Review: Atypical antipsychotic drugs increase risk for death in dementiaPDF
ACP J Club. 2006 Mar-Apr;144:36. doi:10.7326/ACPJC-2006-144-2-036
Clinical Impact Ratings
Schneider LS, Dagerman KS, Insel P. Risk of death with atypical antipsychotic drug treatment for dementia: meta-analysis of randomized placebo-controlled trials. JAMA. 2005;294:1934-43. [PubMed ID: 16234500]
In older patients with dementia, do atypical antipsychotic drugs (APDs) increase risk for death compared with placebo?
Data sources: MEDLINE (1966 to April 2005) and Cochrane Controlled Trials Register (Issue 1, 2005), conference abstracts and proceedings (from 1999), and pharmaceutical companies.
Study selection and assessment: Published and unpublished randomized, double-blind, placebo-controlled trials (RCTs) that evaluated mortality in older patients with dementia.
Outcomes: Death during the study period or within 30 days of discontinuing treatment.
15 RCTs with 16 comparisons (n = 5110, mean age 81 y, 70% women) met the selection criteria. 9 RCTs were unpublished. 87% of patients had Alzheimer disease. Patients were nursing home residents in 11 RCTs and outpatients in 4 RCTs. Median duration of treatment was 10 weeks (range 6 to 26 wk). The drugs studied included aripiprazole (3 RCTs), olanzapine (5 RCTs), risperidone (5 RCTs), and quetiapine (3 RCTs). About one third of patients in both intervention and placebo groups dropped out before completion. Analysis was by intention-to-treat. Atypical APDs led to higher mortality rates than did placebo; results were similar when analysis was done on a per-patient basis or extrapolated to per person-year (Table). Treatment effect was similar regardless of specific drug, cognitive function level, type of dementia, or setting.
In older patients with dementia, atypical antipsychotic drugs increase risk for death more than placebo.
Sources of funding: Alzheimer's Disease Centers of California and University of Southern California Alzheimer's Disease Research Center.
For correspondence: Dr. L.S. Schneider, University of Southern California, Los Angeles, CA, USA. E-mail firstname.lastname@example.org.
Table. Atypical antipsychotic drugs (APDs) vs placebo for dementia at 10 to 30 weeks*
|Outcomes||Number of comparisons (n)||Weighted event rates||RRI (95% CI)||NNH (CI)|
|Death per patient||16 (5110)||3.5%||2.3%||52% (5.9 to 117)||85 (38 to 751)|
|Death per person-y||16 (874)||22%||13%||65% (19 to 129)||12 (6 to 40)|
*Abbreviations defined in Glossary; RRI, NNH, and CI calculated from data in article using a fixed-effects model for death per patient and a random-effects model for death per person-year.
Schneider and colleagues substantiate an April 2005 advisory from the U.S. Food and Drug Administration about increased mortality in older patients with dementia given atypical APDs (1). According to the review by Schneider and colleagues, atypical APDs will cause 1 death for every 85 patients treated, or 1 excess death for every 12 patient-years of treatment.
The risks associated with such conventional APDs as haloperidol and the phenothiazines are even greater. In an observational study, conventional ADPs were associated with a 1.37 relative risk (RR) for death in older persons during the first 6 months of use and a 1.56 RR during the first 40 days, compared with atypical APDs (2).
These studies do not justify avoidance of APDs in patients with dementia, but underscore the need to carefully assess and document the risk–benefit ratio for each patient, which includes ruling out such reversible contributors as delirium and factoring in caregiver well-being. Delusions, hallucinations, and agitation or aggression affect 18%, 11%, and 30%, respectively, of persons with dementia (3). In about half of these individuals, the behaviors are considered highly disturbing to their caregivers. These psychiatric symptoms commonly increase over time, correlate with caregiver burden (4), and represent the most appropriate indication for APD use in dementia. Clinical management should emphasize behavioral alternatives to medication, use of the lowest effective dose, and periodic tapering to determine the need for continued use.
Calvin Hirsch, MD
University of California, Davis
Sacramento, California, USA
1. FDA Public Health Advisory: deaths with antipsychotics in elderly patients with behavioral disturbances. U.S. Food and Drug Administration; 2005. www.fda.gov/cder/drug/advisory/antipsychotics.htm
2. Wang PS, Schneeweiss S, Avorn J, et al. Risk of death in elderly users of conventional vs. atypical antipsychotic medications. N Engl J Med. 2005;353:2335-41. [PubMed ID: 16319382]
3. Lyketsos CG, Lopez O, Jones B, et al. Prevalence of neuropsychiatric symptoms in dementia and mild cognitive impairment: results from the Cardiovascular Health Study. JAMA. 2002;288:1475-83. [PubMed ID: 12243634]
4. Berger G, Bernhardt T, Weimer E, et al. Longitudinal study on the relationship between symptomatology of dementia and levels of subjective burden and depression among family caregivers in memory clinic patients. J Geriatr Psychiatry Neurol. 2005;18:119-28. [PubMed ID: 16100100]