The PRIDE Study and the Conduct of Electroconvulsive Therapy: Questions Answered and Unanswered.

The recently published PRIDE study (prolonging remission in the depressed elderly) constitutes an important contribution to electroconvulsive therapy (ECT) technique, from the standpoint of both the index course to treat depressive symptoms and the post-remission continuation period to prevent relapse. This study was probably the last large, National Institute of Mental Health-funded, multisite ECT technical study for some time to come, so extracting clinically relevant recommendations is worthwhile. In this commentary, the author discusses evidence from this trial relevant to several important clinical index and continuation ECT technical issues and elaborates several unanswered questions deserving further consideration.