Umbilical artery Doppler waveform notching - Is it a marker for cord and placental abnormalities?

被引:10
作者
Abuhamad, A
Sclater, AJ
Carlson, EJ
Moriarity, RP
Aguiar, MA
机构
[1] Eastern Virginia Med Sch, Dept Obstet & Gynecol, Norfolk, VA 23501 USA
[2] Eastern Virginia Med Sch, Dept Pathol, Norfolk, VA 23501 USA
关键词
cord abnormalities; Doppler imaging; notching; placental abnormalities; umbilical artery;
D O I
10.7863/jum.2002.21.8.857
中图分类号
O42 [声学];
学科分类号
070206 ; 082403 ;
摘要
Objective. To evaluate in a prospective, controlled fashion the prevalence of umbilical artery Doppler waveform notching and its association with cord and placental abnormalities. Methods. During a 6-month period, umbilical artery velocity waveforms were prospectively obtained on 1857 pregnancies at greater than 27 weeks' gestation. All pregnant patients with the presence of a persistent fetal umbilical artery waveform notch formed the study population (cases). Control patients, matched for gestational age, with normal umbilical artery waveforms, were selected for comparison (2 controls per case). After deliver 6 detailed pathologic examination was performed on all umbilical cords and placentas. Results. The presence of an umbilical artery waveform notch was noted in 29 (1.6%) of 1857 pregnancies. Postnatal placental evaluation showed the presence of an accessory placental lobe in 5 (17%) of 29 cases compared with 1 (1.8%) of 54 controls (P = .018). Overall, the presence of an umbilical artery waveform notch was associated with umbilical cord abnormalities in 21 (72%) of 29 cases compared with 8 (14%) of 54 controls (odds ratio, 15; 95% confidence interval, 4.4-54.4). Conclusions. Umbilical artery waveform notching appears to be a strong predictor of cord and placental abnormalities. This finding may have important clinical implications.
引用
收藏
页码:857 / 860
页数:4
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