نتایج جستجو برای: isolated aortic regurgitation
تعداد نتایج: 446631 فیلتر نتایج به سال:
Case Sometimes it is difficult to diagnose circumferential aortic dissection with enhanced computed tomography alone. A 58-year-old woman presented with sudden-onset chest discomfort and loss of consciousness. Transthoracic echocardiogram showed mild aortic regurgitation. Enhanced computed tomography scans showed no obvious intimal tear or flap at the proximal ascending aorta, but an intimal fl...
AIMS Aortic regurgitation after transcatheter aortic valve implantation (TAVI) is one of the most frequent complications. However, the underlying mechanisms of this complication remain unclear. The present evaluation studied the anatomic and morphological features of the aortic valve annulus that may predict aortic regurgitation after TAVI. METHODS AND RESULTS In 53 patients with severe aorti...
Background Transcatheter Aortic Valve Implantation (TAVI) is increasingly used to treat patients with severe aortic stenosis at high surgical risk. The severity of post-implantation valvular or paravalvular regurgitation has been shown to adversely affect patient outcome. The aim of the study was to assess the prevalence and severity of aortic regurgitation (AR) at 6 months post-TAVI using card...
Aortic regurgitation is occasionally caused by fibrous strands and more rarely by downward displacement of the aortic annulus. The present report describes an 18-year-old man with aortic regurgitation resulting from an anterior-posterior type of bicuspid aortic valve with fibrous strands and downward displacement of the anterior aortic annulus. A pair of fibrous strands at the anterior cusp of ...
....................................................................................................... 1 POPULÄRVETENSKAPLIG SAMMANFATTNING ................................. 3 LIST OF ORIGINAL PAPERS ........................................................................ 5 ABBREVIATIONS ............................................................................................. 6 INTRODUCTIO...
Fifty patients with aortic and/or mitral regurgitation underwent gated pool imaging and cardiac catheterisation to quantify the severity of valvar regurgitation. Gated pool imaging was performed in the left anterior oblique projection and an estimate of regurgitant fraction derived by comparison of the left ventricular to right ventricular stroke volume expressed as a ratio. In 17 normal subjec...
Echocardiographic (echo) measurements of left ventricular ejection phase indices--ejection fraction, percent shortening of the minor diameter (%deltaD), and velocity of circumferential fiber shortening (Vcf)--are said to be accurate reflections of their angiographic (angio) counterparts. Most studies correlating echo and angio left ventricular function parameters have included relatively few pa...
RATIONALE Doppler echocardiography has been demonstrated to be accurate in diagnosing valvular lesions in rheumatic heart disease (RHD) when compared to clinical evaluation alone. OBJECTIVE To perform Doppler echocardiography in children clinically diagnosed by the Jones criteria to have acute rheumatic fever (ARF), and to then compare the effectiveness of echo in detecting single/multi-valvu...
In 43 patients left ventricular micromanometry and cineangiography were performed preoperatively and and 20 months after aortic valve replacement. A score of left ventricular functional impairment, derived from 5 to 8 haemodynamic variables, was calculated as: number of pathological indices x 100/total number of determined indices. Preoperatively the score of left ventricular functional impairm...
(2) Is the risk of proximal dissection high enough to warrant prophylactic repair before clinically significant aortic insufficiency occurs? (3) If surgery is not warranted now, what indication should be used to determine appropriate timing of surgery (ie, aortic regurgitation by clinical examination, symptomatic aortic regurgitation, signs of congestive heart failure)? (4) How common is a type...
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