Cognitive function in late-life depression after modified electroconvulsive therapy: A stratified analysis

Area of Science:

• Neuroscience
• Geriatric Psychiatry
• Cognitive Science

Background:

• Modified electroconvulsive therapy (MECT) in late-life depression (LLD) presents variable cognitive outcomes.
• Emerging evidence links MECT cognitive effects to metabolic and mitochondrial health.
• Baseline cognitive impairment may represent reversible metabolic suppression.

Purpose of the Study:

• Identify baseline clinical and cognitive predictors of cognitive change post-MECT in LLD.
• Demonstrate that specific baseline deficits predict cognitive improvement.
• Establish early post-treatment markers for cognitive outcomes.

Main Methods:

• Assessed 65 LLD patients' cognitive status one week post-MECT using the Montreal Cognitive Assessment (MoCA).
• Defined improvement as a ≥2-point MoCA increase; stability/decline as <2 points.
• Utilized binomial logistic regression to analyze baseline demographics, HAMD-17, HAMA, MMSE, and MoCA scores as predictors.

Main Results:

• Both groups achieved similar antidepressant efficacy.
• Patients improving cognitively had higher baseline cognitive disturbance and lower MMSE/MoCA scores.
• Impaired naming and delayed recall were negative predictors; post-treatment orientation was a positive predictor.

Conclusions:

• MECT effectively treats depressive and anxiety symptoms in LLD.
• Greater baseline cognitive deficits predict greater cognitive gains post-MECT.
• Serial MoCA tracking, especially orientation, aids personalized treatment planning and risk-benefit assessment.