A nurse is assisting with the care of a client following electroconvulsive therapy for the treatment of a depressive disorder. Which of the following findings should the nurse expect 15 min following the procedure?

A. Place a pillow under the child's head: This is correct. The nurse should place a soft object, such as a pillow or folded blanket, under the child’s head to prevent head injury during a seizure. It is important to protect the patient from harm without interfering with the seizure.

B. Turn the child onto their back: This is not advisable during a seizure. The child should remain in a safe position, preferably on their side to help maintain the airway and prevent aspiration. Turning onto their back is not a first-line intervention.

C. Place a padded tongue blade in the child's mouth: This is incorrect. A padded tongue blade should never be inserted into the mouth during a seizure, as it can cause dental or oral injury, and may lead to aspiration or choking.

D. Restrain the child's upper extremities: Restraining the child is not recommended during a seizure. The child should not be physically restrained during the event, as this could cause injury or increase the risk of aspiration. The nurse should focus on providing safety and not interfering with the natural movements during a seizure.

A. Give a dose of alendronate is incorrect. Alendronate is a medication used to treat osteoporosis, and it does not address low potassium levels. In this case, the focus should be on correcting the potassium imbalance.

B. Administer furosemide is incorrect. Furosemide is a diuretic that can cause further loss of potassium. In a client with low potassium levels (hypokalemia., administering furosemide could worsen the condition and lead to life-threatening complications.

C. Apply a cardiac monitor is correct. Hypokalemia (potassium level of 2.9 mEq/L) can cause significant cardiac arrhythmias, including ventricular tachycardia or fibrillation. Applying a cardiac monitor is essential for monitoring the client’s heart rhythm and detecting any abnormalities related to the low potassium level.

D. Monitor for Chvostek's sign is incorrect. Chvostek's sign is indicative of hypocalcemia, not hypokalemia. While both hypocalcemia and hypokalemia can cause neuromuscular excitability, monitoring for Chvostek’s sign is not a priority in the management of hypokalemia.