Flumazenil pretreatment in benzodiazepine-free patients: A novel method for managing declining ECT seizure quality

James Yi, Jonathan Torres, Yuval Azner, Punit Vaidya, Adam Schiavi, Irving M. Reti

Research output: Contribution to journalArticlepeer-review

Abstract

Objective: Seizure threshold increases with successive electroconvulsive therapy (ECT) treatments, which can be especially problematic when treating older patients who have higher seizure thresholds at baseline because ECT devices are limited by the amount of charge that can be delivered. Case Reports: We present a case series of 3 older patients who had long ECT courses that were complicated by inability to generate seizures, poor quality seizures, and inadequate clinical response despite established measures to lower seizure threshold including prehydration, hyperventilation, and minimizing methohexital dose using remifentanil. As preclinical studies show electroconvulsive seizure increases diazepam binding, we hypothesized that a contributor to declining seizure quality and inadequate ECT responsiveness in these individuals was enhanced benzodiazepine receptor function, although none of the 3 patients were taking benzodiazepines or any other anticonvulsant medication. Accordingly, we pretreated patients with flumazenil, a competitive inhibitor at the benzodiazepine-binding site, and observed improvement in seizure quality and clinical response. Conclusion: Flumazenil pretreatment of elderly ECT patients with declining seizure quality and inadequate clinical response in the setting of repeated treatments may represent a novel strategy for managing such patients. A clinical trial would be required to test this hypothesis.

Original languageEnglish (US)
Pages (from-to)185-189
Number of pages5
JournalJournal of ECT
Volume28
Issue number3
DOIs
StatePublished - Sep 1 2012

Keywords

  • ECT
  • elderly
  • flumazenil
  • major depressive disorder
  • seizure threshold

ASJC Scopus subject areas

  • Neuroscience (miscellaneous)
  • Psychiatry and Mental health

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