Perinatal outcomes of abnormal umbilical coiling according to a modified umbilical coiling index

Ohno, Yasumasa; Terauchi, Mikio; Koji, Takehiko

doi:10.1111/jog.13092

Cited by 18 publications

(13 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Ohno et al 17 reported that patients with umbilical cord torsion showed a significant decrease in the blood flow in the umbilical vein, which resulted in restricted fetal growth and various complications during delivery. In our study, the incidence of admission to the neonatal intensive care unit and the proportion of infants that were small for gestational age were significantly higher in patients with than without umbilical cord torsion, which is consistent with the results of the study by Ohno et al 17 This study has some limitations that should be acknowledged. We reviewed cases from a single hospital, and because of the retrospective nature of this study, some data may have been missed.…”

Section: Discussionmentioning

confidence: 99%

RETRACTED: Factors related to morbidity and maternal and perinatal outcomes of umbilical cord torsion

et al. 2020

View full text Add to dashboard Cite

This study analyzed factors influencing umbilical cord torsion, measured the umbilical coiling index (UCI) postnatally, and analyzed the association of umbilical cord torsion with maternal and perinatal outcomes. Methods: In total, 845 antenatal women who went into labor at the Fujian Provincial Maternity and Children's Hospital from January 2016 to January 2017 were retrospectively studied. The patients were divided into those with and without umbilical cord torsion. Possible influencing factors and the UCI were noted, and maternal and perinatal outcomes were compared. Results: Higher morbidity in the presence of umbilical cord torsion was affected by multiparous pregnancy and a long cord. The area under the curve was 0.666 for the UCI to predict fetal distress and 0.505 for the umbilical artery peak systolic to end diastolic flow velocity ratio (S/D ratio) to predict fetal distress. Umbilical cord torsion was associated with higher rates of fetal distress, forceps-assisted delivery, cesarean sections, fetal heart rate abnormalities, amniotic fluid meconium staining, neonatal intensive care unit admission, and small for gestational age. Conclusions: Multiparous status and longer umbilical cord length were highly associated with umbilical cord torsion. The UCI is a better predictor of fetal distress than is the umbilical artery S/D ratio.

show abstract

Section: Discussionmentioning

confidence: 99%

RETRACTED: Factors related to morbidity and maternal and perinatal outcomes of umbilical cord torsion

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Moreover, the age of examining the UCI is different in numerous studies (11). Due to various reports on UCI, Ohno (19) pinpointed that coiling in umbilical vein and artery was not generally the same. Therefore, the UCI could not be sufficiently accurate for the assessment.…”

Section: Discussionmentioning

confidence: 99%

Association Between Umbilical Cord Coiling Index and Prenatal Outcomes

Milani

Sharami

Lili

et al. 2018

International Journal of Women’s Health and Reproduction Scienc

View full text Add to dashboard Cite

Objectives: This study aimed to measure the umbilical cord indices (UCIs) after birth and to determine its relationship with prenatal complications. Materials and Methods: The present analytical cross-sectional study was conducted on all the pregnant women admitted to AlZahra hospital of Rasht. After birth, the umbilical cord was measured in terms of the appearance, number of vascular coils, and umbilical cord length. In addition, the umbilical cord vascular coils index was calculated. Further, maternal and neonatal variables were evaluated. Results: The mean number of umbilical cord coils, umbilical cord length, and the umbilical cord coiling index for 397 umbilical cords were obtained as 16.02 ± 4.48, 51.6 ± 12.0 and 0.31 ± 0.05 cm, respectively. In evaluating the state of the coil, 9.8% were found as hypocoil while the remaining were either hypercoil (10.3%) or normocoil (79.85%). Furthermore, a significant difference was observed between the umbilical cord coiling index, as well as gestational hypertension and abnormal fetal heart rate (HR) (P < 0.05). In the final logistic regression model, the umbilical cord length was recognized as a predictor variable for neonatal complications. Moreover, in multiple analyses regarding the effects of umbilical cord coiling index on neonatal complications by controlling the interferences, variables such as maternal age and parity in addition to the coil length were considered as predictors of neonatal complications. Conclusions: Generally, the abnormal umbilical cord coiling index was associated with pregnancy blood pressure (BP) and abnormal fetus HR. Therefore, diagnosing antenatal umbilical cord coiling index can be helpful in recognition of embryos at risk through a faster treatment process.

