Publication list - Publika - Scientific publications from Oslo University Hospital

Publications by Karl Arne Johannessen

36 publications found

Original articles

Comtet HE, Keitsch M, Johannessen KA (2022)
Realities of Using Drones to Transport Laboratory Samples: Insights from Attended Routes in a Mixed-Methods Study
J Multidiscip Healthc, 15, 1871-1885
DOI 10.2147/JMDH.S371957, PubMed 36068877

Johannessen KA, Comtet H, Fosse E (2021)
A Drone Logistic Model for Transporting the Complete Analytic Volume of a Large-Scale University Laboratory
Int J Environ Res Public Health, 18 (9)
DOI 10.3390/ijerph18094580, PubMed 33926130

Comtet HE, Johannessen KA (2021)
The Moderating Role of Pro-Innovative Leadership and Gender as an Enabler for Future Drone Transports in Healthcare Systems
Int J Environ Res Public Health, 18 (5)
DOI 10.3390/ijerph18052637, PubMed 33807951

Johannessen KA, Wear NKS, Toska K, Hansbo M, Berg JP, Fosse E (2021)
Pathologic Blood Samples Tolerate Exposure to Vibration and High Turbulence in Simulated Drone Flights, but Plasma Samples Should be Centrifuged After Flight
IEEE J Transl Eng Health Med, 9, 4000110
DOI 10.1109/JTEHM.2021.3053172, PubMed 33542860

Johannessen KA, Fonn E (2020)
Splipy: B-Spline and NURBS Modelling in Python
J PHYS CONF SER, 1669, 012032
DOI 10.1088/1742-6596/1669/1/012032

Johannessen KA, Alexandersen N (2018)
Improving accessibility for outpatients in specialist clinics: reducing long waiting times and waiting lists with a simple analytic approach
BMC Health Serv Res, 18 (1), 827
DOI 10.1186/s12913-018-3635-3, PubMed 30382845

Johannessen KA, Kittelsen SA, Hagen TP (2017)
Assessing physician productivity following Norwegian hospital reform: A panel and data envelopment analysis
Soc Sci Med, 175, 117-126
DOI 10.1016/j.socscimed.2017.01.008, PubMed 28088617

Johannessen KA, Hagen TP (2014)
Physicians' engagement in dual practices and the effects on labor supply in public hospitals: results from a register-based study
BMC Health Serv Res, 14, 299
DOI 10.1186/1472-6963-14-299, PubMed 25011448

Johannessen KA, Hagen TP (2013)
Individual and hospital-specific factors influencing medical graduates' time to medical specialization
Soc Sci Med, 97, 170-5
DOI 10.1016/j.socscimed.2013.08.026, PubMed 24161102

Johannessen KA, Hagen TP (2012)
Variations in labor supply between female and male hospital physicians: results from a modern welfare state
Health Policy, 107 (1), 74-82
DOI 10.1016/j.healthpol.2012.05.009, PubMed 22739127

Johannessen KA (2010)
[Salary and clinical productivity among physicians in Norwegian somatic hospitals 2001-2008]
Tidsskr Nor Laegeforen, 130 (18), 1810-4
DOI 10.4045/tidsskr.09.0525, PubMed 20882077

Levy WC, Cerqueira MD, Harp GD, Johannessen KA, Abrass IB, Schwartz RS, Stratton JR (1998)
Effect of endurance exercise training on heart rate variability at rest in healthy young and older men
Am J Cardiol, 82 (10), 1236-41
DOI 10.1016/s0002-9149(98)00611-0, PubMed 9832101

Norgård G, Johannessen KA (1993)
Variability of digitized left ventricular M-mode echocardiography: a study in healthy subjects and patients with repaired tetralogy of Fallot
Clin Physiol, 13 (4), 373-83
DOI 10.1111/j.1475-097x.1993.tb00337.x, PubMed 8370237

Vik-Mo H, Johannessen KA (1992)
[Angina pectoris after coronary angioplasty. Restenosis or partial revascularization]
Tidsskr Nor Laegeforen, 112 (11), 1433-5
PubMed 1631814

Johannessen KA, Mygland A, Gilhus NE, Aarli J, Vik-Mo H (1992)
Left ventricular function in myasthenia gravis
Am J Cardiol, 69 (1), 129-32
DOI 10.1016/0002-9149(92)90688-u, PubMed 1729861

Johannessen KA, Cerqueira M, Veith RC, Stratton JR (1991)
The relation between radionuclide angiography and Doppler echocardiography during contractile changes with infusions of epinephrine
Int J Cardiol, 33 (1), 149-57
DOI 10.1016/0167-5273(91)90163-j, PubMed 1937970

Johannessen KA, Andersen K, Følling M, Vik-Mo H (1991)
[The usefulness of thallium-201 scintigraphy in the diagnosis of coronary disease]
Tidsskr Nor Laegeforen, 111 (7), 835-7
PubMed 2020950

