超声诊断产后腹直肌分离的初步研究

目的 通过评估健康未生育女性和产后女性的腹直肌间距，探讨高频超声对于诊断产后女性腹直肌分离的可行性。方法 选择150名健康无孕产史女性志愿者（未生育组）及167名产后女性（产后组），使用高频线阵探头分别测量其在平躺状态下脐下3cm、脐部以及脐上3cm处的腹直肌间距。比较3组间3个位置的腹直肌间距。使用未生育组获得腹直肌...

Preliminary study of ultrasound diagnosis of diastasis recti in postpartum women

Objective To investigate the feasibility of high-frequency ultrasound for the diagnosis of diastasis recti in postpartum women by assessing the inter-rectus distance （IRD） in healthy nulliparous woman and postpartum women. Method 150 healthy nulliparous volunteers （nulliparous group） and 167 postpartum women （postpartum group） were included in the study. IRD was measured at the 3 cm below the umbilicus, umbilicus and 3 cm above the umbilicus in a supine position using a high-frequency line array probe. The IRD at three sites between the two groups was compared. The 90^th, 95^th, and 99^th percentiles of normal values of the rectus abdominis spacing obtained in the nulliparous group were used as diagnostic cut-off values for diastasis recti, and the morbidity of postpartum group was observed at different cut-off values. Results In a supine position, the IRD at 3 cm below the umbilicus was 0 （0, 1.00）mm, 11.00（7.00, 16.00）mm at the umbilicus, and 6.00（2.00, 9.00）mm at 3 cm above the umbilicus in the nulliparous group, and 4.00 （0, 12.00） mm, 27.00 （20.00, 33.00）mm and 23.00（17.00, 29.00） mm in the postpartum group, respectively. There was significant difference in the IRD at three sites between two groups （all P < 0.001）. Taking the 90^th, 95^th and 99^th percentiles as the diagnostic cut-off values, the prevalence rates of diastasis recti in the postpartum group were 93.4%, 85.6% and 68.3%, respectively. Conclusion IRD multipoint measurement by high-frequency ultrasound is highly feasible for diagnosing diastasis recti in postpartum women.