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Meta-Analysis
. 2022 Dec 8;22(1):916.
doi: 10.1186/s12884-022-05256-z.

Insulin resistance in women with recurrent miscarriage: a systematic review and meta-analysis

Wang-Yu Cai #  1 , Xi Luo #  2 , Hou-Yi Lv  3 , Kai-You Fu  4 , Jian Xu  5   6
Affiliations
Meta-Analysis

Insulin resistance in women with recurrent miscarriage: a systematic review and meta-analysis

Wang-Yu Cai et al. BMC Pregnancy Childbirth. .

Abstract

Purpose: This review aimed to investigate the association of insulin resistance (IR) in women with recurrent pregnancy loss compared to women with normal pregnancy history.

Methods: PubMed, EMBASE, the Web of Science and Google Scholar databases were accessed to collect published observational studies that compared IR of recurrent pregnancy loss women with healthy women until the 6th of October 2022. Outcomes assessed in this review and meta-analysis included fasting blood glucose, fasting plasma insulin, homeostasis model assessment for IR, glucose to insulin ratio. Mean differences, odds ratios with 95% confidence interval were pooled using the fixed or random effect models. Sensitivity analyses were performed to validate the robustness of the results. Review Manager version 5.4.1 and Stata version 8.0 were used.

Results: A total of nineteen studies involving 4453 individuals were included. Recurrent pregnancy loss patients presented significantly higher fasting blood glucose, fasting plasma insulin, homeostasis model assessment for IR, and lower glucose to insulin ratios. Additionally, recurrent pregnancy loss patients had higher rates of IR as defined by abnormal fasting plasma insulin, homeostasis model assessment for IR, and glucose to insulin ratio. Sensitivity analyses validated the robustness of the results.

Conclusion: In the current review, we show that recurrent pregnancy loss is associated with a higher degree of IR and highlight the importance of screening and treatment of IR.

Keywords: GI ratio; HOMA-IR; Insulin resistance; Recurrent pregnancy loss; Systematic review.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Flowchart for selecting studies
Fig. 2
Fig. 2
Meta-analysis of FBG between the recurrent pregnancy loss and control groups
Fig. 3
Fig. 3
Meta-analysis of FIN between the recurrent pregnancy loss and control groups
Fig. 4
Fig. 4
Meta-analysis of HOMA-IR between the recurrent pregnancy loss and control groups
Fig. 5
Fig. 5
Meta-analysis of GI ratio between the recurrent pregnancy loss and control groups
Fig. 6
Fig. 6
Meta-analysis of IR between the recurrent pregnancy loss and control groups. A) HOMA-IR > 4.5, B) GI ratio < 4.5, C) FIN > 20
See this image and copyright information in PMC

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