A nurse is preparing to teach a client who has major depressive disorder and is scheduled to undergo electroconvulsive therapy (ECT). Which of the following statements should the nurse include in the teaching?

"ECT is contraindicated in clients who have psychotic symptoms."

"ECT is delivered through electrodes attached to the head."

"ECT cannot be administered to clients who have suicidal ideation."

"ECT is conducted under regional anesthesia."