Browsing Institutt for sirkulasjon og bildediagnostikk by Author "Aadahl, Petter"
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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) -
Animal study assessing safety of an acoustic coupling fluid that holds the potential to avoid surgically induced artifacts in 3D ultrasound guided operations
Jakola, Asgeir S; Jørgensen, Arve; Selbekk, Tormod; Michler, Ralf-Peter; Solheim, Ole; Torp, Sverre Helge; Sagberg, Lisa Millgård; Aadahl, Petter; Unsgård, Geirmund (Journal article; Peer reviewed, 2014)Background Use of ultrasound in brain tumor surgery is common. The difference in attenuation between brain and isotonic saline may cause artifacts that degrade the ultrasound images, potentially affecting resection grades ... -
Beat-by-beat cardiac power: Minimally invasive assessment of overall cardiovascular performance
Rimehaug, Audun Eskeland (Doctoral theses at NTNU;2016:316, Doctoral thesis, 2016) -
Blood Glucose Control Using a Novel Continuous Blood Glucose Monitor and Repetitive Intravenous Insulin Boluses: Exploiting Natural Insulin Pulsatility as a Principle for a Future Artificial Pancreas
Skjaervold, Nils Kristian; Østling, Dan; Hjelme, Dag Roar; Spigset, Olav; Lyng, Oddveig; Aadahl, Petter (Journal article; Peer reviewed, 2013)The aim of this study was to construct a glucose regulatory algorithm by employing the natural pulsatile pattern of insulin secretion and the oscillatory pattern of resting blood glucose levels and further to regulate the ... -
Bronchial microdialysis monitoring of inflammatory response in open abdominal aortic aneurysm repair; an observational study.
Tyvold, Stig Sverre; Dahl, Torbjørn; Dragsund, Stein; Gunnes, Sigurd; Lyng, Oddveig; Damås, Jan Kristian; Aadahl, Petter; Solligård, Erik (Journal article; Peer reviewed, 2017)Aortic surgery results in ischemia–reperfusion injury that induces an inflammatory response and frequent complications. The magnitude of the inflammatory response in blood and bronchi may be associated with the risk of ... -
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 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 ... -
Cardiac surgery does not lead to loss of oscillatory components in circulatory signals
Knai, Kathrine; Aadahl, Petter; Skjærvold, Nils Kristian (Peer reviewed; Journal article, 2020)The circulatory system is oscillatory in its nature. Oscillatory components linked to physiological processes and underlying regulatory mechanisms are identifiable in circulatory signals. Autonomic regulation is essential ... -
Circulatory characterization of the post-cardiac arrest syndrome: A study of the inflammatory response and the circulatory failure after out-of-hospital cardiac arrest
Langeland, Halvor J. B. (Doctoral theses at NTNU;2022:116, Doctoral thesis, 2022)Norsk sammendrag EN STUDIE AV BETENNELSESREAKSJONEN OG SIRKULASJONSSVIKTEN ETTER HJERTESTANS UTENFOR SYKEHUS Det har lenge vært kjent at hjertestans fører til en voldsom betennelsesreaksjon, som igjen fører til en dødelig ... -
Communication in Action: Talk-work relationship in knowledgedriven emergency team activities
Gundrosen, Stine (Doctoral theses at NTNU;2019:78, Doctoral thesis, 2019)Norsk sammendrag Kommunikasjon i handling Forholdet mellom team-språk og teamarbeid i akuttsituasjoner Når alarmen går på sykehuset rykker leger og sykepleiere med forskjellig spesialkompetanse ut for å hjelpe pasienter ... -
Doppler based cardiac power. From experimental physiology to patient monitoring
Tannvik, Tomas Dybos (Doctoral theses at NTNU;2020:272, Doctoral thesis, 2020) -
Influence of patient-specific rehearsal on operative metrics and technical success for endovascular aneurysm repair
Våpenstad, Cecilie; Lamøy, Siv Marit Jonli; Aasgaard, Frode; Manstad-Hulaas, Frode; Aadahl, Petter; Søvik, Edmund; Stensæth, Knut Haakon (Peer reviewed; Journal article, 2020)Introduction: Patient-specific rehearsal (PsR) is a recent technology within virtual reality (VR) simulation that lets the operators train on patient-specific data in a simulated environment prior to the procedure. ... -
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) ... -
Optimal timing of assessment tasks depending on experience level of surgical trainees
Våpenstad, Cecilie; Hofstad, Erlend Fagertun; Bernstein, Tor Eivind; Aadahl, Petter; Johnsen, Gjermund; Mårvik, Ronald (Peer reviewed; Journal article, 2019)Introduction: Box trainers with motion analysis are important add-ons to surgical training and skills assessment outside the operating room, given that they exhibit construct validity. Material and methods: Four different ... -
Oscillations in biological signal
Knai, Kathrine (Doctoral theses at NTNU;2020:302, Doctoral thesis, 2020)This thesis is a study of electrocardiography, blood pressure and glucose signals in the search for oscillatory physiological processes that are of importance for resilience and the development of disease. An oscillation ... -
Prehospitale triageringsverktøy – hvor gode er de?: Om tidlig identifisering av pasienter med akutt koronarsykdom
Monrad-Hansen, Marte; Øie, Marte Vaage (Master thesis, 2013)Bakgrunn: Akutte brystsmerter er et viktig og hyppig symptom hos pasienter som kommer i kontakt med akuttmedisinsk kommunikasjonssentral (AMK) gjennom bruk av nødnummeret 113. Det store spennet i alvorlighetsgrad ... -
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 ... -
Simulation-based Training and Assessment in Minimally Invasive Surgery Exploration and Validation
Våpenstad, Cecilie (Doctoral theses at NTNU;2019:323, Doctoral thesis, 2019)Changes in surgical techniques and public attention to surgeons’ competencies in general, created a growth in simulation-based training in the late 90’s. The introduction of minimally invasive surgery, with its distinct ... -
Team talk and team activity in simulated medical emergencies: a discourse analytical approach
Gundrosen, Stine; Aadahl, Petter; Andenæs, Ellen; Thomassen, Gøril Margrethe (Journal article; Peer reviewed, 2016)Background: Communication errors can reduce patient safety, especially in emergency situations that require rapid responses by experts in a number of medical specialties. Talking to each other is crucial for utilizing ... -
Team talk and team decision processes: a qualitative discourse analytical approach to 10 real-life medical emergency team encounters
Gundrosen, Stine; Thomassen, Gøril; Wisborg, Torben; Aadahl, Petter (Journal article; Peer reviewed, 2018)Objectives Explore the function of three specific modes of talk (discourse types) in decision-making processes. Design Ten real-life admissions of patients with critical illness were audio/video recorded and transcribed. ...