continuous Estimation of Acute Changes in Preload Using Epicardially Attached Accelerometers
IEEE Trans Biomed Eng, 68 (7), 2067-2075
DOI 10.1109/TBME.2020.3020358, PubMed 32866091

Storm BS, Halvorsen PS, Skulstad H, Dybwik K, Schjalm C, Christiansen D, Wisløff-Aase K, Fosse E, Braaten T, Nielsen EW, Mollnes TE (2021)
Open chest and pericardium facilitate transpulmonary passage of venous air emboli
Acta Anaesthesiol Scand, 65 (5), 648-655
DOI 10.1111/aas.13796, PubMed 33595102

Publications 2020

El-Ganainy NO, Balasingham I, Halvorsen PS, Rosseland LA (2020)
A New Real Time Clinical Decision Support System Using Machine Learning for Critical Care Units
IEEE Access, 8, 185676-185687
DOI 10.1109/ACCESS.2020.3030031

Espinoza A, Kerans V, Bugge JF, Skulstad H, Halvorsen PS (2020)
Left Ventricular Function During Epinephrine Stimulation and Hypothermia: Effects at Spontaneous and Paced Heart Rates in a Porcine Model
Ther Hypothermia Temp Manag, 11 (1), 35-44
DOI 10.1089/ther.2019.0035, PubMed 31916922

Saevik M, Beitnes JO, Aaberge L, Halvorsen PS (2020)
Safety and feasibility of dobutamine stress echocardiography in symptomatic high gradient aortic stenosis patients scheduled for transcatheter aortic valve implantation
J Clin Ultrasound, 49 (1), 38-48
DOI 10.1002/jcu.22915, PubMed 32914454

Schalit I, Espinoza A, Pettersen FJ, Snartland S, Ringdal ML, Hoel TN, Skulstad H, Fosse E, Fiane AE, Halvorsen PS (2020)
Detection of Thromboembolic Events and Pump Thrombosis in HeartWare HVAD Using Accelerometer in a Porcine Model
ASAIO J, 66 (1), 38-48
DOI 10.1097/MAT.0000000000000954, PubMed 30688692

Wajdan A, Krogh MR, Villegas-Martinez M, Halvorsen PS, Elle OJ, Remme EW (2020)
Automatic detection of valve events by epicardial accelerometer allows estimation of the left ventricular pressure trace and pressure-displacement loop area
Sci Rep, 10 (1), 20088
DOI 10.1038/s41598-020-76637-7, PubMed 33208784

Wisløff-Aase K, Kerans V, Haugaa K, Halvorsen PS, Skulstad H, Espinoza A (2020)
Changes in left ventricular electromechanical relations during targeted hypothermia
Intensive Care Med Exp, 8 (1), 76
DOI 10.1186/s40635-020-00363-7, PubMed 33315166

Publications 2019

Albatat M, Bergsland J, Arevalo H, Odland HH, Bose P, Halvorsen PS, Balasingham I (2019)
Technological and Clinical Challenges in Lead Placement for Cardiac Rhythm Management Devices
Ann Biomed Eng, 48 (1), 26-46
DOI 10.1007/s10439-019-02376-0, PubMed 31576502

Carling U, Barkhatov L, Reims HM, Storås T, Courivaud F, Kazaryan AM, Halvorsen PS, Dorenberg E, Edwin B, Hol PK (2019)
Can we ablate liver lesions close to large portal and hepatic veins with MR-guided HIFU? An experimental study in a porcine model
Eur Radiol, 29 (9), 5013-5021
DOI 10.1007/s00330-018-5996-8, PubMed 30737565

Dahle G, Helle-Valle T, Beitnes JO, Espinoza A, Halvorsen PS, Rein KA (2019)
Single-centre first experience with transapical transcatheter mitral valve replacement with an apical tether: factors influencing screening outcomes
Interact Cardiovasc Thorac Surg, 28 (5), 695-703
DOI 10.1093/icvts/ivy343, PubMed 30602024

El-Ganainy NO, Balasingham I, Halvorsen PS, Rosseland LA (2019)
On the Performance of Hierarchical Temporal Memory Predictions of Medical Streams in Real Time
INT SYM MED INFORM, 157-162

Karlsen H, Bergan HA, Halvorsen PS, Sunde K, Qvigstad E, Andersen GØ, Bugge JF, Olasveengen TM (2019)
Esmolol for cardioprotection during resuscitation with adrenaline in an ischaemic porcine cardiac arrest model
Intensive Care Med Exp, 7 (1), 65
DOI 10.1186/s40635-019-0279-5, PubMed 31802327

