论文部分内容阅读
目的:探讨胎盘植入产前超声诊断的声像图特征,探讨利用超声提高产前、产后对胎盘植入的诊断率,为临床诊断提供依据。方法:选择胎盘植入患者14例,应用超声观察胎盘的位置、子宫肌层之间、子宫浆膜层与膀胱壁浆膜层的完整性及血流分布情况,分析胎盘植入的超声图像特点。结果:超声确诊8例,准确率约57.14%,差异有统计学意义(P<0.05)。确诊病例的超声图像共同特点为胎盘母体面与子宫肌层分界模糊,胎盘后间隙消失;胎盘增厚;胎盘母体面与肌层之间有丰富血供。漏诊4例,漏诊病例超声主要特点为胎盘均较薄、较广但多血窦;1例胎盘位于后壁受胎儿遮挡;2例产后误诊为胎盘残留,超声主要表现为胎盘与子宫肌层分界欠清及血供较丰富。结论:超声诊断产前胎盘植入有一定的声像特点,超声诊断率较低;根据超声图像及临床表现有利于提高胎盘植入产前诊断的准确性。
Objective: To investigate the characteristics of prenatal ultrasound diagnosis of placenta accreta sonography to explore the use of ultrasound to improve prenatal and postnatal diagnosis of placenta accreta, to provide the basis for clinical diagnosis. Methods: Forty patients with placenta accreta were selected. The location of placenta, the integrity of uterine myometrium, serosa of uterus and bladder wall and the distribution of blood flow were observed by ultrasound. The characteristics of placenta accreta . Results: 8 cases were confirmed by ultrasound, the accuracy rate was 57.14%, the difference was statistically significant (P <0.05). Diagnostic cases of ultrasound images common characteristics of the placenta and myometrium surface of the fuzzy boundary between the placenta disappears after the gap; placental thickening; placenta between the mother of the surface and the rich blood supply. Misdiagnosis of 4 cases, the main features of missed diagnosis of ultrasound were placenta are thin, wide but sinus bleeding; 1 case of placenta located in the posterior wall of the fetus obstruction; 2 postpartum misdiagnosed as placental residue, ultrasound mainly for the placenta and myometrium demarcation Less clear and more abundant blood supply. Conclusion: Ultrasound diagnosis of prenatal placenta accreta has a certain sonographic features, low diagnostic rate of ultrasound; according to ultrasound images and clinical manifestations is helpful to improve the accuracy of prenatal diagnosis of placenta accreta.