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目的:探讨应用彩色多普勒超声检测胎儿腹内段脐静脉(FIUV)内径及其血流速度以评价FIUV扩张的临床意义。方法:应用彩色多普勒超声检测115例产前常规超声检查正常和37例产前常规超声检查FIUV扩张的血流情况,测量正常胎儿FIUV内径及其血流速度,测量FIUV扩张胎儿的脐静脉内径及其中24例FIUV血流速度。随访研究对象的预后至妊娠结束。FIUV内径>8 mm为异常。结果:正常组胎儿FIUV内径和FIUV血流速度随着孕龄的增加而递增。FIUV扩张组FIUV内径和FIUV血流速度均明显高于正常组胎儿,差异有统计学意义(P<0.01)。结论:FIUV扩张是高危妊娠的一种征象,可能与胎儿异常及不良妊娠结局有关。
Objective: To investigate the clinical significance of determining the diameter of FIUV and its velocity by color Doppler ultrasonography to evaluate the expansion of FIUV. Methods: The blood flow of FIUV in 115 prenatal routine ultrasound examinations and 37 prenatal routine ultrasound examinations were examined by color Doppler ultrasonography. The diameter and velocity of FIUV in normal fetus were measured, and the umbilical vein ID and 24 cases of FIUV blood flow velocity. Follow-up study of the prognosis until the end of pregnancy. FIUV diameter> 8 mm is abnormal. Results: Fetal diameter of FIUV and FIUV of normal fetus increased with gestational age. The FIUV diameter and FIUV blood flow velocity in FIUV expansion group were significantly higher than those in normal group (P <0.01). Conclusions: FIUV dilatation is a sign of high-risk pregnancy and may be related to fetal abnormalities and adverse pregnancy outcomes.