Krogh MR, Halvorsen PS, Elle OJ, Bergsland J, Remme EW (2019)
Dynamic gravity compensation does not increase detection of myocardial ischemia in combined accelerometer and gyro sensor measurements
Sci Rep, 9 (1), 2671
DOI 10.1038/s41598-018-35630-x, PubMed 30804438

Lu PF, Veletic M, Laasmaa M, Vendelin M, Louch WE, Halvorsen PS, Bergsland J, Balasingham I (2019)
Multi-nodal nano-actuator pacemaker for energy-efficient stimulation of cardiomyocytes
Nano Commun.Netw., 22, 100270
DOI 10.1016/j.nancom.2019.100270

Pischke SE, Hestenes S, Johansen HT, Fure H, Bugge JF, Espinoza A, Skulstad H, Edvardsen T, Fosse E, Mollnes TE, Halvorsen PS, Nielsen EW (2019)
Sepsis causes right ventricular myocardial inflammation independent of pulmonary hypertension in a porcine sepsis model
PLoS One, 14 (6), e0218624
DOI 10.1371/journal.pone.0218624, PubMed 31247004

Wajdan A, Krogh MR, Villegas-Martinez M, Halvorsen PS, Grymyr OJ, Elle OJ, Remme EW (2019)
Monitoring cardiac function by accelerometer - detecting start systole from the acceleration signal makes additional ECG recordings for R-peak detection redundant
Annu Int Conf IEEE Eng Med Biol Soc, 2019, 4922-4925
DOI 10.1109/EMBC.2019.8856417, PubMed 31946964

Wajdan A, Krogh MR, Villegas-Martinez M, Halvorsen PS, Grymyr OJ, Elle OJ, Remme EW (2019)
Monitoring cardiac function by accelerometer - detecting start systole from the acceleration signal makes additional ECG recordings for R-peak detection redundant
IEEE ENG MED BIO, 4922-4925

Publications 2018

Bergan HA, Halvorsen PS, Espinoza A, Kerans V, Skulstad H, Fosse E, Bugge JF (2018)
Left Ventricle Function During Therapeutic Hypothermia with Beta₁-Adrenergic Receptor Blockade
Ther Hypothermia Temp Manag, 8 (3), 156-164
DOI 10.1089/ther.2017.0051, PubMed 29394143

Bugge JF, Kerans V, Nyrerød HC, Halvorsen PS (2018)
Haemodynamic evaluation and optimisation of brain-dead donors with oesophageal Doppler during organ harvesting: A feasibility study
Eur J Anaesthesiol, 35 (11), 893-895
DOI 10.1097/EJA.0000000000000876, PubMed 30278032

Hyler S, Espinoza A, Skulstad H, Fosse E, Steinar Halvorsen P (2018)
Corrigendum to 'Left ventricular function can be continuously monitored with an epicardially attached accelerometer sensor' [Eur J Cardiothorac Surg 2014;46:313-20]
Eur J Cardiothorac Surg, 54 (5), 968
DOI 10.1093/ejcts/ezy340, PubMed 30295773

Schalit I, Espinoza A, Pettersen FJ, Thiara APS, Karlsen H, Sørensen G, Fosse E, Fiane AE, Halvorsen PS (2018)
Accelerometer Detects Pump Thrombosis and Thromboembolic Events in an In vitro HVAD Circuit
ASAIO J, 64 (5), 601-609
DOI 10.1097/MAT.0000000000000699, PubMed 29088023

Publications 2017

Fiane KKH, Dahle G, Bendz B, Halvorsen PS, Abdelnoor M, Mollnes TE, Fosse E (2017)
Reduced inflammatory response by transcatheter, as compared to surgical aortic valve replacement
Scand Cardiovasc J, 52 (1), 43-50
DOI 10.1080/14017431.2017.1416157, PubMed 29233022

Grymyr OH, Beitnes JO, Eidet J, Tølløfsrud S, Fiane A, Skulstad H, Fosse E, Halvorsen PS (2017)
Detection of intraoperative myocardial dysfunction by accelerometer during aortic valve replacement
Interact Cardiovasc Thorac Surg, 24 (2), 188-195
DOI 10.1093/icvts/ivw326, PubMed 28364479

Høiseth G, Gottås A, Berg T, Arnestad M, Halvorsen PS, Bachs LC (2017)
Urinary Kinetics of Heroin Metabolites in Pigs Shortly After Intake
J Anal Toxicol, 41 (5), 451-454
DOI 10.1093/jat/bkx017, PubMed 28335030

