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Singleton pregnancy using in vitro fertilization or intracytoplasmic sperm injection does not increase risk of bleeding in cesarean delivery: a retrospective cohort study

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A Letter to the Editor to this article was published on 31 October 2023

Abstract

Purpose

Several studies indicate that assisted reproductive technology (ART) including in vitro fertilization (IVF) and intracytoplasmic sperm injection (ICSI) pregnancies carries increased risk of complications including postpartum hemorrhage (PPH). However, the association between IVF/ICSI and the bleeding risk particularly in cesarean delivery has not been systematically assessed. The aim of this study was to evaluate bleeding risk during and after cesarean delivery in parturients who conceived using IVF or ICSI.

Methods

This is a retrospective observational study analyzing data from 310 parturients who underwent cesarean delivery: 155 who had conceived using IVF or ICSI (IVF/ICSI group) and 155 age and year of delivery matched controls who had conceived spontaneously (control group). The primary outcome measure was the amount of blood lost during and within 24 h after cesarean delivery. Secondary outcome measure was the incidence of severe PPH. With 132 parturients in each group, we had 90% power to detect a 200 mL difference in the bleeding amount, at a 0.05 two-sided significance level.

Results

The amount of bleeding in the IVF/ICSI group was 1234 ± 669 mL, which was 124 mL (11.2%) greater than that in the control group (95% CI − 34 to 282; p = 0.12). The incidence of severe PPH in the IVF/ICSI group and in the control group was 23.9% and 16.8%, respectively (p = 0.16), and the unadjusted odds ratio was 1.6 (95% CI, 0.9–2.7; p = 0.12). No significant independent effect of IVF/ICSI on the bleeding amount and the incidence of severe PPH was observed in multivariable regression analyses (p = 0.22, p = 0.16).

Conclusion

In this study, IVF and ICSI were not associated with increasing risk of bleeding in cesarean delivery.

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Data availability

The data that support the findings of this study are available on request from the corresponding author MA.

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Authors and Affiliations

  1. Department of Anesthesia, Teine Keijinkai Hospital, 1-12-1-40 Maeda, Teine, Sapporo, 006-8555, Japan

    Mariko Aizawa, Satoshi Ishihara & Takeshi Yokoyama

Authors
  1. Mariko Aizawa
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  2. Satoshi Ishihara
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  3. Takeshi Yokoyama
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Correspondence to Mariko Aizawa.

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Aizawa, M., Ishihara, S. & Yokoyama, T. Singleton pregnancy using in vitro fertilization or intracytoplasmic sperm injection does not increase risk of bleeding in cesarean delivery: a retrospective cohort study. J Anesth 37, 769–774 (2023). https://doi.org/10.1007/s00540-023-03234-z

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  • DOI: https://doi.org/10.1007/s00540-023-03234-z

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