Browsing NTNU Open by Author "Skjærvold, Nils Kristian"
Now showing items 1-16 of 16
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A pig model of acute right ventricular afterload increase by hypoxic pulmonary vasoconstriction
Knai, Kathrine (Master thesis, 2017)Background: The aim of this study was to construct a non-invasive model for acute right ventricular afterload increase by hypoxic pulmonary vasoconstriction. Intact animal models are vital to improving our understanding ... -
Automated blood glucose control: Development and Testing of an Artificial Endocrine Pancreas Using a Novel Intravascular Glucose Monitor and a New Approach to Insulin Pharmacology
Skjærvold, Nils Kristian (Doktoravhandlinger ved NTNU, 1503-8181; 2012:275, Doctoral thesis, 2012)This thesis describes the stepwise development and testing of the components of a novel artificial endocrine pancreas, consisting of a continuous glucose monitor, an insulin infusion device and a control algorithm. The ... -
Blood glucose management in the critically ill : perception and clinical practice in the ICU
Bø, Hanne (Master thesis, 2017)Background Contradictory findings from multiple studies on blood glucose management in the ICU and the absence of clear international guidelines leads to varying perceptions and clinical practice among clinicians. ... -
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 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 ... -
Circulatory oscillations in post cardiac surgery patients
Axelsson, Fredrik Einar Tobias; Lio, Bjørn Gardsjord (Master thesis, 2016)The aim of this study was to monitor, analyse and compare circulatory oscillations in blood pressure (BP) and heart rate (HR) in ten patients undergoing elective CABG surgery. The subjects were monitored with continuous ... -
Distortion of complexity in oscillations of arterial blood pressure, due to aging
Orten, Erik Norvald (Master thesis, 2017)Age both influences and limits an individual’s capability to withstand adverse circulatory distress such as sepsis or cardiac events, and is by itself considered a major risk factor for hypertension. The aim of this study ... -
The inflammatory response is related to circulatory failure after out-of-hospital cardiac arrest: A prospective cohort study
Langeland, Halvor Johannes Breivik; Damås, Jan Kristian; Mollnes, Tom Eirik; Ludviksen, Judith K; Ueland, Thor; Michelsen, Annika Elisabet; Løberg, Magnus; Bergum, Daniel; Nordseth, Trond; Skjærvold, Nils Kristian; Klepstad, Pål (Peer reviewed; Journal article, 2021)Background: Whole body ischemia and reperfusion injury after cardiac arrest leads to the massive inflammation clinically manifested in the post-cardiac arrest syndrome. Previous studies on the inflammatory effect on ... -
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 ... -
Postoperativt delirium etter hjertekirurgi
Kleveland, Sigrid Baardsdatter (Master thesis, 2021)Bakgrunn Hvert år gjennomføres det rundt 600 hjertekirurgiske operasjoner ved St. Olavs hospital. Postoperativt delirium er et gjentakende problem, men kartlegging av forekomsten er ikke tidligere gjennomført. Det har ... -
Prelimenary preprocessing of ECG-signals for use in multivariate analysis
Wedeld, Mikael Dyb (Master thesis, 2018)In order to lay the framework for a possible multivariate heart model, a set of methods for preprocessing an electrocardiogram signal has been created. A normalized least mean square adaptive filter was created for filtering ... -
Preprocessing of Arterial Pressure Waves for Later Use in Modeling of Individual Heartbeats
Danielsen, Tina (Master thesis, 2018)Arterial pressure waves (APW) contain essential information, where the different shape of the waveform can indicate illness or essential information. Furthermore, there can be differences between subject independent of ... -
Undersøkelser av forholdet mellom PTT og blodtrykk hos personer eksponert for LBNP
Halgunset, Jørgen (Master thesis, 2022)Måling av kontinuerlig, non-invasiv blodtrykk har vært av stor interesse de siste tiår. En av teknikkene for slik blodtrykksmonitorering er Pulse Transit Time (PTT). PTT er tiden det tar for en arteriell pulsbølge å bevege ... -
Variasjon i bruk av arteriekateter og venekateter i Noreg og Europa
Velle, Martinus (Master thesis, 2017)Bakgrunn: Venekateter og arteriekateter er mykje brukt på intensivpasientar. Særleg bruk av arteriekateter er lite rapportert. Metode: Det er gjennomført ein eindags prevalensstudie på kateterbruk i intensivavdelingar i ... -
Visualisation of limb movements by accelerometers in sedated patients
Harbo Flinstad, Erlend (Master thesis, 2021)Bakgrunn Vurdering av nevrologisk prognose for intensivpasienter er i dag utfordrende. Kliniske undersøkelser og scoringsskjema tas i bruk, der ulike motoriske responser er verdifulle variabler. Sensorer med akselerometer ...