Johannessen KA, Cerqueira M, Veith RC, Stratton JR (1991)
Influence of sympathetic stimulation and parasympathetic withdrawal on Doppler echocardiographic left ventricular diastolic filling velocities in young normal subjects
Am J Cardiol, 67 (6), 520-6
DOI 10.1016/0002-9149(91)90015-d, PubMed 1998284

Vik-Mo H, Johannessen KA (1991)
[Nuclear medical cardiology]
Tidsskr Nor Laegeforen, 111 (6), 673-4
PubMed 2008683

Johannessen KA, Cerqueira MD, Stratton JR (1990)
Influence of myocardial infarction size on radionuclide and Doppler echocardiographic measurements of diastolic function
Am J Cardiol, 65 (11), 692-7
DOI 10.1016/0002-9149(90)90242-s, PubMed 2316448

Otto CM, Stratton JR, Maynard C, Althouse R, Johannessen KA, Kennedy JW (1990)
Echocardiographic evaluation of segmental wall motion early and late after thrombolytic therapy in acute myocardial infarction: the Western Washington Tissue Plasminogen Activator Emergency Room Trial
Am J Cardiol, 65 (3), 132-8
DOI 10.1016/0002-9149(90)90073-a, PubMed 2105048

Stratton JR, Nemanich JW, Johannessen KA, Resnick AD (1988)
Fate of left ventricular thrombi in patients with remote myocardial infarction or idiopathic cardiomyopathy
Circulation, 78 (6), 1388-93
DOI 10.1161/01.cir.78.6.1388, PubMed 3191593

Johannessen KA, Nordrehaug JE, von der Lippe G, Vollset SE (1988)
Risk factors for embolisation in patients with left ventricular thrombi and acute myocardial infarction
Br Heart J, 60 (2), 104-10
DOI 10.1136/hrt.60.2.104, PubMed 3415869

Johannessen KA, Nordrehaug JE, von der Lippe G (1987)
Left ventricular thrombi after short-term high-dose anticoagulants in acute myocardial infarction
Eur Heart J, 8 (9), 975-80
DOI 10.1093/oxfordjournals.eurheartj.a062374, PubMed 3665957

Johannessen KA (1987)
Peripheral emboli from left ventricular thrombi of different echocardiographic appearance in acute myocardial infarction
Arch Intern Med, 147 (4), 641-4
DOI 10.1001/archinte.147.4.641, PubMed 3827450

Johannessen KA, Nordrehaug JE, von der Lippe G (1987)
Increased occurrence of left ventricular thrombi during early treatment with timolol in patients with acute myocardial infarction
Circulation, 75 (1), 151-5
DOI 10.1161/01.cir.75.1.151, PubMed 3791601

Nordrehaug JE, Johannessen KA, von der Lippe G (1987)
Primary ventricular fibrillation associated with hypokalaemia in acute myocardial infarction
Mater Med Pol, 19 (4), 254-7
PubMed 3454834

Johannessen KA, Nordrehaug JE, von der Lippe G (1985)
[Ventricular wall motion. Computer analysis with 2-dimensional echocardiography]
Tidsskr Nor Laegeforen, 105 (33), 2387-90
PubMed 4082156

Nordrehaug JE, Johannessen KA, von der Lippe G, Myking OL (1985)
Circulating catecholamine and potassium concentrations early in acute myocardial infarction: effect of intervention with timolol
Am Heart J, 110 (5), 944-8
DOI 10.1016/0002-8703(85)90189-9, PubMed 4061268

Nordrehaug JE, Johannessen KA, von der Lippe G (1985)
Usefulness of high-dose anticoagulants in preventing left ventricular thrombus in acute myocardial infarction
Am J Cardiol, 55 (13 Pt 1), 1491-3
DOI 10.1016/0002-9149(85)90959-2, PubMed 3890508

Nordrehaug JE, Johannessen KA, von der Lippe G, Sederholm M, Grøttum P, Kjekshus J (1985)
Effect of timolol on changes in serum potassium concentration during acute myocardial infarction
Br Heart J, 53 (4), 388-93
DOI 10.1136/hrt.53.4.388, PubMed 3885979

Nordrehaug JE, Johannessen KA, von der Lippe G (1985)
Serum potassium concentration as a risk factor of ventricular arrhythmias early in acute myocardial infarction
Circulation, 71 (4), 645-9
DOI 10.1161/01.cir.71.4.645, PubMed 3971535

Nordrehaug JE, Johannessen KA, von der Lippe G (1984)
[Left ventricular thrombosis in acute myocardial infarction]
Tidsskr Nor Laegeforen, 104 (14), 966-8
PubMed 6463985

Johannessen KA, Nordrehaug JE, von der Lippe G (1984)
Left ventricular thrombosis and cerebrovascular accident in acute myocardial infarction
Br Heart J, 51 (5), 553-6
DOI 10.1136/hrt.51.5.553, PubMed 6721949