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应用超声多普勒方法，对１６例新生儿寒冷损伤综合征患儿的左心输出量及舒张功能进行了动态观察。结果见低体温（≤３２℃）时心输出量显著降低，复温至３５℃时心输出量与正常组间无显著差异，而每搏容量在低温及复温各阶段均无显著变化，提示新生儿寒冷损伤时心输出量降低主要是由于心率下降所致。舒张期功能见经二尖瓣舒张期血流早期峰值（Ｅ）与晚期峰值（Ａ）之比（Ｅ／Ａ值）在复温至３５℃时显著增高，复温至３７℃时又显著降低，提示寒冷损伤时新生儿在体温复至接近正常时有血浆容量的显著增加，此时应注意并发症的出现。
The left ventricular output and diastolic function of 16 neonates with cold injury syndrome were observed by using Doppler echocardiography. The results showed that hypothermia (≤ 32 ℃) when the cardiac output was significantly reduced, rewarmed to 35 ℃ when the cardiac output and no significant difference between the normal group, and stroke volume in the cold and rewarming stages did not change significantly, suggesting The decrease in cardiac output during neonatal cold injury is mainly due to a decrease in heart rate. The diastolic function of mitral diastolic blood flow early peak (E) and late peak (A) ratio (E / A value) was significantly increased when rewarmed to 35 ℃, rewarmed to 37 ℃ significantly reduced , Suggesting that the newborn in the cold injury when the body temperature returned to normal when there is a significant increase in plasma volume, this time should pay attention to the emergence of complications.