前置胎盘的超声诊断(附38例分析)

Diagnosis of placenta praevia by ultrasound (analysis of 38 cases)

目的 :探讨B超对前置胎盘的诊断价值及临床意义。方法 :对有完整记载的 38例前置胎盘的病例进行回顾性分析 ,这些患者均由临床医生及助产士提供可疑信息 ,由本科B超室观察胎盘形态学的变化 ,再经产后与胎盘对照研究。结果 :在怀疑为前置胎盘的足月妊娠孕妇中 ,经B超检查 38例诊断为前置胎盘 ,其中中央型前置胎盘 18例 ,占 4 7% ;部分型前置胎盘 14例 ,占 37% ;边缘型前置胎盘 6例 ,占 16 % ;本组病例中未遇到低置型前置胎盘。结论 :临床观察与B超检查是诊断前置胎盘快捷而准确地方法 ,为临床及时采取适当的分娩方式 ,确保母婴平安提供可靠的信息。

Objective:To highlight the knowledge of placenta praevia and to improve the rate of correct diagnosis.5'HZMethods:38 cases of placenta praevia were analyzed retrospectively.Their suspectable information was found by clinical doctors and midwives.Then they observed the placental changes of morphology by B-scan ultrasonography,and diagnosed correctly by checking the placentas after delivery.5'HZResults:All the 38 cases were diagnosed as placenta praevia by B-ultrasound,of which 38 cases were confirmed by clinic.The accuracy rate is 95.5%.Among the 38 cases,18 cases were complete placenta praevia,the accuracy rate is 47%.and 14 cases were partial placenta praevia,the accuracy rate is 37%.6 cases were borderline placenta praevia,the accuracy rate is 16%.There were not low placenta praevia in these cases.Conclusion:5'BZClinical observing and B-ultrasound are both quick and accurate methods to diagnose placenta praevia,because they provide dependable information for doctors to choose proper way of labor so that could ensure mother and infant's safety.