A nurse is caring for a client who has severe depression and is scheduled to receive electroconvulsive therapy. The nurse should recognize that the client will receive succinylcholine to prevent which of the following adverse effects?

A. Aspiration: Succinylcholine is used during electroconvulsive therapy (ECT) to induce muscle relaxation, but it does not specifically prevent aspiration. Aspiration risk is generally minimized by using an endotracheal tube and appropriate airway management during the procedure, not just succinylcholine. B. Decreased heart rate: Succinylcholine is not used to manage heart rate. While ECT can cause heart rate fluctuations, other medications, like atropine, are typically used if bradycardia is a concern. C. Elevated blood pressure: Succinylcholine does not address blood pressure regulation. ECT can cause temporary increases in blood pressure, but succinylcholine is used to relax muscles and does not manage blood pressure. D. Muscle distress: Succinylcholine is given during ECT to relax muscles and prevent muscle contractions or "muscle distress" during the procedure. Without muscle relaxation, muscle contractions during the procedure could cause injury or severe discomfort.