Conditions: Depression
Keywords: Depression Electroconvulsive therapy Ketamine Methohexital
Allocation: RANDOMIZED | Intervention model: PARALLEL
Enrollment: 38
Healthy volunteers: no

Brief summary:
Does the use of ketamine as the anesthetic medication in electroconvulsive therapy (ECT) accelerate the antidepressant effect of ECT?

The study hypothesis was that depressed subjects receiving ECT with ketamine as the anesthetic agent would demonstrate a faster rate of improvement, defined as lower depression ratings after the second ECT than depressed patients receiving ECT with the usual anesthetic agent.

Detailed description:
There are several drugs available to induce anesthesia for electroconvulsive therapy (ECT), a psychiatric treatment for major depressive illness. The most commonly utilized of these include methohexital, thiopental, etomidate, and propofol. Recently, there has been interest in the use of ketamine in sub-anesthetic doses to treat major depressive illness.

In this randomized, blinded trial, depressed subjects scheduled to be treated with ECT were anesthetized with either ketamine or methohexital at doses of approximately 1.0 mg/kg for each drug. Patients received the same drug for up to six of their ECT treatments. Outcome measures included assessments of depressive severity, cognition, post-anesthesia side effects, and hemodynamics.

Subjects were to be followed with as long as they were receiving inpatient ECT treatments. The number of treatments was determined entirely by their primary psychiatric team, also blind to anesthetic, as per usual care. In other words, this study did not determine when to terminate the ECT course.

Arms:
arm 1: Subjects were dosed with approximately 1.0 mg/kg, using ketamine as anesthetic prior to electroconvulsive therapy (ECT). arm 2: Subjects were dosed with approximately 1.0 mg/kg, using methohexital as anesthetic prior to electroconvulsive therapy.

Interventions: intervention 1: Ketamine intervention 2: methohexital
Intervention descriptions: intervention 1: Subjects were dosed with approximately 1.0 mg/kg, using ketamine as anesthetic. intervention 2: Subjects were dosed with approximately 1.0 mg/kg, using methohexital as anesthetic.

Protocol document: