Effects of Repeated Electroconvulsive Therapy Sessions on Anesthetic Requirements

Electroconvulsive therapy (ECT) is an effective treatment for severe depression and other psychiatric disorders. ECT is usually given in several sessions on different days. During each session, patients receive short-acting anesthesia to ensure comfort and safety. This study aims to evaluate whether the amount of anesthetic medication required changes during repeated ECT sessions in the same patient. In addition, the study will examine the relationship between anesthetic dose, seizure duration, seizure quality (measured by postictal suppression index), and recovery time. This is a prospective observational study. All anesthesia and ECT procedures will be performed according to routine clinical practice. No additional intervention will be applied for research purposes.