Browsing NTNU Open by Author "Grenne, Bjørnar"
Now showing items 1-20 of 21
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5 Years of Surgical Aortic Valve Replacement at St. Olavs Hospital – Assessment of Echocardiographic Data, Clinical Outcome and Prevalence of Patient-Prosthesis Mismatch
Eide, Julie Roald; Korpberget, Susanna (Master thesis, 2022)SAMMENDRAG Mål: Denne studien tok sikte på å beskrive pasientpopulasjonen som gjennomgikk åpen hjerteoperasjon med bytte av aortaklaff på St. Olavs Hospital, inkludert pasientkarakteristika, risikofaktorer, samt kliniske ... -
Artificial Intelligence for Automatic Measurement of Left Ventricular Strain in Echocardiography
Salte, Ivar M.; Østvik, Andreas; Smistad, Erik; Melichova, Daniela; Nguyen, Thuy Mi; Karlsen, Sigve; Brunvand, Harald; Haugaa, Kristina H.; Edvardsen, Thor; Løvstakken, Lasse; Grenne, Bjørnar (Journal article; Peer reviewed, 2021)Objectives This study sought to examine if fully automated measurements of global longitudinal strain (GLS) using a novel motion estimation technology based on deep learning and artificial intelligence (AI) are feasible ... -
Cardiac Dysfunction and Arrhythmias 3 Months After Hospitalization for COVID-19
Ingul, Charlotte Ingeborg Björk; Grimsmo, Jostein; Mecinaj, Albulena; Trebinjac, Divna; Nossen, Magnus Berger; Andrup, Simon; Grenne, Bjørnar; Dalen, Håvard; Einvik, Gunnar; Stavem, Knut; Follestad, Turid; Josefsen, Tony Andre; Omland, Torbjørn; Jensen, Torstein (Peer reviewed; Journal article, 2022)Background - The extent of cardiac dysfunction post‐COVID‐19 varies, and there is a lack of data on arrhythmic burden. Methods and Results - This was a combined multicenter prospective cohort study and cross‐sectional ... -
Diagnostic Accuracy and Usability of the ECG247 Smart Heart Sensor Compared to Conventional Holter Technology
Sandberg, Edvard Liljedahl; Grenne, Bjørnar; Berge, Trygve; Grimsmo, Jostein; Atar, Dan; Halvorsen, Sigrun; Fensli, Rune Werner; Jortveit, Jarle (Peer reviewed; Journal article, 2021)Background. Heart rhythm disorders, especially atrial fibrillation (AF), are increasing global health challenges. Conventional diagnostic tools for assessment of rhythm disorders suffer from limited availability, limited ... -
Diagnostic Accuracy of a Novel High-Sensitivity Cardiac Troponin I Assay for Non-ST Elevation Myocardial Infarction
Bjørnøy, Lillian (Master thesis, 2021)Bakgrunn: Ytterligere validering av den diagnostiske ytelsen til det relativt nye Siemens ADVIA Centaur® High-Sensitivity Troponin I (TNIH) immunoassayet kan fremdeles gi nyttig informasjon før eventuell implementering i ... -
Global longitudinal strain is a more reproducible measure of left ventricular function than ejection fraction regardless of echocardiographic training
Karlsen, Sigve; Dahlslett, Thomas; Grenne, Bjørnar; Sjøli, Benthe; Smiseth, Otto A.; Edvardsen, Thor; Brunvand, Harald (Peer reviewed; Journal article, 2019)Background: Left ventricular ejection fraction (LVEF) is an established method for evaluation of left ventricular (LV)systolic function. Global longitudinal strain (GLS) by speckle tracking echocardiography seems to be an ... -
Increased deformation of the left ventricle during exercise test measured by global longitudinal strain can rule out significant coronary artery disease in patients with suspected unstable angina pectoris
Karlsen, Sigve; Melichova, Daniela; Dahlslett, Thomas; Grenne, Bjørnar; Sjøli, Benthe; Smiseth, Otto A.; Edvardsen, Thor; Brunvand, Harald (Peer reviewed; Journal article, 2022)Background Noninvasive identification of significant coronary artery disease (CAD) in patients with unstable angina pectoris (UAP) is challenging. Exercise stress testing has been used for years in patients with suspected ... -
Initial changes in cardiac troponins after resistance training in healthy volunteers
Eriksen, Espen Alexander (Master thesis, 2022)Sammendrag Bakgrunn: Hjertespesifikke troponiner (cTn) er biomarkører for hjertemuskelskader og øker etter hard fysisk aktivitet og utholdenhetstrening, selv blant friske individer. Få studier har undersøkt hvordan ... -
Initial time-course of exercise-induced elevation of cardiac troponins in healthy volunteers
Nguyen, Daniel Khai (Master thesis, 2021)Bakgrunn: Det blir stadig observert høye konsentrasjoner av de hjertespesifikke biomarkørene troponin I og T i tilsynelatende sunne individer etter fysisk aktivitet. De fleste vitenskapelige studiene som ser på dette ... -
Livskvalitet og overlevelse etter TAVI: Langtidsoppfølging av de 150 første pasientene som ble behandlet med TAVI ved St. Olavs hospital.
