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目的 应用超声心动图分析肥厚型心肌病 (hypertrophic cardiomyopathy,HCM)左室流出道压力阶差 (L VOTPG)与左心房 (L A)大小的关系。方法 随机选择肥厚梗阻性心肌病 (HOCM) 4 5例、肥厚型非梗阻性心肌病 (HNOCM) 4 0例、正常人 5 2例 ,分别测量左室流出道 (L VOT)宽度、左室流出道压力阶差(L VOTPG)及左心房的大小。结果 正常对照组 L VOT的宽度 1 8.2 mm,L VOTPG 8.76 mm Hg,L A31 .5 mm;HNOCM组 L VOT的宽度 1 5 .1 8mm,L VOTPG 1 3.1 3mm Hg,L A 39.1 2 mm;HOCM组 L VOT的宽度 9.2 8mm,L VOTPG 38.74 mm Hg,L A 4 3.2 1 mm。结论 HOCM患者 L VOTPG对左房功能的影响较 HNOCM患者大 ,而与正常人相比对左房功能的影响更加明显
Objective To analyze the relationship between left ventricular outflow tract pressure gradient (L VOTPG) and left atrium (L A) size in hypertrophic cardiomyopathy (HCM) by echocardiography. Methods Forty-five patients with hypertrophic obstructive cardiomyopathy (HOCM), 40 hypertrophic non-obstructive cardiomyopathy (HNOCM) and 52 normal individuals were enrolled in this study. The left ventricular outflow tract (L VOT) Road pressure gradient (L VOTPG) and the size of the left atrium. Results In the control group, the width of L VOT was 8.22 mm, L VOTPG 8.76 mm Hg and L A31.5 mm respectively. The width of L VOT in HNOCM group was 1.51 8 mm, L VOTPG 1 3.1 3 mm Hg and LA 39.1 2 mm respectively. L VOT width 9.2 8mm, L VOTPG 38.74 mm Hg, LA 4 3.2 1 mm. Conclusions L VOTPG in HOCM patients has a greater effect on left atrial function than HNOCM patients, while the effect on left atrial function is more obvious than that of normal subjects