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Home » Evaluating the Mortality Risks of Antipsychotics in Children and Youths

Evaluating the Mortality Risks of Antipsychotics in Children and Youths

March 13, 2019
From The Carlat Child Psychiatry Report
Issue Links: Learning Objectives | Editorial Information | PDF of Issue
There are reports of increased mortality from antipsychotics in older adults. Now, we have a paper showing increased mortality in children, adolescents, and young adults aged 5–24 years. Given the frequent use, both on- and off-label, of antipsychotics, does this change how we use them? And if so, how?

What we already know
In 2005, the FDA added a black-box warning to all atypical antipsychotics. The agency cautioned against increased mortality when these drugs were used to treat “dementia-related psychosis.” No single medication accounted for the risk, and it was thought to be class-wide. The FDA found a 1.6- to 1.7-fold increased risk of mortality with atypical antipsychotics. Fatality rates were 4.5% in drug-treated patients compared to 2.6% in placebo groups (https://tinyurl.com/ycnt4nhl). Death was mostly due to heart-related events, such as heart failure and sudden death, or infections—mainly pneumonia (Schneider LS et al, JAMA 2005;294(15):1934–1943).

In June 2008, the FDA extended the black-box warning to typical antipsychotics. Researchers, surprisingly, found that typicals increased the risk of death even more than atypicals. The risk was greatest with higher doses (Wang PS et al, N Engl J Med 2005;353(22):2335–2341). As with the earlier black-box warning, this risk applied specifically to elderly patients with dementia-related psychosis.

New data on young people
Ray et al recently published a retrospective cohort study of Tennessee Medicaid enrollees aged 5–24 years (Ray WA et al,  JAMA Psychiatry 2019;76(2):162–171). Patients with major medical illnesses, schizophrenia, or Tourette syndrome were excluded. Three groups were studied: new antipsychotic medication users taking more than 50 mg chlorpromazine equivalents (high-dose group), new antipsychotic medication users taking 50 mg or less chlorpromazine equivalents (low-dose group), and a control group who were taking ADHD medications, antidepressants, and/or mood stabilizers.

The study recruited 189,361 children and youths in the control group (mean age 12.0 years), 28,377 in the low-dose group (mean age 11.7), and 30,120 in the high-dose group (mean age 14.5). The majority of patients in all groups were male. The primary outcome was deaths during study follow-up while out of hospital or within 7 days after hospital admission.

The troubling finding was that patients in the high-dose group had an 80% (1.8-fold) increased risk of death, which is comparable to the risk in older adults. Even more troubling, the risk of death from cardiovascular or metabolic causes, which should be rare in this population, increased 4.3-fold. There was no elevated mortality risk in controls or with antipsychotic doses of 50 mg or lower.

The groups, however, were not equal. High-dose antipsychotic users had more mood disorders and other psychiatric comorbidities. They were more often prescribed mood stabilizers and other psychoactive drugs. They also had higher rates of diabetes, obesity, smoking, cardiovascular disease, and opioid use at baseline. Researchers attempted to control for these factors in their analysis, but it’s difficult to control for such confounding issues in a retrospective study.

Conclusion
What’s the takeaway message here? This is a single data point, and it was based on a large retrospective analysis. It’s unlikely that any prospective trial of the dangers of antipsychotics could ever be ethically conducted on children, so this type of data may be all we have to go on in making decisions. It’s certainly cause for concern, but it should not lead to a sweeping change in the way we practice. Nonetheless, given the potential dangers, we recommend extremely careful use of antipsychotic medications in all populations. We propose the following:

  • Use other measures before antipsychotics, including psychosocial interventions and other less hazardous classes of medications, such as ­antidepressants

  • Make sure you have a clear FDA-approved indication (or a clearly documented and discussed rationale if off-label)

  • Monitor for side effects, including metabolic, cardiac, and neurological

  • Limit antipsychotic therapy to the lowest dose and shortest duration possible


CCPR Verdict: High-dose antipsychotic use is usually a poor practice, and while not a definitive statement, the Ray et al study should give any clinician further pause. This paper talks of a very low threshold for “high-dose” antipsychotics. Since clinicians frequently dose antipsychotics in children above the threshold in the article, we have provided the “Antipsychotic Dose Equivalencies” table below so that you will know when you are exceeding these thresholds, even though they may be within the commonly accepted “usual dosing range” of the medication.
Table: Antipsychotic Dose Equivalencies

Table: Antipsychotic Dose Equivalencies

Click for full-size PDF.
Child Psychiatry
KEYWORDS antipsychotics psychopharmacology schizophrenia
www.thecarlatreport.com
Issue Date: March 13, 2019
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Table Of Contents
CME Post-Test - Trauma in Children and Adolescents, CCPR, March/April 2019
Would Treating Kids With ADHD Help Their Mothers?
Is Watching ‘13 Reasons Why’ Bad for Teens?
How Helpful Is Computerized Testing for ADHD?
Psychiatric Aspects of Mild Traumatic Brain Injury in Children and Adolescents
Rapid-Onset Gender Dysphoria in Adolescents and Young Adults
Building Self-Regulation in Children
Practicalities of Providing Volunteer Services for Youth Refugees or Asylum Seekers
Evaluating the Mortality Risks of Antipsychotics in Children and Youths
Note From the Editor-in-Chief
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