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已报道经胸腔高频(7.5MHz)超声心动图可使冠脉左前降支远端显像。本文用此法研究了37例受试者舌下含服硝酸甘油0.4mg前后冠脉直径变化与左室质量的关系。患者分三组,1组24例,为健康者〔男9、女15,年龄14-70(平均43)岁〕;2组10例〔男7、女3,年龄53～88(平均74)岁〕,为非缺血性扩张心肌病患者;3组13例〔男9、女4,年龄27～79(平均48)岁〕,为高血压和须维持血液透析治疗的慢性肾衰患者。所有患者无心绞痛或心肌梗塞史,心电图无异常Q波,超声心动图无室壁运动异常,未用硝酸盐类药或其他扩冠治疗。
It has been reported that trans-thoracic high-frequency (7.5 MHz) echocardiography can make the left anterior descending coronary artery distal imaging. In this paper, 37 subjects were sublingual nitroglycerin before and after 0.4mg coronary diameter changes and the relationship between left ventricular mass. The patients were divided into three groups, one group of 24 patients were healthy (male 9, female 15, age 14-70 (average 43) years old); two groups of 10 patients 〔male 7, female 3, age 53 to 88 (average 74) Year old, non-ischemic dilated cardiomyopathy patients; 13 patients in group 3 [male 9, female 4, age 27-79 (mean 48 years)] were hypertensive patients and patients with chronic renal failure requiring hemodialysis. All patients without history of angina or myocardial infarction, ECG without abnormal Q waves, echocardiography without wall motion abnormalities, no nitrate drugs or other crown treatment.