E25 Left atrial systolic function in patients with volume or pressure overload: Effect of isometric exercise
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چکیده
منابع مشابه
Left atrial and left atrial appendage systolic function in patients with post-myocardial distal blocks
INTRODUCTION The study aimed to evaluate function of the left atrium (LA) and of the left atrial appendage (LAA) after myocardial infarction (MI) complicated by intracardiac conduction disturbances. MATERIAL AND METHODS The study comprised 59 patients with persistent post-myocardial distal blocks, who were allocated to one of the three following subgroups: study group I - 20 patients with lef...
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The effect of the pericardium on the end-systolic pressure-segment length relationship in the left ventricle was examined with an ultrasonic miniature gauge in open-chest dogs. In 12 dogs, blood was infused until left ventricular (LV) end-diastolic pressure reached about 20 mm Hg, and then the pericardium was opened widely. In the other 12 dogs a pericardiectomy was performed without blood infu...
متن کاملR-wave amplitude changes during exercise in adolescents with left ventricular pressure and volume overload.
To determine the diagnostic value of exerciseinduced R-wave changes in adolescents with congenital heart disease, the responses of 50 adolescents without significant heart disease were compared with those of 72 patients with either a left v~r~ular (LV) pressure or volume overload lesion. Among the pressure overload group, 24 patients had valvular aortic stenosis (AS) and 27 had coarctation of t...
متن کاملDeterminants of Left Atrial Volume in Patients with Atrial Fibrillation
INTRODUCTION Left atrial (LA) enlargement is an important risk factor for incident stroke and a key determinant for the success of rhythm control strategies in patients with atrial fibrillation (AF). However, factors associated with LA volume in AF patients remain poorly understood. METHODS Patients with paroxysmal or persistent AF were enrolled in this study. Real time 3-D echocardiography w...
متن کاملXanthine oxidase inhibition preserves left ventricular systolic but not diastolic function in cardiac volume overload.
Xanthine oxidase (XO) is increased in human and rat left ventricular (LV) myocytes with volume overload (VO) of mitral regurgitation and aortocaval fistula (ACF). In the setting of increased ATP demand, XO-mediated ROS can decrease mitochondrial respiration and contractile function. Thus, we tested the hypothesis that XO inhibition improves cardiomyocyte bioenergetics and LV function in chronic...
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ژورنال
عنوان ژورنال: American Journal of Hypertension
سال: 1997
ISSN: 0895-7061
DOI: 10.1016/s0895-7061(97)88812-7