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目的研究经腹及经外阴超声在评价妊娠晚期胎盘状态的临床效果,以提高产妇围产期的保健水平。方法对89例中晚期妊娠妇女行经腹超声检查,对提示为胎盘前置的可疑患者,经外阴超声进一步检查胎盘情况,同时进行产时诊断,然后比较两者的临床诊断价值。结果经腹超声检查发现81例中晚期妊娠妇女确诊为胎盘前置患者,其中15例经外阴超声检查及产时诊断均为胎盘位置正常,3例产时诊断为前置胎盘;经腹超声检查8例为可疑胎盘前置患者,再经外阴超声检查以及产时诊断均为胎盘前置,66例经腹超声检查和经外阴超声检查均诊断为前置胎盘,其中有29例胎盘前置患者在妊娠晚期胎盘位置转为正常,其余37例胎盘前置患者持续存在胎盘位置前置状态,并经产时诊断所证实。结论经外阴超声追踪胎盘前置状态的临床效果明显好于经腹部超声,因此经外阴超声是一种简便、安全、可靠的检查方法。
Objective To study the clinical effect of transabdominal and transvaginal ultrasonography in evaluating the status of placenta in the third trimester of pregnancy so as to improve the maternal perinatal health care. Methods Totally 89 pregnant women of middle and late pregnancy underwent transabdominal ultrasonography. The suspicious patients presenting with placenta previa were further examined by genital ultrasonography for placenta, and at the same time the diagnosis of labor was made. Then the clinical diagnostic value of the two methods was compared. Results The results of transabdominal sonography showed that 81 cases of middle and late pregnant women were diagnosed as placenta previa. Among them, 15 cases had normal placenta and 15 cases were diagnosed as placenta accreta by genital ultrasonography and intrapartum diagnosis. Transabdominal ultrasonography 8 cases of suspected placenta previa patients, and then by genital ultrasonography and maternal diagnosis of prenatal placenta previa, 66 cases of transabdominal ultrasonography and transvaginal ultrasonography were diagnosed as placenta previa, of which 29 cases of placenta previa Placenta in the third trimester of pregnancy turned normal, and the remaining 37 cases of placenta previa patients with placenta previa status, confirmed by the time of diagnosis. Conclusion The clinical effect of transvaginal ultrasonography in tracking placenta previa is better than transabdominal ultrasonography. Therefore, transvaginal ultrasonography is a simple, safe and reliable method.