A nurse is caring for a client who has undergone electroconvulsive therapy (ECT). The nurse should monitor the client for which of the following adverse effects of ECT?

The correct answer is C: Memory deficit. Electroconvulsive therapy (ECT) is known to cause memory deficits as a common adverse effect. This is due to the temporary disruption of brain function during the procedure. The nurse should monitor the client for any signs of memory impairment post-ECT.
- A: Voice alteration is not a common adverse effect of ECT.
- B: Neck pain is not a typical adverse effect of ECT.
- D: Headache is not a primary concern following ECT.
Monitoring for memory deficits is crucial post-ECT to ensure the client's safety and well-being.