先天性心脏病是严重威胁婴幼儿健康的重大出生缺陷疾病。目前较简单的心脏畸形,外科手术治愈率高、并发症少,治疗费用可为大多数家庭接受。然而对于婴幼儿重症先心病,其心脏畸形复杂,或所患心内畸形简单却合并了严重的肺血管损害,这些患儿得到手术治疗并顺利渡过围术期的机会大为下降,手术死亡率高,术后血流动力学不稳定,肺 Congenital heart disease is a major birth defect that seriously threatens the health of infants and children. At present, simpler cardiac malformations, high surgical cure rates, fewer complications, and treatment costs are accepted by most families. However, for infants and children with severe congenital heart disease, the heart malformations complicated, or suffer from simple heart malformations but combined with severe pulmonary vascular damage, these children were surgically treated and go through the perioperative period greatly reduced the chance of death High rate, postoperative hemodynamic instability, lung