Stig Eggen Hermansen

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Shear stress has an established effect on mature endothelial cells, but less is known about how shear stress regulates endothelial progenitor cells (EPCs). In vitro expanded EPCs isolated from adult human blood represent a novel tool in regenerative vessel therapy. However, in vitro culturing may generate cells with unfavourable properties. The aim of the(More)
Systemic inflammation and elevated circulating levels of the endogenous nitric oxide inhibitor asymmetrical dimethylarginine (ADMA) have been associated with increased risk in cardiogenic shock (CS). In this prospective study, we assessed, over 4 consecutive days, the changes and possible associations between vascular function, markers of inflammation, and(More)
BACKGROUND We addressed the hypothesis that the inotropic drugs dobutamine and levosimendan both induce surplus oxygen consumption (oxygen wasting) relative to their contractile effect in equipotent therapeutic doses, with levosimendan being energetically more efficient. METHODS AND RESULTS Postischemically reduced left ventricular function (stunning) was(More)
INTRODUCTION Arginine vasopressin (AVP) is increasingly used to restore mean arterial pressure (MAP) in low-pressure shock states unresponsive to conventional inotropes. This is potentially deleterious since AVP is also known to reduce cardiac output by increasing vascular resistance. The effects of AVP on blood flow to vital organs and cardiac performance(More)
The comment concerns two short-term assist systems, namely the Impella axial-flow recovery system and extra-corporeal membrane oxygenation (ECMO) used for circulatory assistance in patients with acute heart failure. The results, particularly for patients in cardiogenic shock not related to cardiac surgery, calls for cautious optimism.
We assessed the hemodynamic effects of guideline therapy in experimental cardiogenic shock and compared this treatment with a combination containing an alternative vasopressor (arginine vasopressin, AVP). Our hypothesis was that combined dobutamine-norepinephrine still is the superior inopressor therapy assessed by ventriculoarterial matching in both(More)
The therapeutic utility of endothelial progenitor cells (EPCs) in cardiovascular disease is potentially hampered by their low numbers in the circulation, impaired functional activity, and inhibitory factors in the recipient. These obstacles can possibly be circumvented by the use of proangiogenic cytokines and peptides. We sought to examine the effect of(More)
UNLABELLED The radial artery is resistant to atherosclerotic degeneration and therefore appears more attractive for coronary artery bypass grafting than the saphenous vein. However, the patency of radial artery grafts varies widely among studies. Therefore, before deciding whether to adopt this as the conduit of choice second to internal mammary artery(More)
OBJECTIVES The most severe forms of acute heart failure have a dismal prognosis despite modern invasive treatment. For some of these patients, improved outcome must relay on early institution of ventricular assist devices (VAD). We aimed to estimate the potential VAD need in acute heart failure. DESIGN All patients admitted to the ICU or CCU for acute(More)