CNS Drugs

, Volume 31, Issue 4, pp 319–326 | Cite as

A Retrospective Cohort Study of Acute Kidney Injury Risk Associated with Antipsychotics

Original Research Article

Abstract

Background

A recent large database analysis raised concerns of potential acute kidney injury (AKI) risk associated with antipsychotics. However, whether individual atypical and typical antipsychotics are associated with differential AKI risks has not been investigated.

Objective

The current study compared the risks of AKI and known causes of AKI associated with a broad range of atypical and typical antipsychotics.

Method

This retrospective cohort analysis used January 2007–June 2013 US nationwide Humana claims data to define episodes of antipsychotic drug therapy for patients with schizophrenia and bipolar disorder. Study drugs were aripiprazole, fluphenazine, haloperidol, olanzapine, quetiapine, risperidone, and ziprasidone. Study outcomes were hospitalizations with AKI, and known causes of AKI, i.e., hypotension, acute urinary retention, neuroleptic malignant syndrome/rhabdomyolysis, and pneumonia. AKI was the primary outcome of the study. Cox regressions using haloperidol as the baseline comparator were used to estimate the impact of alternative antipsychotics on the risks of study adverse events following the initiation of treatment. The Cox models controlled for treatment history, comorbidities, and concomitant drug use in the prior 6 months. They also controlled for patient demographics and dose of current treatment.

Results

The overall incidence of AKI was 25.0 per 1000 person-years. According to our multivariate regression results, the risk of AKI was significantly increased in patients taking olanzapine [hazard ratio (HR) 1.344, 95% confidence interval (CI) 1.057–1.708], quetiapine (HR 1.350, 95% CI 1.082–1.685), and ziprasidone (HR 1.338, 95% CI 1.035–1.729) relative to haloperidol. Aripiprazole (HR 1.152, 95% CI 0.908–1.462) and risperidone (HR 1.147, 95% CI 0.923–1.426) had insignificantly higher risks of AKI compared with haloperidol, whereas fluphenazine (HR 0.729, 95% CI 0.483–1.102) had an insignificantly lower risk of AKI. When compared between drug classes, atypical antipsychotics had a significantly higher risk of AKI (HR 1.313, 95% CI 1.083–1.591) than typical antipsychotics.

Conclusions

Antipsychotics are associated with differential AKI risks, with several atypical antipsychotics having higher risks than haloperidol. However, the overall incidence of AKI was moderate, and AKI risk should only raise concern for clinicians with elderly patients or patients who are vulnerable to kidney disease.

Notes

Compliance with Ethical Standards

Conflict of interest

Yawen Jiang, Jeffrey S. McCombs, and Susie H. Park report no financial or other relationship relevant to the subject of this article.

Funding

None.

Supplementary material

40263_2017_421_MOESM1_ESM.pdf (226 kb)
Supplementary material 1 (PDF 226 kb)

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Copyright information

© Springer International Publishing Switzerland 2017

Authors and Affiliations

  • Yawen Jiang
    • 1
  • Jeffrey S. McCombs
    • 1
  • Susie H. Park
    • 2
  1. 1.Department of Pharmaceutical and Health Economics, Leonard D. Schaeffer Center for Health Policy and Economics, School of PharmacyUniversity of Southern California, USC Schaeffer Center, Verna and Peter Dauterive Hall (VPD)Los AngelesUSA
  2. 2.Titus Family Department of Clinical Pharmacy, School of PharmacyUniversity of Southern CaliforniaLos AngelesUSA

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