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Karl-Arne Johannessen | Researchclopedia

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Karl-Arne Johannessen

Oslo University Hospital

50

Works

4,962

Citations

22

h-index

31

i10-index

Research Topics

Cardiac tumors and thrombi Cardiac Imaging and Diagnostics Cardiac Structural Anomalies and Repair

Affiliations

Oslo University Hospital2018–2026

Statistics Norway2018–2018

United States Department of Veterans Affairs1990–1990

OsloMet – Oslo Metropolitan University2018–2018

University of Oslo2021–2026

Top Works

Effect of endurance exercise training on heart rate variability at rest in healthy young and older men

Wayne C. Levy,Manuel D. Cerqueira,et al.

1998310 citations

Atrial Fibrillation Management and Outcomes

Cardiovascular Function and Risk Factors

Serum potassium concentration as a risk factor of ventricular arrhythmias early in acute myocardial infarction.

Jan Erik Nordrehaug,Karl-Arne Johannessen,et al.

1985221 citations

Left ventricular thrombosis and cerebrovascular accident in acute myocardial infarction.

Karl-Arne Johannessen,Jan Erik Nordrehaug,et al.

1984112 citations

Risk factors for embolisation in patients with left ventricular thrombi and acute myocardial infarction.

Karl-Arne Johannessen,Jan Erik Nordrehaug,et al.

198888 citations

Fate of left ventricular thrombi in patients with remote myocardial infarction or idiopathic cardiomyopathy.

Jon Stratton,John W. Nemanich,et al.

198886 citations

Usefulness of high-dose anticoagulants in preventing left ventricular thrombus in acute myocardial infarction

Jan Erik Nordrehaug,Karl-Arne Johannessen,et al.

198581 citations

Improving accessibility for outpatients in specialist clinics: reducing long waiting times and waiting lists with a simple analytic approach

Karl-Arne Johannessen,Nina Alexandersen

201859 citations

Assessing physician productivity following Norwegian hospital reform: A panel and data envelopment analysis

Karl-Arne Johannessen,Sverre A.C. Kittelsen,et al.

201756 citations

Effect of timolol on changes in serum potassium concentration during acute myocardial infarction.

Jan Erik Nordrehaug,Karl-Arne Johannessen,et al.

198543 citations