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Adverse pregnancy outcomes and multiple nuchal cord loops

  • Maternal-Fetal Medicine
  • Published:
Archives of Gynecology and Obstetrics Aims and scope Submit manuscript

Abstract

Purpose

To evaluate the effects of nuchal cord and the number of loops during labor and delivery on delivery outcomes among women with singleton pregnancy who delivered vaginally.

Methods

This retrospective cohort study included 42,798 women with singleton, vertex, and vaginal deliveries at 24–43 weeks of gestation. We analyzed delivery outcomes based on the number of nuchal cord loops.

Results

A total of 42,798 deliveries met the inclusion criteria, of which, 3809 (8.9%) had nuchal cord with 1 loop at delivery, 1035 (2.42%) had 2 loops, and 258 (0.6%) had 3 loops. Nuchal cord with 3 loops compared to no nuchal cord has been associated with higher incidence of intrauterine fetal death (1.9%), Apgar scores less than 7 at 1 and 5 min (7.4%, 2.3%), and higher rate of operative vaginal deliveries (17.5%). Nuchal cord with 2 or 3 loops was associated with higher incidence of intrauterine growth restriction (10.2%, 11.6%).  In a multiple logistic regression model, nuchal cord with 3 loops was an independent risk factor for operative vaginal delivery and Apgar score less than 7 in 1 min.

Conclusions

In the case of vaginal delivery in the presence of nuchal cord, as the number of nuchal cord loops increased, so did the number of adverse delivery outcomes. While 3 loops were associated with higher incidence of intrauterine fetal death, intrauterine growth restriction, increased operative vaginal deliveries, and low Apgar scores, 1 loop was not associated with adverse perinatal outcomes.

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Acknowledgements

The authors thank Nava Jelin, MS for data analysis and Faye Schreiber, MS for editing the manuscript. They are employees of Meir Medical Center.

Funding

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Authors and Affiliations

Authors

Contributions

HS protocol development, data collection, analysis and interpretation. YD data collection, analysis and interpretation, manuscript writing/editing. NA data analysis and interpretation, manuscript writing/editing. OM data analysis and interpretation, manuscript writing/editing. AB data analysis and interpretation, manuscript writing/editing. TB-S protocol development, data analysis and interpretation. All authors provided final approval of the version to be published.

Corresponding author

Correspondence to Nissim Arbib.

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The authors report no conflicts of interest.

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Schreiber, H., Daykan, Y., Arbib, N. et al. Adverse pregnancy outcomes and multiple nuchal cord loops. Arch Gynecol Obstet 300, 279–283 (2019). https://doi.org/10.1007/s00404-019-05178-w

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  • DOI: https://doi.org/10.1007/s00404-019-05178-w

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