Clinical significance of ultrasonic scanning in detecting umbilical abnormality and measuring notch depth of nuchal cord entanglement / 中华全科医师杂志

ABSTRACT

Type B ultrasonic scanning was performed routinely for 10 944 pregnant women at their third semester when they visited outpatient department or were admitted to our hospital during January 2004 to December 2008, and their fetal heart rate, amniotic fluid, umbilical cord and neonate conditions were monitored and recorded during delivery. The sensitivity and specificity of type B ultrasonic were 95.74% (3301/3448) and 96. 25 % (7215/7496). Umbilical abnormality was diagnosed in 3448 pregnancies by type B ultrasonic scanning, with prevalence of 31.51%, cesarean section was performed in 44.00 %, fetal distress occurred in 18. 27% of them, 15.46% of them with Apgar score equal to or less than seven, and fetal death occurred in 2. 41% of them, all significantly higher than those in pregnant women without umbilical abnormal (23. 77%, 8. 56%, 7.84% and 1.36%, respectively, all P ＜0. 01 ). Cesarean section was performed in 41.90 % of those with 0. 8 cm or more in the notch depth of nuchal cord entanglement,fetal distress occurred in 29.76% of them, 25.30% of them with Apgar score equal to or less than seven and fetal death occurred in 4. 05% of them, all significantly higher than those in pregnant women with the notch depth less than 0. 8 cm (20. 22%, 8. 60%, 9. 26% and 0. 54%, respectively, all P ＜0. 01 ). Type B ultrasonic scanning plays an important role in clinical diagnosis for umbilical abnormality, guiding selection of delivery method and improving neonatal prognosis.