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患儿男性，９岁，生后６月左右出现哭闹后口唇发绀，２岁开始出现蹲踞现象，今来我院就诊以明确诊断。体检：口唇略发绀，杵状指，胸骨左缘三、四肋间闻及Ⅲ～Ⅳ／Ⅵ级收缩期杂音，Ｐ２不亢进，胸骨左缘第二肋间闻及粗糙连续性杂音。心电图示：１．窦性心律，２．右室肥大。超
Children with children, 9 years old, about 6 months after birth crying lips cyanosis, 2-year-old began to squat phenomenon, now come to our hospital to confirm the diagnosis. Physical examination: slightly cyanotic lips, clubbing refers to the left border of sternal three or four intercostal smell and Ⅲ ~ Ⅳ / Ⅵ systolic murmur, P2 is not hyperthyroidism, the second intercostal sternal left intercostal smell and rough continuous murmur. ECG shows: 1. Sinus rhythm, 2. Right ventricular hypertrophy. ultra