罗×,男,7岁。患儿出生后即出现紫绀,哭闹及活动后紫绀加重,并感心悸、气喘,休息或下蹲后缓解。无昏厥史。检查发育差,唇指发绀。心界不大,无震颤,胸骨左缘2、3肋间Ⅱ—Ⅲ级收缩期吹风性杂音,P_2正常,轻度分裂。肝脾不大,两下肢无浮肿,有杵状指(趾)。心电图窦速,右房、右室肥大。胸部x线片:肺血多,心尖 Luo ×, male, 7 years old. Children born after birth cyanosis, cyanosis after crying and activity increased, and feeling palpitations, asthma, rest or squat relief. No syncope history. Check poorly developed, lip cyanosis. Small heart, no tremor, left sternal border 2,3 intercostal Ⅱ-Ⅲ systolic hair blowing noise, P_2 normal, mild split. Small spleen and liver, two lower extremities without edema, clubbing (toe). Electrocardiogram sinus speed, right atrium, right ventricular hypertrophy. Chest x-ray film: more lung blood, apical