Suicidal ideation and ECT, ECT and suicidal ideation: A register study.

Area of Science:

• Psychiatry
• Neurology
• Clinical Psychology

Background:

• Electroconvulsive therapy (ECT) is a recognized treatment for severe depression, known for its anti-suicidal effects.
• The predictive value of baseline suicidal ideation (SI) on ECT outcomes remains an area requiring further investigation.

Purpose of the Study:

• To investigate the impact of baseline SI on response and remission rates following ECT in a large cohort of patients with depression.
• To assess the changes in SI before and after ECT treatment.

Main Methods:

• A population-based register study utilizing data from the Swedish National Quality Register for ECT and the Swedish Patient Register.
• Logistic regression analysis was employed to predict ECT response and remission based on baseline SI, controlling for various clinical and demographic factors.
• SI was defined as a score of ≥4 on the final item of the Montgomery-Åsberg Depression Rating Scale - Self Assessment (MADRS-S).

Main Results:

• Patients with baseline SI demonstrated lower response rates (53.7%) compared to those without SI (68.4%).
• Remission rates were also lower in patients with baseline SI (27.2%) versus those without (48.5%).
• A significant proportion (75.64%) of patients with pre-treatment SI no longer exhibited SI post-ECT, though persistent SI was associated with personality disorders, higher depression scores, and younger age.

Conclusions:

• Baseline SI is associated with reduced odds of response and remission following ECT.
• Despite this, ECT effectively reduces depressive symptoms and SI in a substantial number of patients.
• Clinicians should consider the potentially lower efficacy of ECT in younger patients with non-psychotic depression, SI, and comorbid personality disorders, warranting further research into alternative treatments for this subgroup.