Krogh MR, Nghiem GM, Halvorsen PS, Elle OJ, Grymyr OJ, Hoff L, Remme EW (2017)
Gravity Compensation Method for Combined Accelerometer and Gyro Sensors Used in Cardiac Motion Measurements
Ann Biomed Eng, 45 (5), 1292-1304
DOI 10.1007/s10439-017-1798-4, PubMed 28116541

Publications 2016

Bergan HA, Halvorsen PS, Skulstad H, Fosse E, Bugge JF (2016)
Does therapeutic hypothermia during extracorporeal cardiopulmonary resuscitation preserve cardiac function?
J Transl Med, 14 (1), 345
DOI 10.1186/s12967-016-1099-y, PubMed 27998282

Bugge JF, Espinoza A, Halvorsen PS (2016)
Hypothermia Is Not an Inotropic Drug
Crit Care Med, 44 (12), e1258
DOI 10.1097/CCM.0000000000002048, PubMed 27858830

Eidet J, Dahle G, Bugge JF, Bendz B, Rein KA, Aaberge L, Offstad JT, Fosse E, Aakhus S, Halvorsen PS (2016)
Long-term outcomes after transcatheter aortic valve implantation: the impact of intraoperative tissue Doppler echocardiography
Interact Cardiovasc Thorac Surg, 23 (3), 403-9
DOI 10.1093/icvts/ivw159, PubMed 27241050

Gottås A, Arnestad M, Halvorsen PS, Bachs LC, Høiseth G (2016)
Pharmacokinetics of heroin and its metabolites in vitreous humor and blood in a living pig model
Forensic Toxicol, 34 (2), 277-285
DOI 10.1007/s11419-016-0315-z, PubMed 27660664

Secerbegovic A, Bergsland J, Halvorsen PS, Suljanovic N, Mujcic A, Balasingham I (2016)
BLOOD PRESSURE ESTIMATION USING VIDEO PLETHYSMOGRAPHY
I S BIOMED IMAGING, 461-464
DOI 10.1109/ISBI.2016.7493307

Tjulkins F, Nguyen ATT, Andreassen E, Hoff L, Grymyr OJ, Halvorsen PS, Imenes K (2016)
An Implantable Accelerometer-Based Heart-Monitoring Device With Improved Positional Stability
J. Med. Devices, 10 (4), 045002
DOI 10.1115/1.4034574

Publications 2015

Bergan HA, Halvorsen PS, Skulstad H, Edvardsen T, Fosse E, Bugge JF (2015)
Successful ECMO-cardiopulmonary resuscitation with the associated post-arrest cardiac dysfunction as demonstrated by MRI
Intensive Care Med Exp, 3 (1), 61
DOI 10.1186/s40635-015-0061-2, PubMed 26335546

Eidet J, Dahle G, Bugge JF, Bendz B, Rein KA, Fosse E, Aakhus S, Halvorsen PS (2015)
Transcatheter aortic valve implantation and intraoperative left ventricular function: a myocardial tissue Doppler imaging study
J Cardiothorac Vasc Anesth, 29 (1), 115-20
DOI 10.1053/j.jvca.2014.10.016, PubMed 25620143

Eidet J, Dahle G, Bugge JF, Bendz B, Rein KA, Aaberge L, Offstad JT, Fosse E, Aakhus S, Halvorsen PS (2015)
Intraoperative improvement in left ventricular peak systolic velocity predicts better short-term outcome after transcatheter aortic valve implantation
Interact Cardiovasc Thorac Surg, 22 (1), 5-12
DOI 10.1093/icvts/ivv277, PubMed 26467639

Espinoza A, Neumann K, Halvorsen PS, Sundset A, Kongerud J, Fosse E (2015)
Critical airway obstruction: challenges in airway management and ventilation during therapeutic bronchoscopy
J Bronchology Interv Pulmonol, 22 (1), 41-7
DOI 10.1097/LBR.0000000000000127, PubMed 25590482

Floor PA, Chávez-Santiago R, Brovoll S, Aardal Ø, Bergsland J, Grymyr OJ, Halvorsen PS, Palomar R, Plettemeier D, Hamran SE, Ramstad TA, Balasingham I (2015)
In-Body to On-Body Ultrawideband Propagation Model Derived From Measurements in Living Animals
IEEE J Biomed Health Inform, 19 (3), 938-48
DOI 10.1109/JBHI.2015.2417805, PubMed 25861089

