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J Clin Psychiatry. 2007 Aug;68(8):1177-85.

Lithium augmentation compared with phenelzine in treatment-resistant depression in the elderly: an open, randomized, controlled trial.

Author information

  • 1Department of Old Age Psychiatry, Altrecht Institute of Mental Health Care, Utrecht, The Netherlands. r.kok@altrecht.nl

Abstract

BACKGROUND:

Up to a third of elderly patients with major depressive disorder do not respond to a first course of treatment with an antidepressant. There is a lack of controlled studies evaluating therapies for treatment-resistant depression in late-life depression, and no randomized controlled studies assessing the efficacy and tolerability of lithium augmentation in elderly patients have been published.

METHOD:

Twenty-nine elderly inpatients with major depressive disorder according to DSM-IV criteria who had previously failed to respond to 1 or more adequate trials with a tricyclic antidepressant or venlafaxine were included in a 6-week, open, randomized, controlled study with a 2-year follow-up. Subjects received either lithium augmentation or the monoamine oxidase inhibitor phenelzine. The primary outcome criterion was remission, defined as a final score of less than or equal to 10 on the Montgomery-Asberg Depression Rating Scale (MADRS). Response was defined as at least 50% reduction on the MADRS or the Hamilton Rating Scale for Depression (HAM-D).

RESULTS:

Twenty-eight subjects completed the trial. Remission on the MADRS was achieved by 33.3% of the lithium patients, compared with none of the phenelzine patients (p = .042). Response also showed a difference in favor of lithium augmentation (p = .035 on both the MADRS and the HAM-D). Overall tolerability was good, with no dropouts due to side effects. Subjective memory impairment was more prevalent among patients receiving phenelzine (p = .002), and tremors were significantly more prevalent among patients receiving lithium (p = .002). During the 2-year follow-up, 25 patients (86.2%) did achieve remission, particularly on prolonging the lithium treatment (5 patients) or on lithium augmentation to phenelzine (5 patients).

CONCLUSION:

Lithium was more effective than phenelzine in elderly patients with treatment-resistant major depressive disorder, while tolerance of both treatments was remarkably good in this group of elderly inpatients with many comorbid medical disorders.

CLINICAL TRIALS REGISTRATION:

Controlled-trials.com identifier is RCTN93105957.

PMID:
17854241
[PubMed - indexed for MEDLINE]
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