Patterns of Doppler-measured blood flow velocity in the normal and fibrillating human left atrial appendage

被引:34
作者
Fatkin, D
Feneley, MP
机构
[1] ST VINCENTS HOSP,DEPT CARDIOL,DARLINGHURST,NSW 2010,AUSTRALIA
[2] ST VINCENTS HOSP,VICTOR CHANG CARDIAC RES INST,DARLINGHURST,NSW 2010,AUSTRALIA
基金
英国医学研究理事会;
关键词
D O I
10.1016/S0002-8703(96)90012-5
中图分类号
R5 [内科学];
学科分类号
1002 [临床医学]; 100201 [内科学];
摘要
Doppler measurement of left atrial appendage (LAA) blood velocity during transesophageal echocardiography has been proposed as a method of assessing LAA contractile function and thromboembolic risk. Clinical and echocardiographic determinants of five LAA Doppler blood velocity patterns were examined in 40 patients with a history of atrial fibrillation (AF), In 10 control subjects, and in 5 patients aged less than or equal to 60 years having sinus rhythm and left ventricular hypertrophy. In sinus rhythm, two blood velocity patterns were differentiated by the extent of passive emptying of the LAA, which was related to age and left ventricular early diastolic filling properties. In AF, three blood velocity patterns were differentiated by the relative preservation of LAA mechanical function during fibrillatory activity. LAA contractile function is an important but not the sole determinant of blood flow in the normal and fibrillating human LAA.
引用
收藏
页码:995 / 1003
页数:9
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