Grymyr OJ, Nguyen AT, Tjulkins F, Espinoza A, Remme EW, Skulstad H, Fosse E, Imenes K, Halvorsen PS (2015)
Continuous monitoring of cardiac function by 3-dimensional accelerometers in a closed-chest pig model
Interact Cardiovasc Thorac Surg, 21 (5), 573-82
DOI 10.1093/icvts/ivv191, PubMed 26254463

Hyler S, Pischke SE, Halvorsen PS, Espinoza A, Bergsland J, Tønnessen TI, Fosse E, Skulstad H (2015)
Continuous monitoring of regional function by a miniaturized ultrasound transducer allows early quantification of low-grade myocardial ischemia
J Am Soc Echocardiogr, 28 (4), 486-94
DOI 10.1016/j.echo.2014.12.014, PubMed 25636368

Kerans V, Espinoza A, Skulstad H, Halvorsen PS, Edvardsen T, Bugge JF (2015)
Systolic left ventricular function is preserved during therapeutic hypothermia, also during increases in heart rate with impaired diastolic filling
Intensive Care Med Exp, 3 (1), 41
DOI 10.1186/s40635-015-0041-6, PubMed 26215808

Publications 2014

Courivaud F, Kazaryan AM, Lund A, Orszagh VC, Svindland A, Marangos IP, Halvorsen PS, Jebsen P, Fosse E, Hol PK, Edwin B (2014)
Thermal fixation of swine liver tissue after magnetic resonance-guided high-intensity focused ultrasound ablation
Ultrasound Med Biol, 40 (7), 1564-77
DOI 10.1016/j.ultrasmedbio.2014.02.007, PubMed 24768489

Grymyr OJ, Remme EW, Espinoza A, Skulstad H, Elle OJ, Fosse E, Halvorsen PS (2014)
Assessment of 3D motion increases the applicability of accelerometers for monitoring left ventricular function
Interact Cardiovasc Thorac Surg, 20 (3), 329-37
DOI 10.1093/icvts/ivu404, PubMed 25472979

Hestenes SM, Halvorsen PS, Skulstad H, Remme EW, Espinoza A, Hyler S, Bugge JF, Fosse E, Nielsen EW, Edvardsen T (2014)
Advantages of strain echocardiography in assessment of myocardial function in severe sepsis: an experimental study
Crit Care Med, 42 (6), e432-40
DOI 10.1097/CCM.0000000000000310, PubMed 24633187

Hyler S, Espinoza A, Skulstad H, Fosse E, Halvorsen PS (2014)
Left ventricular function can be continuously monitored with an epicardially attached accelerometer sensor
Eur J Cardiothorac Surg, 46 (2), 313-20
DOI 10.1093/ejcts/ezt653, PubMed 24482390

Nguyen ATT, Tjulkins F, Aasmundtveit KE, Hoivik N, Hoff L, Grymyr OJ, Halvorsen PS, Imenes K (2014)
Packaging of a Multifunctional Implantable Heart Monitoring Device
2014 SYMPOSIUM ON DESIGN, TEST, INTEGRATION AND PACKAGING OF MEMS/MOEMS (DTIP), 322-327

Pischke SE, Hyler S, Tronstad C, Bergsland J, Fosse E, Halvorsen PS, Skulstad H, Tønnessen TI (2014)
Myocardial tissue CO2 tension detects coronary blood flow reduction after coronary artery bypass in real-time†
Br J Anaesth, 114 (3), 414-22
DOI 10.1093/bja/aeu381, PubMed 25392231

Tjulkins F, Nguyen AT, Andreassen E, Aasmundtveit K, Hoivik N, Hoff L, Halvorsen PS, Grymyr OJ, Imenes K (2014)
Fabrication and assembly of MEMS accelerometer-based heart monitoring device with simplified, one step placement
J Med Eng Technol, 39 (1), 69-74
DOI 10.3109/03091902.2014.981307, PubMed 25429874

Tjulkins F, Nguyen ATT, Andreassen E, Hoivik N, Aasmundtveit K, Hoff L, Grymyr OJ, Halvorsen PS, Imenes K (2014)
MEMS-Based Implantable Heart Monitoring System with Integrated Pacing Function
ELEC COMP C, 139-144

Publications 2013

Espinoza A, Kerans V, Opdahl A, Skulstad H, Halvorsen PS, Bugge JF, Fosse E, Edvardsen T (2013)
Effects of therapeutic hypothermia on left ventricular function assessed by ultrasound imaging
J Am Soc Echocardiogr, 26 (11), 1353-63
DOI 10.1016/j.echo.2013.06.021, PubMed 23891124

