Risk of Bleeding in Patients on Full-Dose Enoxaparin With Venous Thromboembolism and Selective Serotonin Reuptake Inhibitors.

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Risk of Bleeding in Patients on Full-Dose Enoxaparin With Venous Thromboembolism and Selective Serotonin Reuptake Inhibitors.

Ann Pharmacother. 2017 Mar;51(3):226-231

Authors: Samuel NG, Seifert CF

Abstract
BACKGROUND: Selective serotonin reuptake inhibitors (SSRIs) are very commonly prescribed agents that are also potent antiplatelet agents.
OBJECTIVE: This study was designed compare the rate of major bleeding events between patients who were treated with low-molecular-weight heparin (LMWH) for venous thromboembolism (VTE) on SSRIs and those not on chronic SSRI therapy.
METHODS: This was a retrospective cohort study of 575 patients with a primary or secondary diagnosis of an acute VTE initiated on full-dose enoxaparin with or without an SSRI between October 1, 2009, and October 1, 2014, in a 443-bed, single tertiary care referral county teaching hospital.
RESULTS: No significant difference was found in the incidence of major bleeding in the SSRI versus non-SSRI group (19.6% vs 17.0%, P = 0.548). Ad hoc analysis demonstrated an elevated risk of major bleeding in patients on escitalopram compared with those on any of the other SSRIs (46.2% vs 15.2%, P = 0.018). Multivariate analysis demonstrated that escitalopram use-OR (95% CI) = 18.85 (1.84-193.6)-was associated with increased major bleeding, and acid suppressive therapy-0.24 (0.07-0.90); P = 0.014-was associated with decreased major bleeding in patients reporting alcohol use.
CONCLUSION: No difference was found in the incidence of major bleeding in patients on LMWH and SSRIs versus those on LMWH but not on SSRIs. However, ad hoc findings showed a significantly higher rate of major bleeding events in patients who received escitalopram and alcohol among patients on full-dose enoxaparin for VTE. These findings merit further exploration.

PMID: 27834194 [PubMed - indexed for MEDLINE]

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