患儿男,胎龄39周顺产,出生体重3000 g,无窒息。因胎儿期心脏B超提示血管环(右位主动脉弓,左位动脉导管,左锁骨下动脉起自动脉导管)收入新生儿监护室。生后第1天心脏B超:血管环;轻度主动脉缩窄;动脉导管未闭;房间隔缺损。于生后第2天出现一过性口周及四肢末梢青紫,暖箱内供氧后好转。头罩吸氧下第7天脉搏氧饱和度降至75%~85%,肤色苍白,呼吸急促,肝肋下2 cm,足 Children, male, gestational age 39 weeks of birth, birth weight 3000 g, no asphyxia. Due to fetal heart ultrasound B-Tip vascular ring (right aortic arch, left ductus arteriosus, left subclavian artery from the catheter) income neonatal care unit. 1 day after birth heart B ultrasound: vascular ring; mild aortic constriction; patent ductus arteriosus; atrial septal defect. On the second day after birth, there appeared a transient oral and peripheral extremity bruising, the oxygen in the warm box improved. On the seventh day after oxygenation, the oxygen saturation of the pulse hood dropped to 75% ~ 85% on day 7, pale skin, shortness of breath, 2 cm under the liver ribs