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A Preliminary Study of Adjunctive Nonconvulsive Electrotherapy for Treatment-Refractory Depression

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Abstract

Nonconvulsive electrotherapy (NET) defined as electrical brain stimulation administered like standard electroconvulsive therapy (ECT), but below seizure threshold, could be effective for patients with treatment-refractory depression (TRD) with fewer adverse neurocognitive outcomes. However, there is a lack of studies in Chinese patients with TRD. Thus, this study was conducted to examine the efficacy and safety of adjunctive NET for Chinese patients with TRD. Twenty TRD patients were enrolled and underwent six NET treatments. Depressive symptoms, response, and remission were assessed with the 17-item Hamilton Depression Rating Scale (HAMD-17) at baseline and after 1, 3, and 6 NET treatments. Neurocognitive function was assessed by the Wisconsin Card Sorting Test (WCST) at baseline and after the completion of six NET treatments. Mean HAMD-17 scores declined significantly from 26.2 to 10.4 (p < 0.001) after post-NET. The rates of response and remission were 60.0% (95% CI: 36.5–83.5) and 10.0% (95% CI: 0–24.4), respectively. Neurocognitive performance improved following a course of NET. No significant association was found between changes in depressive symptoms and baseline neurocognitive function. Adjunctive NET appeared to be effective for patients with TRD, without adverse neurocognitive effects. Randomized controlled studies were warranted to confirm these findings.

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Acknowledgements

This study was funded by the Science and Technology Planning Project of Guangdong Province (B2016109), the Science and Technology Plan Project of Guangdong Province (2019B030316001), and Guangzhou Clinical Characteristic Technology Project (2019TS67).

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Correspondence to Yu-Ping Ning or Xiong Huang.

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Zheng, W., Jiang, ML., He, HB. et al. A Preliminary Study of Adjunctive Nonconvulsive Electrotherapy for Treatment-Refractory Depression. Psychiatr Q 92, 311–320 (2021). https://doi.org/10.1007/s11126-020-09798-3

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