超声扫查晚孕期胎儿动脉导管形态改变的临床意义

Clinic meaning of ultrasonography in exploring curvature changing of fetal ductus arteriosus during late pregnancy

目的探讨超声扫查晚孕期胎儿单纯性动脉导管形态改变的临床意义。方法 23例晚孕期孕妇超声诊断为单纯性动脉导管迂曲的胎儿,使用心脏多切面扫查方式观察动脉导管的形态,测量动脉导管的内径,出生后随访2~3个月。结果 23例单纯性动脉导管迂曲的胎儿,其中11例动脉导管轻度弯曲呈＂C＂形,内径均匀;5例明显弯曲呈＂S＂形,内径均匀;另7例明显弯曲呈＂S＂形,内径不均,局部扩张形成动脉瘤。所有胎儿产后动脉导管均正常闭合,心脏结构和功能未见异常。结论胎儿动脉导管迂曲显著者可局部扩张形成动脉导管瘤;单纯性动脉导管迂曲但无心脏其他异常时可能不影响胎儿的预后。

Objective To explore the clinic meaning of ultrasonography in detecting curvature changing of ductus arteriosus （DA） during late pregnancy. Methods Twenty-three fetuses were diagnosed as simple DA curvature during late pregnancy by ultrasonnography. The morphology of DA was observed and the inner diameter of DA was measured. All fetuses were followed up for 2~3 months after birth. Results Eleven cases of 23 fetuses with simple DA curvature were mildly curved in＂C＂form, and the inner diameter of blood vassel was normal. Five cases of them was markedly curved in＂S＂form, and the inner diameter of blood vassel was normal. Seven cases of them with ductus arteriosus aneurysm were seen. DA of 23 fetuses closed normally after birth, and cardiac structure and function were normal. Conclusion Significant local expansion of DA may form aneurysm. The fetal prognosis was possibly not affected when the curvature changing of DA was simple without other cardiac abnormalities.