本文报道18例窒息新生儿QT间期延长，QTc0．489±0．041。对其病因进行探讨，发现本组患儿均有心肌酶同功酶CK－MB增高，低钙血症及颅内出血改变，提示窒息缺氧所致心肌损伤、低血钙及颅内病变在本组患儿QT间期延长中均起一定作用。QT间期延长的危险性在于可诱发尖端扭转型室性心动过速，造成摔死，故此心电图表现应引起重视。积极纠正及去除病因，及时治疗伴随的各种心律失常，监测心电图变化等是治疗的关键。 This article reports 18 cases of asphyxia newborn QT interval prolongation, QTc0.489 ± 0.041. The etiology of the study found that patients with myocardial enzymes in this group were elevated CK-MB, hypocalcemia and intracranial hemorrhage changes, suggesting asphyxia hypoxia-induced myocardial injury, hypocalcemia and intracranial lesions in this group Children with QT prolongation play a role. The risk of prolonged QT interval is induced torsades de pointes ventricular tachycardia, causing the fall, so ECG performance should pay attention. Active correction and removal of the cause, timely treatment of the accompanying arrhythmias, monitoring ECG changes are the key to treatment.