Browsing NTNU Open by Author "Haaverstad, Rune"
Now showing items 1-9 of 9
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Finite element analysis of mitral valve annuloplasty in Barlow's disease
Aguilera, Hans Martin; Urheim, Stig; Persson, Robert; Haaverstad, Rune; Skallerud, Bjørn Helge; Prot, Victorien Emile (Peer reviewed; Journal article, 2022)Barlow’s Disease affects the entire mitral valve apparatus causing mitral regurgitation. Standard annuloplasty procedures lead to an average of 55% annular area reduction of the end diastolic pre-operative annular area in ... -
Genome-Wide Profile of Pleural Mesothelioma versus Parietal and Visceral Pleura: The emerging Gene Portrait of the Mesothelioma Phenotype
Røe, Oluf Dimitri; Anderssen, Endre; Helge, Eli; Pettersen, Caroline Hild; Olsen, Karina Standahl; Sandeck, H; Haaverstad, Rune; Lundgren, Steinar; Larsson, Erik (Journal article; Peer reviewed, 2009) -
Human cardiomyocyte calcium handling and transverse tubules in mid-stage of post-myocardial-infarction heart failure
Høydal, Morten; Karevold, Asbjørn; Garstad, Idar Kirkeby; Wiseth, Rune; Haaverstad, Rune; Stølen, Tomas; Contu, Riccardo; Condorelli, Gianluigi; Ellingsen, Øyvind; Smith, Godfrey L; Kemi, Ole J; Wisløff, Ulrik (Journal article; Peer reviewed, 2018)Aims Cellular processes in the heart rely mainly on studies from experimental animal models or explanted hearts from patients with terminal end‐stage heart failure (HF). To address this limitation, we provide data on ... -
The importance of concomitant mitral regurgitation for estimates of mitral valve area by pressure half time in patients with chronic rheumatic heart disease
Hauge, Ståle Wågen; Estensen, Mette-Elise; Persson, Robert; Abebe, Sintayehu; Mekonnen, Desalew; Nega, Berhanu; Solholm, Atle; Graven, Torbjørn; Salvesen, Øyvind Olav; Farstad, Marit; Vikenes, Kjell; Haaverstad, Rune; Dalen, Håvard (Peer reviewed; Journal article, 2023)Aims Aim was to study how concomitant mitral regurgitation (MR) assessed by qualitative and quantitative methods influence mitral valve area (MVA) calculations by the pressure half time method (MVAPHT) compared to ... -
In silico analysis provides insights for patient-specific annuloplasty in Barlow's disease
Aguilera, Hans Martin Dahl; Persson, Robert; Haaverstad, Rune; Skallerud, Bjørn Helge; Prot, Victorien Emile; Urheim, Stig (Peer reviewed; Journal article, 2023)Objective To predict the required mitral annular area reduction in patients with Barlow's disease to obtain a predefined leaflet area index by a novel in silico modeling method. Methods Three-dimensional echocardiography ... -
Mechanical behavior and collagen structure of degenerative mitral valve leaflets and a finite element model of primary mitral regurgitation
Sadeghinia, Mohammadjavad; Aguilera, Hans Martin Dahl; Urheim, Stig; Persson, Robert; Ellensen, Vegard Skalstad; Haaverstad, Rune; Holzapfel, Gerhard; Skallerud, Bjørn Helge; Prot, Victorien Emile (Peer reviewed; Journal article, 2023)Degenerative mitral valve disease is the main cause of primary mitral regurgitation with two phenotypes: fibroelastic deficiency (FED) often with localized myxomatous degeneration and diffuse myxomatous degeneration or ... -
Mitral annular dynamics are influenced by left ventricular load and contractility in an acute animal model
Persson, Robert Matongo; Aguilera, Hans Martin Dahl; Kvitting, Jon Peder Escobar; Grong, Ketil; Prot, Victorien Emile; Salminen, Pirjo-Riitta; Svenheim, Bård; Leiknes, Anita; Stangeland, Lodve; Haaverstad, Rune; Urheim, Stig (Peer reviewed; Journal article, 2023)The purpose of this study was to investigate the effects of loading conditions and left ventricular (LV) contractility on mitral annular dynamics. In 10 anesthetized pigs, eight piezoelectric transducers were implanted ... -
Quantified planar collagen distribution in healthy and degenerative mitral valve: biomechanical and clinical implications
Sadeghinia, Mohammad Javad; Persson, Robert; Ellensen, Vegard Skalstad; Haaverstad, Rune; Holzapfel, Gerhard; Skallerud, Bjørn Helge; Prot, Victorien Emile; Urheim, Stig (Journal article; Peer reviewed, 2024)Degenerative mitral valve disease is a common valvular disease with two arguably distinct phenotypes: fibroelastic deficiency and Barlow’s disease. These phenotypes significantly alter the microstructures of the leaflets, ... -
Short-term outcome after open-heart surgery for severe chronic rheumatic heart disease in a low-income country, with comparison with an historical control group: An observational study
Hauge, Ståle Wågen; Dalen, Havard; Estensen, Mette-Elise; Persson, Robert Matongo; Abebe, Sintayehu; Mekonnen, Desalew; Nega, Berhanu; Solholm, Atle; Farstad, Marit; Bogale, Nigussie; Graven, Torbjorn; Nielssen, Niels-Erik; Brekke, Hege Kristin; Vikenes, Kjell; Haaverstad, Rune (Peer reviewed; Journal article, 2021)Objectives Rheumatic heart disease (RHD) is a major burden in low-income and middle-income countries (LMICs). Cardiac surgery is the only curative treatment. Little is known about patients with severe chronic RHD operated ...