影响超声诊断胎儿脐带绕颈准确度的相关因素探讨研究

Factors affecting accuracy of ultrasound for diagnosing umbilical cord around the neck

目的 探讨研究影响超声诊断胎儿脐带绕颈准确度的相关因素.方法 对880例妊娠孕妇行产前常规超声检查,并与正常分娩以及剖腹产得到的结果对比.结果 超声诊断的阳性符合率为88.0％,阴性符合率为92.9％,总体符合率为91.6％.超声诊断对于3周以上脐带绕颈的绕颈圈数较难确定;胎儿位置、产妇分娩、超声检查相距时间和孕周大小都会对胎儿脐带绕颈的超声诊断准确性产生影响;接受质量控制的患者其诊断准确率为95.6％,而未接受质量控制患者的诊断准确率为85.4％.结论 超声检测中的各项影响因素应当引起足够的重视,在对其充分考虑和应对的基础上,才能提高诊断准确率.

Objective To explore the factors affecting the accuracy of ultrasound for diagnosing umbilical cord around the neck.Methods 880 pregnant women were routinely and prenatally checked with ultrasound.The results of normal childbirth were compared with those of cesarean section.Results The positive coincidence rate of ultrasound was 88.0%,the negative coincidence rate 92.9%,and the total coincidence rate 91.6%.Ultrasound diagnosis was difficult to decide the number of turns of umbilical cord around the neck for more than 3 weeks.Fetal position,puerpera childbirth,time between ultrasound detections,and gestational weeks affected the accuracy of ultrasound for diagnosing fetal umbilical cord around the neck.The diagnostic accuracy was 95.6% in the patients undergoing quality control and was 85.4% in the patients not unergoing quality control.Conclusions The various influencing factors in ultrasound detection should be paid enough attention.These fatctors should be fully considered to incarease the diagnosis accuracy.