新生儿心脏手术后,因长时间体外循环,术后心肌、肺组织水肿,心脏膨胀。另外新生儿纵隔容积小,关胸时胸骨极易压迫心脏,出现低心排和呼吸窘迫症状。作者回顾性比较一期关胸与延期关胸术后,新生儿血液动力学变化,表明延期关胸是避免术后心脏受压、防止低心排,提高早期生存率的有效措施。 After neonatal cardiac surgery, due to prolonged cardiopulmonary bypass, postoperative myocardial, pulmonary edema, cardiac expansion. In addition, the capacity of the newborn mediastinum is small, easy to oppress the chest when the chest off the heart, low cardiac output and respiratory distress symptoms. The authors retrospectively compared the hemodynamic changes of neonates after the one-stage closure of the thoracic and delayed thoracotomy, demonstrating that the delayed closure of the thorax is an effective measure to prevent postoperative cardiac compression, prevent low cardiac output, and improve the early survival rate.