SONOGRAPHIC ESTIMATION OF UMBILICAL COILING INDEX AND CORRELATION WITH DOPPLER FLOW CHARACTERISTICS
SONOGRAPHIC ESTIMATION OF UMBILICAL COILING INDEX AND CORRELATION WITH DOPPLER FLOW CHARACTERISTICS
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DOI：
10.1016/0029-7844(95)00307-d
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发表时间：
1995-12-01
影响因子：
7.2
通讯作者：
SPIEGEL, D
中科院分区：
文献类型：
--
作者：
DEGANI, S;LEWINSKY, RM;SPIEGEL, D
目的：目的：定量分析胎儿脐血管的卷曲程度，并将卷曲指数与脐血管多普勒血流特征进行相关性研究。脐带卷曲指数的计算方法是产前几个节段脐带血管的超声纵向视图，以及出生后螺旋总数除以脐带长度（厘米）。多普勒血流速度从脐动脉和静脉在每个脐带。血流特征与脐带盘绕指数相关。结果：平均（+/-标准差）脐带盘绕指数在产前为0.44 +/- 0.11，出生后为0.28 +/- 0.08。回归分析显示显著的线性趋势（r = 0.71，P <0.001）。超声螺旋指数与脐动脉多普勒血流特征（平均流速、搏动指数、阻力指数和收缩舒张比）之间的相关性不显著。超声线圈指数与脐静脉的时间平均流速和血流有关。脐静脉血流量与脐带绕丝指数呈直线相关（r = 0.59，P <0.001）。结论：超声可测定胎儿宫内脐带绕丝指数，并与出生时实际指数有较好的相关性。超声脐卷曲指数与脐静脉的多普勒血流特征有关。
Objective: To quantitate umbilical vascular coiling antenatally, and to correlate the coiling index with Doppler flow characteristics in umbilical vessels.Methods: We studied 45 normal term fetuses within 24 hours before delivery. The umbilical coiling index was calculated using sonographic longitudinal views of cord vessels from several segments antenatally, and by dividing the total number of helices by the cord length (in centimeters) postnatally. Doppler flow velocities were obtained from umbilical arteries and vein in each cord. Flow characteristics were correlated with the umbilical coiling index.Results: The mean (+/- standard deviation) umbilical coiling index was 0.44 +/- 0.11 in the antepartum period and 0.28 +/- 0.08 after birth. Regression analysis showed a significant linear trend (r = 0.71, P < .001). The correlations between sonographic coiling index and umbilical arterial Doppler now characteristics (mean velocity, pulsatility index, resistance index, and systolic-diastolic ratio) were not significant. The sonographic coiling index was related to time-averaged velocity and flow in the umbilical vein. A good correlation was found between umbilical vein flow and the coiling index, with a significant linear trend (r = 0.59, P < .001).Conclusion: An intrauterine umbilical coiling index can be determined by ultrasound and correlates well with the actual index at birth. The sonographic umbilical coiling index is related to Doppler now characteristics in the umbilical vein.