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Safety and Efficacy of Caffeine-Augmented ECT in Elderly Depressives: A Retrospective Study

Prior studies have shown that in younger depressives undergoing ECT whose seizure durations declined despite maximum settings on three different ECT devices, pretreatment with caffeine lengthened seizures and resulted in clinical improvement. Caffeine (half life, 140-270 minutes) was well tolerated even in patients with pre-existing cardiovascular disease. The purpose of this retrospective study was to determine the safety and efficacy of caffeine augmented ECT in elderly depressed patients. The charts of 14 elderly depressives (average age 75.6, range 59-83; 2 males, 12 females) who received caffeine-augmented ECT were reviewed. Patients pre- and post-ECT medications, blood pressure, pulse, and seizure times (cuff and EEG) for each ECT performed were noted. The following conclusions were drawn from our study: (1) Caffeine definitely increases the seizure length and was useful in our setting when the energy settings could not be increased anymore. (2) Caffeine augmentation inconsistently causes an increase in pulse rate, on average, in the elderly. (3) Caffeine inconsistently produces an increase in mean arterial pressure. (4) Caffeine did not consistently produce an increase in the maximum rate-pressure product. We conclude from this study that caffeine-augmented ECT is safe and effective in increasing seizure duration in the elderly. However, more research needs to be done to determine optimal dosing and tolerability.