Abstract:
Importance:More effective, tolerable interventions for bipolar depression treatment are needed. Transcranial direct current stimulation (tDCS) is a novel therapeutic modality with few severe adverse events that showed promising results for unipolar depression. Objective:To determine the efficacy and safety of tDCS as an add-on treatment for bipolar depression. Design, Setting, and Participants:A randomized, sham-controlled, double-blind trial (the Bipolar Depression Electrical Treatment Trial [BETTER]) was conducted from July 1, 2014, to March 30, 2016, at an outpatient, single-center academic setting. Participants included 59 adults with type I or II bipolar disorder in a major depressive episode and receiving a stable pharmacologic regimen with 17-item Hamilton Depression Rating Scale (HDRS-17) scores higher than 17. Data were analyzed in the intention-to-treat sample. Interventions:Ten daily 30-minute, 2-mA, anodal-left and cathodal-right prefrontal sessions of active or sham tDCS on weekdays and then 1 session every fortnight until week 6. Main Outcomes and Measures:Change in HDRS-17 scores at week 6. Results:Fifty-nine patients (40 [68%] women), with a mean (SD) age of 45.9 (12) years participated; 36 (61%) with bipolar I and 23 (39%) with bipolar II disorder were randomized and 52 finished the trial. In the intention-to-treat analysis, patients in the active tDCS condition showed significantly superior improvement compared with those receiving sham (βint = -1.68; number needed to treat, 5.8; 95% CI, 3.3-25.8; P = .01). Cumulative response rates were higher in the active vs sham groups (67.6% vs 30.4%; number needed to treat, 2.69; 95% CI, 1.84-4.99; P = .01), but not remission rates (37.4% vs 19.1%; number needed to treat, 5.46; 95% CI, 3.38-14.2; P = .18). Adverse events, including treatment-emergent affective switches, were similar between groups, except for localized skin redness that was higher in the active group (54% vs 19%; P = .01). Conclusions and Relevance:In this trial, tDCS was an effective, safe, and tolerable add-on intervention for this small bipolar depression sample. Further trials should examine tDCS efficacy in a larger sample. Trial Registration:clinicaltrials.gov Identifier: NCT02152878.
journal_name
JAMA Psychiatryjournal_title
JAMA psychiatryauthors
Sampaio-Junior B,Tortella G,Borrione L,Moffa AH,Machado-Vieira R,Cretaz E,Fernandes da Silva A,Fraguas R,Aparício LV,Klein I,Lafer B,Goerigk S,Benseñor IM,Lotufo PA,Gattaz WF,Brunoni ARdoi
10.1001/jamapsychiatry.2017.4040subject
Has Abstractpub_date
2018-02-01 00:00:00pages
158-166issue
2eissn
2168-622Xissn
2168-6238pii
2666768journal_volume
75pub_type
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