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在1973—1974年普查慢性支气管炎、肺气肿、肺心病中,我们曾证明剑突下心音增强与心电图上的心房波改变、右室肥厚及X线胸片上的右下肺动脉干宽径增大相关,对判断肺心病具有实用价值。1977年全国第二次肺心病专业会议将剑突下左侧心音较心尖部明显增强纳入慢性肺原性心脏病基层诊断参考条件的第三项。本文就心音图描记的资料进行分析,并进
In the 1973-1974 census of chronic bronchitis, emphysema, pulmonary heart disease, we have demonstrated that the enhanced phonocardiogram and ECG on the atrial wave changes, right ventricular hypertrophy and right chest X-ray on the right lower pulmonary artery Large related to the judgment of pulmonary heart disease has practical value. In 1977 the country’s second conference of pulmonary heart disease will be the left side of the xiphoid than the apical constriction was significantly enhanced into the basic reference for diagnosis of chronic pulmonary heart disease third reference conditions. In this paper, phonocardiogram data analysis, and progress