## ECT Treatment Course and Frequency ### Standard Treatment Protocol **Key Point:** Most patients with severe depression require 6–12 ECT sessions to achieve a therapeutic response, administered 2–3 times per week. ### Typical Course Breakdown | Parameter | Standard Range | Notes | | --- | --- | --- | | **Number of sessions** | 6–12 | Median ~8–10 sessions | | **Frequency** | 2–3 times/week | Allows neurochemical recovery between sessions | | **Duration of course** | 2–4 weeks | Depends on response and patient tolerance | | **Maintenance ECT** | 1–2 times/month | For relapse prevention in recurrent depression | ### Factors Influencing Session Number - **Faster response:** Psychotic depression, catatonia (may respond in 4–6 sessions) - **Slower response:** Chronic depression, personality disorders (may need 12–15 sessions) - **Electrode placement:** Bilateral ECT typically requires fewer sessions than unilateral **High-Yield:** The therapeutic response is cumulative—single or very few sessions rarely produce lasting benefit. At least 6 sessions are almost always necessary. ### Clinical Indicators of Response - Improvement in mood, appetite, sleep, and psychomotor symptoms - Typically evident by session 4–6 - If no response by 8–10 sessions, reassess diagnosis and consider alternative strategies **Clinical Pearl:** Maintenance ECT (1–2 sessions/month) is used for patients with recurrent severe depression who relapse despite pharmacotherapy or who prefer ECT to long-term medication. [cite:Kaplan & Sadock 11e Ch 35]
Sign up free to access AI-powered MCQ practice with detailed explanations and adaptive learning.