Correct Answer: C

Rationale: The correct answer is C: Electrocardiogram. Amitriptyline can cause cardiac arrhythmias, so an electrocardiogram is necessary before starting treatment. A hearing examination (choice A) is not required before initiating amitriptyline. A glucose tolerance test (choice B) is not indicated for starting this medication. Pulmonary function tests (choice D) are not necessary before initiating amitriptyline for depression.

Correct Answer: B

Rationale: Nifedipine is the correct choice because it is a calcium channel blocker that helps relax the uterus and stop preterm labor. Oxytocin (Choice A) is used to induce labor, not to stop preterm labor. Dinoprostone (Choice C) and Misoprostol (Choice D) are prostaglandins used to induce labor and ripen the cervix, not to stop preterm labor.

Correct Answer: D

Rationale: The correct action for the nurse to take first is to check the client's apical pulse. Nausea can be a sign of digoxin toxicity, and one of the early signs of digoxin toxicity is changes in the pulse rate. By checking the client's apical pulse, the nurse can assess if the digoxin level is too high. Encouraging the client to eat or administering an antiemetic may not address the underlying issue of digoxin toxicity. While informing the provider is important, assessing the client's condition through checking the apical pulse should be the immediate priority.

Correct Answer: D

Rationale: Clients taking digoxin and furosemide are at risk for hypokalemia. Eating potassium-rich foods can help maintain normal potassium levels.

Correct Answer: A

Rationale: Insulin glulisine has a rapid onset of action, typically around 15 minutes. Therefore, the nurse should expect the onset around 0745. Choice A is correct as it aligns with the expected onset time. Choices B, C, and D are incorrect as they do not match the typical onset time of insulin glulisine.