A patient is experiencing difficulty falling asleep and is prescribed a hypnotic medication.
Which of the following should the nurse assess before administration?

Choice A rationale

Giving the insulin is not safe because there is a possibility the patient has already received it, even though the record is not signed. Administering a second dose of insulin could lead to hypoglycemia, a life-threatening condition where the blood glucose level drops dangerously low, causing symptoms like confusion, seizures, and unconsciousness.

Choice B rationale

Holding the insulin is the initial safe action, but simply holding it doesn't resolve the issue and leaves the patient's care plan incomplete. The primary concern is the potential for a double dose and the lack of proper documentation. The problem requires a more formal and structured response than simply holding the medication and moving on.

Choice C rationale

Contacting the night nurse is an option, but it is not the most immediate or appropriate action. The night nurse may be asleep or unreachable. The nurse on duty is responsible for the patient's safety and should follow proper chain of command and reporting protocols to resolve the issue promptly and ensure patient safety.

Choice D rationale

This situation involves a medication discrepancy, a potential medication error, and a significant safety risk to the patient. Reporting it to the nursing supervisor is the correct and necessary action. The supervisor can initiate a formal investigation, ensure the patient is safe, and address the documentation issue to prevent future errors.

Choice A rationale

Digoxin is a cardiac glycoside that increases myocardial contractility and stroke volume, leading to improved cardiac output. It primarily affects the heart's pumping ability and heart rate, but it is not the main drug used to reduce both preload and afterload. Its role is more to manage symptoms of heart failure and improve cardiac output.

Choice B rationale

ACE inhibitors (e.g., lisinopril) work by blocking the conversion of angiotensin I to angiotensin II, a potent vasoconstrictor. This leads to vasodilation, which decreases both systemic vascular resistance (afterload) and venous pressure (preload), making them a cornerstone for treating heart failure and reducing the workload on the heart.

Choice C rationale

Beta-blockers (e.g., carvedilol) block the effects of epinephrine and norepinephrine on beta receptors, leading to a decrease in heart rate and contractility. This reduces myocardial oxygen demand and can improve ventricular remodeling over time in heart failure, but they do not primarily reduce both preload and afterload in the same way as ACE inhibitors.

Choice D rationale

Diuretics (e.g., furosemide) work by increasing the excretion of sodium and water from the body, which reduces blood volume. This primarily reduces preload (volume returned to the heart) and is used to manage symptoms like edema and congestion, but it is not as effective at reducing afterload as ACE inhibitors.