Browsing NTNU Open by Author "Kirkeby-Garstad, Idar"
Now showing items 1-11 of 11
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ALTERED CIRCULATORY RESPONSES TO EARLY PHYSICAL ACTIVITY AFTER ON-PUMP CORONARY ARTERY SURGERY - A clinical study of cardiac function, peripheral vascular responses, and muscle metabolism
Dedichen, Hans Henrik (Doctoral theses at NTNU;2019:314, Doctoral thesis, 2019) -
Automatic assessment of left ventricular function for hemodynamic monitoring using artificial intelligence and transesophageal echocardiography
Yu, Jinyang; Tasken, Anders Austlid; Flade, Hans Martin; Skogvoll, Eirik; Berg, Erik Andreas Rye; Grenne, Bjørnar Leangen; Rimehaug, Audun Eskeland; Kirkeby-Garstad, Idar; Aakhus, Svend (Peer reviewed; Journal article, 2024)We have developed a method to automatically assess LV function by measuring mitral annular plane systolic excursion (MAPSE) using artificial intelligence and transesophageal echocardiography (autoMAPSE). Our aim was to ... -
Beat-by-beat cardiac power: Minimally invasive assessment of overall cardiovascular performance
Rimehaug, Audun Eskeland (Doctoral theses at NTNU;2016:316, Doctoral thesis, 2016) -
Cardiac power integral: a new method for monitoring cardiovascular performance
Rimehaug, Audun Eskeland; Lyng, Oddveig; Nordhaug, Dag Ole; Løvstakken, Lasse; Aadahl, Petter; Kirkeby-Garstad, Idar (Journal article; Peer reviewed, 2013)Cardiac power (PWR) is the continuous product of flow and pressure in the proximal aorta. Our aim was to validate the PWR integral as a marker of left ventricular energy transfer to the aorta, by comparing it to stroke ... -
Cardiac power output og stroke work postoperativt etter hjertekirurgi : energileveranse fra hjertet det første døgnet postoperativt etter hjertekirurgi
Shvets, Ksenia (Master thesis, 2016)Introduksjon Cardiac power output (CPO) er tidsintegralet av hjerteminutt-‐volumet (CO) og middelarterie-‐ trykk (MAP) og er et uttrykk for den samlede energileveransen fra hjertet. Stroke work (SW) er energileveransen ... -
Cardiac power parameters during hypovolemia, induced by the lower body negative pressure technique, in healthy volunteers
Rimehaug, Audun Eskeland; Hoff, Ingrid E Taraldsrud; Høiseth, Lars Øivind; Hisdal, Jonny; Aadahl, Petter; Kirkeby-Garstad, Idar (Journal article; Peer reviewed, 2016)Background: Changes in cardiac power parameters incorporate changes in both aortic flow and blood pressure. We hypothesized that dynamic and non-dynamic cardiac power parameters would track hypovolemia better than equivalent ... -
Minimally invasive beat-by-beat monitoring of cardiac power in normal hearts and during acute ventricular dysfunction
Rimehaug, Audun Eskeland; Skogvoll, Eirik; Aadahl, Petter; Lyng, Oddveig; Nordhaug, Dag Ole; Løvstakken, Lasse; Kirkeby-Garstad, Idar (Journal article; Peer reviewed, 2016)Cardiac power, the product of aortic flow and blood pressure, appears to be a fundamental cardiovascular parameter. The simplified version named cardiac power output (CPO), calculated as the product of cardiac output (CO) ... -
Post Cardiac Surgery Stunning Reduces Stroke Work, but Leaves Cardiac Power Output Unchanged in Patients with Normal Ejection Fraction
Tannvik, Tomas Dybos; Rimehaug, Audun Eskeland; Skjaervold, Nils Kristian; Kirkeby-Garstad, Idar (Journal article; Peer reviewed, 2018)This study assesses positional changes in cardiac power output and stroke work compared to classic haemodynamic variables, measured before and after elective coronary artery bypass graft surgery. The hypothesis was that ... -
Qualitative changes in microvascular resistance in early sepsis
Bjørnbeth, Thale Maria (Master thesis, 2020)Innledning: Tidlig diagnose og behandling er avgjørende overlevelse av sepsis. Sepsis oppdages med SOFA-scoringssystemet, der alvorlig hypotensjon er et av vurderingskriteriene. Hypotensjon er i midlertidig et sent og ... -
Reduced reactive hyperemia may explain impaired flow-mediated dilation after on-pump cardiac surgery
Dedichen, Hans Henrik; Hisdal, Jonny; Skogvoll, Eirik; Aadahl, Petter; Kirkeby-Garstad, Idar (Journal article; Peer reviewed, 2017)In previous studies, Flow Mediated Dilation (FMD) was used to study the effect of cardiac surgery on endothelial function. This study investigated the effect of on‐pump cardiac surgery on FMD and reactive hyperemia. The ... -
Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise
Steffensen, Torjus Lines; Schjerven, Filip Emil; Flade, Hans Martin; Kirkeby-Garstad, Idar; Ingeström, Emma Maria Lovisa; Solberg, Fredrik Samdal; Steinert, Martin (Peer reviewed; Journal article, 2023)Objective: Ballistocardiogram (BCG) features are of interest in wearable cardiovascular monitoring of cardiac performance. We assess feasibility of wrist acceleration BCG during exercise for estimating pulse transit time ...