Umbilical Cord Coiling Index at Term Gestation and Its Association with Perinatal Outcomes
Keywords:Umbilical cord coiling index (UCI) Hypercoiling umbilical cord, Hypocoiling umbilical cord, Fetal distress, Perinatal outcome, IUGR.
Background: Umbilical coiling index (UCI) is the number of coils in the cord divided by the cord
length in centimeters. .On the basis of UCI umbilical cords have been grouped as: hypocoiled,( UCI
Less than 10th percentile ) normocoiled ( UCI between 10th–90th percentile) and hypercoiled (UCI
More than 90th percentile).
Various reports have shown that abnormal coiling index is associated with
adverse perinatal outcomes.There is a wide variations among the various studies done so far. Some
studies have reported significant association between abnormal UCI and adverse perinatal outcomes
whereas few studies did not show significant association. Material & Methods: This prospective study
was conducted on 200 randomly selected Indian pregnant women with singleton pregnancy at POG 37
weeks.The UCI less than 10th percentile and more than 90th percentile were considered as hypocoiled
and hypercoiled respectively Then association between abnormal UCI and intrapartum events (fetal
heart rate (FHR) abnormality, meconium stained liquor, mode of delivery )and neonatal outcome ( birth
weight, IUGR,Apgar score and need for NICU admission ) were evaluated. Results & Conclusion The
mean UCI was 0.21 0.08 coils /cms. (9.50%) coils were hypocoiled 81%) were, normocoiled and
hypercoiled were (9.50%). No statistically significant association was found between abnormal coiling
and perinatal outcomes
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