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Published on: November 21, 2013
Incidence of Venous Thromboembolism Among Commonly Prescribed Second-Generation Antipsychotics
Rachel Paulmann1, Kristen Backe1, John Pinsonnault1
1Department of Pharmacy, Veterans Affairs North Texas Health Care System, Dallas, TX, USA.
Abstract:
Background: Second-generation antipsychotics (SGAs) are commonly prescribed medications used to treat a variety of mental health conditions. Recent data has correlated antipsychotic medications with venous thromboembolism (VTE). SGAs have diverse side effect profiles, which may contribute to differences in incidence of VTE. It is unknown which SGAs confer the most risk, and what the mechanism of increased risk is. Objective: Determine incidence of VTE in Veterans at Veterans Affairs North Texas Health Care System (VA-NTX HCS) between SGAs aripiprazole, olanzapine and risperidone. Methods: Retrospective chart review of adult Veterans at VA-NTX HCS between October 2015 to December 2019 prescribed aripiprazole, olanzapine, or risperidone. Results: Of 823 Veterans, incidence of VTE was lowest in aripiprazole group at .4%, increased to 1.7% in the olanzapine group, and was highest at 2.5% in the risperidone group. However, differences in incidence of VTE between SGAs were not statistically different, indicating no between-group differences. Conclusion: There was no difference in the incidence of VTE between risperidone, olanzapine, or aripiprazole. Given multiple limitations with this study, higher-powered studies should be conducted to investigate the possibility of differences in the incidence of VTE between the SGAs.
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