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Summary
For endogenous depression, switching to bilateral electroconvulsive therapy (ECT) after initial unilateral ECT shows no significant benefit and may impair memory. Continuing unilateral ECT is recommended to avoid potential memory deficits.
Area of Science:
- Neuroscience
- Psychiatry
- Clinical Medicine
Background:
- Electroconvulsive therapy (ECT) is a treatment for severe mental disorders.
- Unilateral ECT and bilateral ECT are two methods of administering ECT.
- Determining the optimal ECT technique for treatment-resistant depression is crucial.
Purpose of the Study:
- To evaluate the efficacy of switching to bilateral electroconvulsive therapy (ECT) after inadequate response to initial unilateral ECT in patients with endogenous depression.
- To compare treatment outcomes between patients who continued unilateral ECT and those who switched to bilateral ECT.
Main Methods:
- A retrospective study of 61 patients with endogenous depression.
- Patients were divided into two groups: Group U (continued unilateral ECT, n=34) and Group UB (switched to bilateral ECT, n=27).
- Groups were compared based on final therapeutic results, seizure duration, medication use, and demographic factors.
Main Results:
- No significant differences in final therapeutic outcomes were observed between the unilateral and bilateral ECT groups.
- A slight tendency towards better outcomes was noted in the group that continued unilateral ECT, potentially due to slightly higher average age.
- Key treatment parameters such as seizure duration, benzodiazepine use, and concurrent antidepressant medication were comparable between groups.
Conclusions:
- Switching to bilateral ECT after an insufficient response to 6-10 unilateral ECT sessions does not offer significant therapeutic advantages for endogenous depression.
- Given the potential for bilateral ECT to cause significant memory impairment, maintaining unilateral ECT is advisable to prevent adverse cognitive effects.