例1 男,10岁。出生后一个月发现心杂音,气促8年。体检:轻度发绀、杵状指趾,心界不大,胸骨左缘第2肋间闻及Ⅱ级喷射性收缩期杂音,肺动脉第二音不弱,第二心音分裂。心电图:电轴+210°,右心室肥厚。X线胸片、肺血管纹理稍纤细,心胸比值0.5,肺动脉段隆起。二维超声心动图及多普勒超声心动图检查示房间隔缺损,肺 Example 1 male, 10 years old. Heart murmur was found one month after birth and was short-tempered for 8 years. Physical examination: mild cyanosis, clubbing toe, little heart, sternum left margin of the 2nd intercostal smell and Ⅱ jet systolic murmur, pulmonary second sound is not weak, the second heart sound split. ECG: axis + 210 °, right ventricular hypertrophy. X-ray, slightly stenosed pulmonary vascular texture, cardiothoracic ratio 0.5, pulmonary artery segment bulge. Two-dimensional echocardiography and Doppler echocardiography showed atrial septal defect, lung