Hæreid, Olav Wallenius; Skogen, Ståle (Master thesis, 2021)Sammendrag Bakgrunn: Aortastenose er den vanligste behandlingskrevende hjerteklaffsykdommen. Tradisjonelt har man behandlet pasientene med åpen hjertekirurgi. Senere har TAVI (kateterbasert aortaklaffimplantasjon) blitt ... -
Livskvalitet og overlevelse etter TAVI: Langtidsoppfølging av de første 150 pasientene som ble behandlet med TAVI ved St. Olavs hospital
Hæreid, Olav Wallenius; Skogen, Ståle (Master thesis, 2021)Sammendrag Bakgrunn: Aortastenose er den vanligste behandlingskrevende hjerteklaffsykdommen. Tradisjonelt har man behandlet pasientene med åpen hjertekirurgi. Senere har TAVI (kateterbasert aortaklaffimplantasjon) blitt ... -
Myocardial Function Imaging in Echocardiography Using Deep Learning
Østvik, Andreas; Salte, Ivar Mjåland; Smistad, Erik; Nguyen, Thuy Mi; Melichova, Daniela; Brunvand, Harald; Haugaa, Kristina; Edvardsen, Thor; Grenne, Bjørnar; Løvstakken, Lasse (Journal article; Peer reviewed, 2021)Deformation imaging in echocardiography has been shown to have better diagnostic and prognostic value than conventional anatomical measures such as ejection fraction. However, despite clinical availability and demonstrated ... -
Observational study on chest pain during the Covid-19 pandemic: changes and characteristics of visits to a Norwegian emergency department during the lockdown
Grande, Mikkel; Bjørnsen, Lars Petter Bache-Wiig; Næss-Pleym, Lars E.; Laugsand, Lars Erik; Grenne, Bjørnar (Peer reviewed; Journal article, 2022)The Severe Acute Respiratory Syndrome CoronaVirus 2 (SARS-CoV-2) emerged in Wuhan, China in December 2019, and spread rapidly worldwide causing the Coronavirus Disease 2019 (Covid-19) pandemic [1]. Italy was the first ... -
Prognose for hjertestansoverlevere innlagt ved hjertemedisinsk intensiv (HMI), St Olavs hospita, Trondheim
Noren, Kristin Hesland (Master thesis, 2020)BAKGRUNN Hjertemedisinsk intensiv (HMI) ved St. Olavs hospital, Universitetssykehuset i Trondheim behandler en stor andel av pasientene som får hjertestans utenfor sykehus i Midt-Norge. Behandling av hjertestansoverlevere ... -
Quantifying Valve Regurgitation using 3-D Doppler Ultrasound Images and Deep Learning
Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Berg, Erik Andreas Rye; Torp, Hans; Grenne, Bjørnar; Fiorentini, Stefano (Peer reviewed; Journal article, 2022)Accurate quantification of cardiac valve regurgitation jets is fundamental for guiding treatment. Cardiac ultrasound is the preferred diagnostic tool, but current methods for measuring the regurgitant volume (RVol) are ... -
Quantifying Valve Regurgitation Using 3-D Doppler Ultrasound Images and Deep Learning
Wifstad, Sigurd Vangen; Løvstakken, Lasse; Avdal, Jørgen; Berg, Erik Andreas Rye; Torp, Hans; Grenne, Bjørnar; Fiorentini, Stefano (Peer reviewed; Journal article, 2022)Accurate quantification of cardiac valve regurgitation jets is fundamental for guiding treatment. Cardiac ultrasound is the preferred diagnostic tool, but current methods for measuring the regurgitant volume are limited ... -
Real-Time Automatic Ejection Fraction and Foreshortening Detection Using Deep Learning
Smistad, Erik; Salte, Ivar Mjåland; Østvik, Andreas; Melichova, Daniela; Nguyen, Thuy Mi; Haugaa, Kristina; Brunvand, Harald; Edvardsen, Thor; Leclerc, Sarah; Bernard, Olivier; Grenne, Bjørnar; Løvstakken, Lasse (Peer reviewed; Journal article, 2020)Volume and ejection fraction (EF) measurements of the left ventricle (LV) in 2-D echocardiography are associated with a high uncertainty not only due to interobserver variability of the manual measurement, but also due to ... -
Real-Time Echocardiography Guidance for Optimized Apical Standard Views
Pasdeloup, David Francis Pierre; Olaisen, Sindre Hellum; Østvik, Andreas; Sæbø, Sigbjørn; Pettersen, Håkon Neergaard; Holte, Espen; Grenne, Bjørnar; Stølen, Stian Bergseng; Smistad, Erik; Aase, Svein Arne; Dalen, Håvard; Løvstakken, Lasse (Journal article; Peer reviewed, 2022) -
Segmentation of parasternal long axis views using deep learning
Smistad, Erik; Dalen, Håvard; Grenne, Bjørnar; Løvstakken, Lasse (Journal article; Peer reviewed, 2022) -
The Chest Pain Population during Covid-19
Grande, Mikkel (Master thesis, 2021)