Determinant of left atrial dilation in patients with hypertrophic cardiomyopathy: A real-time 3-dimensional echocardiographic study

被引:35
作者
Bauer, F [1 ]
Shiota, T [1 ]
White, RD [1 ]
Lever, HM [1 ]
Qin, JX [1 ]
Drinko, J [1 ]
Martin, M [1 ]
Tsujino, H [1 ]
Sitges, M [1 ]
Kim, YJ [1 ]
Thomas, JD [1 ]
机构
[1] Cleveland Clin Fdn, Dept Cardiovasc Med, Cleveland, OH 44195 USA
基金
美国国家航空航天局;
关键词
D O I
10.1016/j.echo.2004.05.018
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
To identify the determinants of left atrial (LA) dilation for patients with hypertrophic obstructive cardiomyopathy (HOCM), first we validated LA volume determination by real-time 3-dimensional echocardiography using magnetic resonance imaging in patients. Subsequently, real-time 3-dimensional echocardiography and 2-dimensional Doppler echocardiography were performed in 60 patients with HOCM and in 17 age-matched control subjects. LA volumes and left ventricular (LV) filling pressures were higher for patients with HOCM than in control subjects. By stepwise multilinear regression analysis, LV end-diastolic pressure, resting LV outflow tract pressure gradient, and LV wall thickness were significant determinants of LA dilation. However, tau, -dP/dt, LV stiffness, provokable pressure gradient, and mitral regurgitation did not have any independent relationship with LA volumes. Therefore, it is concluded that LA volume can be accurately determined by real-time 3-dimensional echocardiography; and LA dilation in patients with HOCM is related to LV filling pressure, LV outflow tract pressure gradient, and LV wall thickness.
引用
收藏
页码:968 / 975
页数:8
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