Publications 2012

Pischke SE, Tronstad C, Holhjem L, Halvorsen PS, Tønnessen TI (2012)
Perioperative detection of myocardial ischaemia/reperfusion with a novel tissue CO2 monitoring technology
Eur J Cardiothorac Surg, 42 (1), 157-63
DOI 10.1093/ejcts/ezr278, PubMed 22290904

Remme EW, Hoff L, Halvorsen PS, Opdahl A, Fosse E, Elle OJ (2012)
Simulation model of cardiac three dimensional accelerometer measurements
Med Eng Phys, 34 (7), 990-8
DOI 10.1016/j.medengphy.2012.04.015, PubMed 22633656

Publications 2011

Awan ZA, Häggblad E, Wester T, Kvernebo MS, Halvorsen PS, Kvernebo K (2011)
Diffuse reflectance spectroscopy: Systemic and microvascular oxygen saturation is linearly correlated and hypoxia leads to increased spatial heterogeneity of microvascular saturation
Microvasc Res, 81 (3), 245-51
DOI 10.1016/j.mvr.2011.02.004, PubMed 21376735

Johansson ML, Thomsen P, Hultén L, Halvorsen PS, Fosse E, Edwin B (2011)
Integration between a percutaneous implant and the porcine small bowel
J Biomed Mater Res B Appl Biomater, 98 (1), 101-9
DOI 10.1002/jbm.b.31838, PubMed 21563306

Publications 2010

Espinoza A, Halvorsen PS, Skulstad H, Lundblad R, Bugge JF, Hoff L, Fosse E, Edvardsen T (2010)
Automated detection of myocardial ischaemia by epicardial miniature ultrasound transducers--a novel tool for patient monitoring during cardiac surgery
Eur J Cardiothorac Surg, 39 (1), 53-9
DOI 10.1016/j.ejcts.2010.03.067, PubMed 20627751

Wester T, Häggblad E, Awan ZA, Barratt-Due A, Kvernebo M, Halvorsen PS, Mollnes TE, Kvernebo K (2010)
Assessments of skin and tongue microcirculation reveals major changes in porcine sepsis
Clin Physiol Funct Imaging, 31 (2), 151-8
DOI 10.1111/j.1475-097X.2010.00994.x, PubMed 21087397

Publications 2009

Bergsland J, Lingaas PS, Skulstad H, Hol PK, Halvorsen PS, Andersen R, Småstuen M, Lundblad R, Svennevig J, Andersen K, Fosse E (2009)
Intracoronary shunt prevents ischemia in off-pump coronary artery bypass surgery
Ann Thorac Surg, 87 (1), 54-60
DOI 10.1016/j.athoracsur.2008.08.032, PubMed 19101268

Espinoza A, Halvorsen PS, Hoff L, Skulstad H, Fosse E, Ihlen H, Edvardsen T (2009)
Detecting myocardial ischaemia using miniature ultrasonic transducers--a feasibility study in a porcine model
Eur J Cardiothorac Surg, 37 (1), 119-26
DOI 10.1016/j.ejcts.2009.05.013, PubMed 19581103

Halvorsen PS, Remme EW, Espinoza A, Skulstad H, Lundblad R, Bergsland J, Hoff L, Imenes K, Edvardsen T, Elle OJ, Fosse E (2009)
Automatic real-time detection of myocardial ischemia by epicardial accelerometer
J Thorac Cardiovasc Surg, 139 (4), 1026-32
DOI 10.1016/j.jtcvs.2009.05.031, PubMed 19717169

Remme EW, Hoff L, Halvorsen PS, Naerum E, Skulstad H, Fleischer LA, Elle OJ, Fosse E (2009)
Validation of cardiac accelerometer sensor measurements
Physiol Meas, 30 (12), 1429-44
DOI 10.1088/0967-3334/30/12/010, PubMed 19907074

Publications 2008

Fleischer LA, Halvorsen PS, Hoff L, Fosse E, Elle OJ (2008)
Epicardial Acceleration Signal Measured Using a Single Chip 3-axis Accelerometer
IFMBE PROC, 20, 221-+

Halvorsen PS, Espinoza A, Fleischer LA, Elle OJ, Hoff L, Lundblad R, Skulstad H, Edvardsen T, Ihlen H, Fosse E (2008)
Feasibility of a three-axis epicardial accelerometer in detecting myocardial ischemia in cardiac surgical patients
J Thorac Cardiovasc Surg, 136 (6), 1496-502
DOI 10.1016/j.jtcvs.2008.08.043, PubMed 19114197

