Larger trials needed
Commenting on the study, Dan Iosifescu, MD, MSc, associate professor of psychiatry, New York University School of Medicine, said that if the finding “were based on a larger study it would be very important, as a theoretical risk of psychosis is preventing such patients from access to an otherwise beneficial treatment.”
However, “since the review is based on a small sample, a low risk of psychosis exacerbation after IV ketamine is still possible,” said Dr. Iosifescu, who is also the director of clinical research at the Kline Institute for Psychiatric Research in Orangeburg, New York, and was not involved with the study.
Dr. Veraart agreed, adding that the “efficacy, safety, and tolerability of ketamine in depressed patients with a vulnerability to psychosis should be investigated in well-designed randomized controlled trials before application on a large scale is promoted.”
The study had no specific funding. Dr. Veraart has received speaker honoraria from Janssen outside of the submitted work. The other authors’ disclosures are listed in the original article. Dr. Iosifescu has been a consultant to the Centers of Psychiatric Excellence, advising clinics on the best methods of providing treatment with IV ketamine.
A version of this article first appeared on Medscape.com.