例1.男,5个月。因受凉后突然呼吸困难,发绀2天,伴轻咳,不发热,以毛细支气管炎收入院。体验:神清,呻吟,呼吸困难,心率160次/分,杂音不明显。双肺呼吸音粗,肝肋下2cm。血白细胞13.2×10~9 L,胸片未见异常。入院后仍考虑为毛细支气管炎,给予对症治疗,1小时后缓解。次日凌晨又复发,抢救无效死亡。尸检报告:法乐氏四联症。例2.女,6个月。因突然呼吸困难,阵发性发绀,起病原因不明,以肺炎收入院。体检:营养不良Ⅰ°,面发绀,指、趾端更甚。呼吸45次/分,心率160次/分,胸骨左缘第3、4肋间可闻及Ⅱ级收缩期杂音,肺动脉第Ⅱ音减弱。两肺呼吸音粗,肝肋下2cm,四肢 Example 1. Male, 5 months. Suddenly breathing difficulties due to cold, cyanosis 2 days, with light cough, no fever, capillary bronchitis income hospital. Experience: God, moaning, breathing difficulties, heart rate 160 beats / min, murmur is not obvious. Breath sounds coarse lungs, liver ribs 2cm. Blood leukocytes 13.2 × 10 ~ 9 L, no abnormal chest X-ray. After admission is still considered for bronchiolitis, given symptomatic treatment, 1 hour after the relief. The next morning again relapse, rescue invalid death. Autopsy report: tetralogy of Fallot. Example 2. Female, 6 months. Because of sudden breathing difficulties, paroxysmal cyanosis, the cause of unknown origin, to pneumonia income homes. Physical examination: malnutrition Ⅰ °, face cyanosis, fingers, toe more even. Breathing 45 beats / min, heart rate 160 beats / min, the 3rd and 4th intercostal sternum can be heard on the left edge and Ⅱ systolic murmur, pulmonary artery tone Ⅱ weakened. Breath sound coarse two lungs, liver ribs 2cm, limbs