Halvorsen PS, Fleischer LA, Espinoza A, Elle OJ, Hoff L, Skulstad H, Edvardsen T, Fosse E (2008)
Detection of myocardial ischaemia by epicardial accelerometers in the pig
Br J Anaesth, 102 (1), 29-37
DOI 10.1093/bja/aen331, PubMed 19022793

Publications 2007

Frich L, Halvorsen PS, Skulstad H, Damås JK, Gladhaug IP (2007)
Microbubbles in the pulmonary artery generated during experimental hepatic radiofrequency ablation is correlated with increased pulmonary arterial pressure
J Vasc Interv Radiol, 18 (3), 437-42
DOI 10.1016/j.jvir.2006.12.010, PubMed 17377191

Halvorsen PS, Sokolov A, Cvancarova M, Hol PK, Lundblad R, Tønnessen TI (2007)
Continuous cardiac output during off-pump coronary artery bypass surgery: pulse-contour analyses vs pulmonary artery thermodilution
Br J Anaesth, 99 (4), 484-92
DOI 10.1093/bja/aem199, PubMed 17650518

Hol PK, Andersen K, Skulstad H, Halvorsen PS, Lingaas PS, Andersen R, Bergsland J, Fosse E (2007)
Epicardial ultrasonography: a potential method for intraoperative quality assessment of coronary bypass anastomoses?
Ann Thorac Surg, 84 (3), 801-7
DOI 10.1016/j.athoracsur.2007.04.025, PubMed 17720379

Imenes K, Aasmundtveit K, Husa EM, Høgetveit JO, Halvorsen S, Elle OJ, Mirtaheri P, Fosse E, Hoff L (2007)
Assembly and packaging of a three-axis micro accelerometer used for detection of heart infarction
Biomed Microdevices, 9 (6), 951-7
DOI 10.1007/s10544-007-9082-2, PubMed 17492383

Publications 2006

Halvorsen PS, Espinoza A, Lundblad R, Cvancarova M, Hol PK, Fosse E, Tønnessen TI (2006)
Agreement between PiCCO pulse-contour analysis, pulmonal artery thermodilution and transthoracic thermodilution during off-pump coronary artery by-pass surgery
Acta Anaesthesiol Scand, 50 (9), 1050-7
DOI 10.1111/j.1399-6576.2006.01118.x, PubMed 16987335

Publications 2005

Elle OJ, Halvorsen S, Gulbrandsen MG, Aurdal L, Bakken A, Samset E, Dugstad H, Fosse E (2005)
Early recognition of regional cardiac ischemia using a 3-axis accelerometer sensor
Physiol Meas, 26 (4), 429-40
DOI 10.1088/0967-3334/26/4/009, PubMed 15886438

Mathisen L, Andersen MH, Hol PK, Tennøe B, Lund C, Russell D, Lundblad R, Halvorsen S, Wahl AK, Hanestad BR, Fosse E (2005)
Preoperative cerebral ischemic lesions predict physical health status after on-pump coronary artery bypass surgery
J Thorac Cardiovasc Surg, 130 (6), 1691-7
DOI 10.1016/j.jtcvs.2005.08.008, PubMed 16308017

Skjelland M, Bergsland J, Lundblad R, Lingaas PS, Rein KA, Halvorsen S, Svennevig JL, Fosse E, Brucher R, Russell D (2005)
Cerebral microembolization during off-pump coronary artery bypass surgery with the Symmetry aortic connector device
J Thorac Cardiovasc Surg, 130 (6), 1581-5
DOI 10.1016/j.jtcvs.2005.08.015, PubMed 16308002

Publications 2004

Bergsland J, Hol PK, Lingås PS, Lundblad R, Rein KA, Andersen R, Mørk BE, Halvorsen S, Mujanovic E, Kabil E, Svennevig JL, Fosse E (2004)
Intraoperative and intermediate-term angiographic results of coronary artery bypass surgery with Symmetry proximal anastomotic device
J Thorac Cardiovasc Surg, 128 (5), 718-23
DOI 10.1016/j.jtcvs.2004.07.001, PubMed 15514599

Publications 1990

Iversen PO, Grønseth SA, Høva N, Halvorsen PS, Nilsen T, Skrede S (1990)
[Occupational health care, coordination with primary health care]
Tidsskr Nor Laegeforen, 110 (8), 991-2
PubMed 2321236