Avtor/Urednik		Koželj, M
Naslov		Ehokardiografska študija gibanja trikuspidalnega obroča pri zdravih preiskovancih in pri bonikih s funkcionalno trikuspidalno insuficienco
Tip		monografija
Kraj izdaje		Ljubljana
Založnik		Medicinska fakulteta
Leto izdaje		1993
Obseg		str. 86
Jezik		slo
Abstrakt		Accurate preoperative assessment of tricuspid regurgitation before mitral valve replacement is necessary for favourable postoperative outcome because residual tricuspid regurgitation after mitral valve replacement may increase postoperative morbidity and mortality. In order to evaluate tricuspid regurgitation as adequately as possible, its pathogenesis was focused. Tricuspid regurgitation often appears with mitral valve disease. It occurs when the right ventricle and the tricuspid valve anulus dilate under the increased afterload resulting from elevated pulmonary artery pressures. We were interested in the size, motion pattern and function of the tricuspid anulus and their relation to the severity of tricuspid regurgitation. The tricuspid anulus motion was investigated in normal adults (n=24) and in patients with tricuspid regurgitation due to mitral valve disease (n=44) by two-dimensional echocardiography in four standard echocardiographic views (SAX, I.AX, 4CH, SBX). The anular diameters were measured in ECG triggered two-dimensional stop frame in seven points of the cardiac cycle. The study involved the patients in sinus rhythm and patients in atrial fibrillation. Tricuspid regurgitation was classified semiquantitatively by colour flow Doppler studies as mild, moderate, severe. The motion pattern of the tricuspid anulus was represented in regard to the cardiac rhythm and the severity of tricuspid regurgitation. Atrial contraction accounted for 55.28+10.93 per cent in anular shortening fraction in normal adults, but only for 41.6+-11.84 per cent in patients with sinus rhythm (p less th. 0.01). The smallest anular diameters were observed at the beginning of the T wave in ECG. The greatest anular diameters were reached immediately after the end of the P in ECG (sinus rhythm) or on the onset of the Q wave in patients with atrial fibrillation.(trunc.)
Deskriptorji		TRICUSPID VALVE INSUFFICIENCY ELECTROCARDIOGRAPHY ECHOCARDIOGRAPHY, DOPPLER HEART RATE