Association of Type of Antidepressant Initiation with Bleeding Risk in Atrial Fibrillation Patients Taking Oral Anticoagulants

Iris Yuefan Shao, J’Neka N.S. Claxton, Pamela L. Lutsey, Lin Yee Chen, Richard F. MacLehose, Alvaro Alonso

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Inconsistent evidence suggests that use of certain antidepressants, particularly selective serotonin reuptake inhibitors (SSRIs), in patients using oral anticoagulants (OACs) might be associated with an elevated risk of bleeding. Objective: This study aims to investigate the risk of bleeding associated with initiation of different types of antidepressants among atrial fibrillation (AF) patients on OAC therapy. Patients and methods: A total of 30,336 AF patients (mean age 72.2 years; 54% female) on OAC therapy that started antidepressant treatment were identified from the Truven Health Analytics MarketScan Commercial and Medicare Databases for the period 2007–2015. Exposure was defined as filling a prescription for antidepressant, and categorized as SSRI, serotonin/norepinephrine reuptake inhibitors (SNRIs), serotonin reuptake inhibitors (SRIs), tricyclic antidepressants (TCAs), or other antidepressants. The primary outcome was incident hospitalized bleeding. Associations of antidepressant type with bleeding were assessed calculating hazard ratios (HRs) and 95% confidence intervals (CIs) with adjusted Cox models in pairwise propensity score-matched cohorts. Results: During a mean follow-up of 21 months, we identified 1612 bleeding episodes. In pairwise comparisons, SSRI use was associated with an increased risk of bleeding when compared to most other antidepressants (HR 1.22, 95% CI 0.96–1.54 vs SNRI; HR 1.10, 95% CI 0.90–1.35 vs SRI; HR 1.03, 95% CI 0.82–1.30 vs TCA). SNRI use was associated with the lowest bleeding risk. Results did not differ by OAC type, age, and sex. Conclusions: Among AF patients on OAC initiating antidepressants, risk of bleeding varied across antidepressant type. This information can inform treatment choices among patients receiving OAC.

Original languageEnglish (US)
Pages (from-to)383-391
Number of pages9
JournalDrugs - Real World Outcomes
Volume8
Issue number3
Early online dateMay 20 2021
DOIs
StatePublished - Sep 2021

Bibliographical note

Funding Information:
Results from this study were previously presented as a poster presentation at American Heart Association EPI Lifestyle Scientific Session, 2019. Research reported in this publication was supported by the National Institutes of Health under Award Numbers R01HL122200, R21AG058445, and K24HL14852. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. This work was additionally supported by American Heart Association grant 16EIA26410001.

Funding Information:
Research reported in this publication was supported by the National Institutes of Health under Award Numbers R01HL122200, R21AG058445, and K24HL14852. The content is solely the responsibility of the authors and does not necessarily represent the official views of the National Institutes of Health. This work was additionally supported by American Heart Association grant 16EIA26410001 (Alonso).

Publisher Copyright:
© 2021, The Author(s).

PubMed: MeSH publication types

  • Journal Article

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