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Transcranial magnetic stimulation for treating depression in elderly patients

Authors Hizli Sayar G, Ozten E, Tan O, Tarhan N

Received 20 February 2013

Accepted for publication 11 March 2013

Published 15 April 2013 Volume 2013:9 Pages 501—504

DOI https://doi.org/10.2147/NDT.S44241

Checked for plagiarism Yes

Review by Single-blind

Peer reviewer comments 3

Gokben Hizli Sayar, Eylem Ozten, Oguz Tan, Nevzat Tarhan

Uskudar University, Neuropsychiatry Istanbul Hospital, Department of Psychiatry, Istanbul, Turkey

Purpose: The aim of the study reported here was to examine the safety and effectiveness of high-frequency repetitive transcranial magnetic stimulation (rTMS) in elderly patients with depression.
Patients and methods: Sixty-five depressed elderly patients received rTMS over their left prefrontal cortex for 6 days per week, from Monday to Saturday, for 3 weeks. The rTMS intensity was set at 100% of the motor threshold and 25 Hz stimulation with a duration of 2 seconds and was delivered 20 times at 30-second intervals. A full course comprised an average of 1000 magnetic pulses. Depression was rated using the Hamilton Depression Rating Scale (HAMD) before and after treatment. Response was defined as a 50% reduction in HAMD score. Patients with HAMD scores < 8 were considered to be in remission.
Results: The mean HAMD score for the study group decreased from 21.94 ± 5.12 before treatment to 11.28 ± 4.56 after rTMS (P < 0.001). Following the treatment period, 58.46% of the study group demonstrated significant mood improvement, as indexed by a reduction of more than 50% on the HAMD score. Nineteen of these 38 patients attained remission (HAMD score < 8), while 41.54% of all study patients achieved a partial response. None of the patients had a worsened HAMD score at the end of the treatment. Treatment was generally well tolerated and no serious adverse effects were reported.
Conclusion: In this study, rTMS was found to be a safe, well-tolerated treatment, and a useful adjunctive treatment to medications in elderly treatment-resistant depressed patients. This study contributes to the existing evidence on the antidepressant effect of rTMS in the treatment of depression in patients over 60 years of age.

Keywords: high-frequency repetitive TMS, rTMS, Hamilton Depression Rating Scale

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