Strong T H, Jarles D L, Vega J S, Feldman D B
Phoenix Perinatal Associates, AZ.
Am J Obstet Gynecol. 1994 Jan;170(1 Pt 1):29-32.
Our purpose was to objectively quantitate umbilical vascular coiling.
In this prospective study the umbilical cords and delivery records of 100 consecutive liveborn neonates were studied. The umbilical coiling index of each cord was determined by dividing the total number of complete umbilical vascular coils by the umbilical cord length (in centimeters). The obstetric history, intrapartum fetal heart rate tracing, and pregnancy outcome of each fetus were evaluated without knowledge of the umbilical coiling index.
The mean umbilical coiling index was 0.21 +/- 0.07 (SD) coils per centimeter. The 100 values were normally distributed. Among those whose umbilical coiling index values fell < or = 10th percentile, there was a significantly greater incidence of karyotypic abnormalities (p = 0.04), meconium staining (p = 0.03), and operative intervention for fetal distress (p = 0.03). There was a significantly greater incidence of moderate or severe variable fetal heart rate decelerations for those whose umbilical coiling index value was either < or = 10th percentile (0.1 coils per centimeter) or > 90th percentile (0.3 coils per centimeter) (p = 0.03).
The umbilical coiling index may have utility for objectively describing the degree of umbilical vascular coiling.
我们的目的是客观地定量脐血管盘绕情况。
在这项前瞻性研究中，对100例连续活产新生儿的脐带及分娩记录进行了研究。每条脐带的脐盘绕指数通过将脐血管完整盘绕的总数除以脐带长度（以厘米为单位）来确定。在不知道脐盘绕指数的情况下，对每个胎儿的产科病史、产时胎儿心率监测及妊娠结局进行评估。
平均脐盘绕指数为每厘米0.21±0.07（标准差）个盘绕。这100个数值呈正态分布。在脐盘绕指数值处于≤第10百分位数的人群中，染色体核型异常（p = 0.04）、胎粪污染（p = 0.03）及因胎儿窘迫进行手术干预（p = 0.03）的发生率显著更高。脐盘绕指数值≤第10百分位数（每厘米0.1个盘绕）或＞第90百分位数（每厘米0.3个盘绕）的人群中，中度或重度可变胎儿心率减速的发生率显著更高（p = 0.03）。
脐盘绕指数可能有助于客观描述脐血管盘绕程度。