show abstract

“…Abnormalities in the degree of umbilical cord coiling are easy to screen for and have been linked to a number of adverse birth outcomes including prematurity, 1 spontaneous preterm delivery, 2 low birth weight (LBW), 1 small for gestational age (SGA) infants, [2][3][4][5] and nonreassuring fetal status. 1,[6][7][8][9][10] It has been proposed that cord coiling may be a result of hemodynamic stress 11,12 or external forces in utero such as nuchal cords, 13 fetal movement, 14,15 different umbilical vascular growth rates, 16 muscle fiber morphology, 17 or genetics. 18 The umbilical coiling index (UCI) is defined as the number of umbilical cord twists divided by the length of the cord in centimeters.…”

Section: Introductionmentioning

confidence: 99%

“…13,21 Other studies used their own distributions to classify <10th percentile as hypocoiling and >90th percentile as hypercoiling. 1,6,[8][9][10][22][23][24][25][26][27][28][29] Hypocoiling of the umbilical cord is commonly defined as a UCI < 10th percentile or less than 0.07 twists/cm. 19 The prevalence of hypocoiled cords in unselected singleton pregnancies ranges from 7.5% to 16.0% according to the previous literature.…”

Section: Introductionmentioning

confidence: 99%

“…2,21 Many adverse birth outcomes have been associated with postnatal hypocoiling; key among these are spontaneous preterm delivery, 2 lower Apgar score at 5 min, 2,6,7,20,22,27,29 and nonreassuring fetal status. 1,6,8,9 Like hypocoiling, hypercoiling has also been associated with adverse birth outcomes. Hypercoiling of the umbilical cord is commonly defined as a UCI > 90th percentile or greater than 0.30 twists/cm.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Umbilical Cord Coiling in High-risk Pregnancies: Associations With Determinants of Adverse Birth Outcomes and Iron Status

et al. 2018

View full text Add to dashboard Cite

Abnormal umbilical cord coiling has been associated with adverse neonatal outcomes, but the etiology of these findings remains poorly characterized. This study was undertaken to examine associations between cord coiling and maternal iron (Fe) status and to identify potential determinants of hypo- and hypercoiling in 2 higher risk obstetric groups: pregnant adolescents (≤18 years, n = 92) and adult women carrying twins (n = 49), triplets (n = 11), or quadruplets (n = 1). Umbilical cords were classified as hypo-, normo-, or hypercoiled using digital photographs to assess gross appearance. Hypocoiling and hypercoiling were observed in 44% (n = 86/195) and 13% (n = 26/195) of the combined study population. The prevalence of hypocoiling among women carrying multiples was over 3-fold higher than the prevalence in singleton pregnancies based on the published data. Within the entire study population, hypocoiling was associated with a lower gestational age at birth when compared to normocoiling and hypercoiling (36.3 ± 3.6 weeks [n = 86] vs 37.8 ± 2.7 [n = 83], P < .01, and 38.2 ± 2.6 [n = 26], P < .01, respectively), whereas hypercoiling was associated with significantly lower serum ferritin when compared to normocoiling ( P < .01) and hypocoiling ( P < .001). In the multiples cohort only, hypercoiling was significantly associated with multiparity ( P < .01) and lower birth weight ( P < .05). Further studies are needed to identify the determinants and consequences of cord coiling.

show abstract

Perinatal outcomes of abnormal umbilical coiling according to a modified umbilical coiling index

Abstract: Umbilical coiling abnormalities were investigated using a novel umbilical venous coiling index. A hypocoiled umbilical cord evaluated by umbilical venous coiling index was found to be associated with fetal heart rate abnormalities, operative delivery, and nuchal cord entanglement.

Cited by 18 publications

References 20 publications

RETRACTED: Factors related to morbidity and maternal and perinatal outcomes of umbilical cord torsion

RETRACTED: Factors related to morbidity and maternal and perinatal outcomes of umbilical cord torsion

Association Between Umbilical Cord Coiling Index and Prenatal Outcomes

Umbilical Cord Coiling in High-risk Pregnancies: Associations With Determinants of Adverse Birth Outcomes and Iron Status

Contact Info

Product

Resources

About