Search for dissertations about: "atrial function"

Showing result 16 - 20 of 105 swedish dissertations containing the words atrial function.

2. 16. Mechanical and histological disturbances in advanced heart failure and cardiac transplantation

   Author : Matteo Cameli; Michael Henein; Guy Lloyd; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Advanced heart failure; heart transplantation; speckle tracking echocardiography; left ventricular function; right ventricular function; left ventricular fibrosis; left ventricular filling pressure; atrial strain; kariologi; Cariology;

   Abstract : The general purpose of this thesis is to establish capability and accuracy of speckle tracking echocardiography (STE) in assessing left atrial (LA), left ventricular (LV) and right ventricular (RV) function and their correlation with myocardial fibrosis, filling pressure and clinical outcomes in advanced heart failure (HF) patients before and after heart transplantation (HT).I demonstrated that HT recipients had impaired LV twist dynamics in the form of reduced rotation twist angle and untwist rate but time to peak twist was not different from the age matched controls and other cardiac surgical patients. READ MORE

4. 17. Left Ventricular Function in Elderly Men : Metabolic, Hormonal, Genetic and Prognostic Implications

   Author : Johan Ärnlöv; Anders Waldenström; Uppsala universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Medicine; echocardiography; heart failure; left ventricular function; genetics; mortality; insulin sensitivity; natriuretic peptides; Medicin; Dermatology and venerology; clinical genetics; internal medicine; Dermatologi och venerologi; klinisk genetik; invärtesmedicin; Geriatrics; geriatrik;

   Abstract : Heart failure and left ventricular dysfunction are major causes of morbidity and mortality. In this thesis, metabolic, hormonal, genetic and prognostic aspects of echocardiographically determined left ventricular function were investigated in a fairly large longitudinal population-based study of men. READ MORE

5. 18. Strain echocardiography in cardiac surgery - studies on the effects of loading conditions and inotropic agents on myocardial contraction and relaxation

   Author : Martin Fredholm; Göteborgs universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; strain echocardiography; right heart catheterization; cardiac surgery; heart failure; levosimendan; milrinone; left ventricular function; right ventricular function; systole; diastole; preload; afterload; pacing; longitudinal function; ventricular dimensions; ventricular interdependence;

   Abstract : Background: Although reductions in myocardial contractility and relaxation are key compo-nents in heart failure (HF), assessment of them is difficult, as clinical measurements deal with a net effect of myocardial contractility, heart filling (preload), outflow impedance (afterload) and heart rate (HR). Echocardiographic (echo) deformation parameters, like strain (myocardial shortening) and strain rate (the speed of deformation, SR), have been proposed to more accu-rately measure myocardial function, but incongruent previous studies have raised concerns that they may be load-dependent. READ MORE

6. 19. Young children with atrial septal defect

   Author : Gustaf Tanghöj; Estelle Naumburg; Petru Liuba; Gunnar Sjöberg; Henrik Holmström; Umeå universitet; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; atrial septal defect; preterm infants; adverse event; heart surgery; incidence; risk factors; kardiologi; Cardiology;

   Abstract : Background: Secundum atrial septal defect (ASD II), situated within the fossa ovalis, is the third most common congenital heart defect and even more common among preterm children. Spontaneous closure usually occurs during the first year of life. Most children with an ASD II remain asymptomatic during early childhood. READ MORE

7. 20. Right ventricular volume load and function in congenital heart defects

   Author : Sigurdur Sverrir Stephensen; Lund Klinisk fysiologi; []
   Keywords : MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; MEDICIN OCH HÄLSOVETENSKAP; MEDICAL AND HEALTH SCIENCES; Congenital heart defect CHD ; Right ventricular function; Tetralogy of Fallot; Atrial septal defect; Cardiac Pumping;

   Abstract : .... READ MORE