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Dose-response analysis between hemoglobin A1c and risk of atrial fibrillation in patients with and without known diabetes

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  • Huilei Zhao
  • Menglu Liu
  • Zhifeng Chen
  • Kaibo Mei
  • Peng Yu
  • Lixia Xie

Abstract

Background: The relationship between serum hemoglobin A1c (HbA1c) and atrial fibrillation (AF) or postoperative AF (POAF) in coronary artery bypass (CABG) patients is still under debate. It is also unclear whether there is a dose-response relationship between circulating HbA1c and the risk of AF or POAF. Methods and results: The Cochrane Library, PubMed, and EMBASE databases were searched. A robust-error meta-regression method was used to summarize the shape of the dose-response relationship. The RR and 95%CI were using a random-effects model. In total, 14 studies were included, totaling 17,914 AF cases among 352,325 participants. The summary RR per 1% increase in HbA1c was 1.16 (95% CI: 1.07–1.27). In the subgroup analysis, the summary RR was 1.13 (95% CI: 1.08–1.19) or 1.12 (95% CI: 1.05–1.20) for patients with diabetes or without known diabetes, respectively. The nonlinear analysis showed a nonlinear (Pnonlinear = 0.04) relationship between HbA1c and AF, with a significantly increased risk of AF if HbA1c was over 6.3%. However, HbA1c (per 1% increase) was not associated with POAF in patients with diabetes (RR: 1.13, P = 0.34) or without known diabetes (RR: 0.91, P = 0.37) among patients undergoing CABG. Conclusion: Our results suggest that higher HbA1c was associated with an increased risk of AF, both in diabetes and in without diabetes or with unknown diabetes. However, no association was found between HbA1c and POAF in patients undergoing CABG. Further prospective studies with larger population sizes are needed to explore the association between serum HbA1c level and the risk of POAF.

Suggested Citation

  • Huilei Zhao & Menglu Liu & Zhifeng Chen & Kaibo Mei & Peng Yu & Lixia Xie, 2020. "Dose-response analysis between hemoglobin A1c and risk of atrial fibrillation in patients with and without known diabetes," PLOS ONE, Public Library of Science, vol. 15(2), pages 1-13, February.
    • Handle: RePEc:plo:pone00:0227262
    DOI: 10.1371/journal.pone.0227262
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    References listed on IDEAS

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    1. Wenwei Qi & Nixiao Zhang & Panagiotis Korantzopoulos & Konstantinos P Letsas & Min Cheng & Fusheng Di & Gary Tse & Tong Liu & Guangping Li, 2017. "Serum glycated hemoglobin level as a predictor of atrial fibrillation: A systematic review with meta-analysis and meta-regression," PLOS ONE, Public Library of Science, vol. 12(3), pages 1-14, March.
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