Analysis on signs and diagnostic value of transabdominal ultrasound of pregnant women with placenta accreta / 中国基层医药

ABSTRACT

Objective:To investigate the signs and diagnostic value of transabdominal ultrasound of pregnant women with placenta accreta.Methods:The clinical data of 140 pregnant women with placenta previa who received regular prenatal examination between August 2015 and August 2019 in Lishui City People's Hospital were retrospectively analyzed. Clinical and pathological results were used as the gold standard for clinical diagnosis of placenta accreta. The sensitivity, specificity and accuracy of transabdominal ultrasound in the diagnosis of placenta accreta were evaluated. The included 140 women were divided into observation (75 women with placenta previa complicated by placenta accreta) and control (65 women with placenta previa not complicated by placenta accreta) groups. The difference in ultrasonic signs was compared between the two groups.Results:The sensitivity, specificity and accuracy of transabdominal ultrasound in the diagnosis of placenta accreta were 93.33% (70/75), 93.84% (61/65) and 93.57% (131/140), respectively. The incidences of placental thickening, disappearance of retroplacental space, uneven echo in placenta, abundant blood vessels at the interface between uterine serosa and bladder, and focal or extensive intraplacental blood flow in the observation group were 92.00% (69/75), 52.00% (39/75), 82.66% (62/75), 60.00% (45/75) and 50.66% (38/75), respectively, which were significantly higher than those in the control group [32.30% (21/65), 29.23% (19/65), 30.76% (20/65), 35.38% (23/65), 27.69% (18/65), χ2 = 54.041, 7.439, 38.650, 8.446 and 7.658, all P < 0.05]. The score of ultrasonic sign in the observation group was significantly higher than that in the control group ( Z = 10.656, P < 0.05). Conclusion:Transabdominal ultrasound examination can provide information to help screen placenta accreta in patients with placenta previa. Transabdominal ultrasound is of great significance for clinical diagnosis of placenta accreta.