title: Association of umbilical coiling index by colour Doppler ultrasonography at 18-22 weeks of gestation and perinatal outcome.
abstract: OBJECTIVE
  To study the association between antenatal umbilical coiling index (aUCI) and perinatal outcome.
  
  
  METHODS
  600 primigravidas with uncomplicated singleton pregnancies had an ultrasonography between 18 and 22 weeks of gestation for aUCI by colour Doppler. The aUCI was calculated as the reciprocal of the distance between a pair of coils. It was then correlated with the following pregnancy outcomes: birth weight, mode of delivery, meconium staining of liquor, Apgar scores and gestational age. The results were statistically analysed by χ(2)-test.
  
  
  RESULTS
  The mean aUCI was 0.41. Undercoiling was associated with spontaneous preterm delivery (47.87 %), low Apgar score (52.13 %), LBW (52.59 %), FGR (21.28 %) and NICU admission (76.34 %). Overcoiling was associated with preterm deliveries (65.38 %), increased caesarean sections (61.54 %), meconium staining of liquor (67.31 %), low Apgar score (63.46 %) and NICU admission (72.55 %). There was a positive strong correlation between aUCI and birth weight (r = +0.426).
  
  
  CONCLUSIONS
  Abnormal coiling is strongly correlated with low birth weight.
authors.affiliation: Department of Obstetrics and Gynaecology, Zenana Hospital, S.M.S. Medical College, Jaipur, 302012 Rajasthan India ; 12, Hardutt Rai Chamaria Road, Near Howrah A.C. Market, Shree Shyam Gardens, Flat-9D, 9th Floor, Howrah, 711107 West Bengal India.
authors.forename: Bindu
authors.initials: B
authors.lastname: Sharma
authors.forename: Neelam
authors.initials: N
authors.lastname: Bhardwaj
authors.forename: Shashi
authors.initials: S
authors.lastname: Gupta
authors.forename: Pradeep Kumar
authors.initials: PK
authors.lastname: Gupta
authors.forename: Asha
authors.initials: A
authors.lastname: Verma
authors.forename: Kusumlata
authors.initials: K
authors.lastname: Malviya
keywords: Antenatal umbilical coiling index; Hypercoiling; Hypocoiling; Low birth weight; Perinatal outcome