Correct Answer: B

Rationale: Nitroglycerin is the medication typically prescribed to prevent angina attacks. It works by dilating blood vessels, increasing blood flow, and reducing the heart's workload, hence relieving angina symptoms. Aspirin is often used to prevent blood clots, Atenolol is a beta-blocker used to manage high blood pressure and chest pain, and Simvastatin is a statin medication primarily used to lower cholesterol levels.

Correct Answer: C

Rationale: The correct instruction for the nurse to reinforce with the client is to report any unusual bleeding or bruising to their healthcare provider. This is important because unusual bleeding or bruising may indicate excessive anticoagulation, a potential side effect of enoxaparin, and should be promptly addressed by a healthcare provider to prevent complications.

Correct Answer: B

Rationale: Nitroglycerin is a rapid-acting medication used to relieve angina pain by dilating blood vessels. The correct administration is to take one tablet every 5 minutes as needed, up to three doses. If chest pain persists after three doses, the client should seek emergency medical attention as it can indicate a more serious cardiac issue.

Correct Answer: A

Rationale: Nitroglycerin tablets are light and moisture-sensitive, so they should be stored in a cool, dry place away from light to maintain their effectiveness. Option B advises taking a tablet every 5 minutes, which may lead to overdose. Option C emphasizes the correct administration route for sublingual tablets. Option D is incorrect as water is not needed for the tablets to take effect.

Correct Answer: B

Rationale: An Electrocardiogram (ECG) is the most immediate and essential test to diagnose a myocardial infarction (MI) and assess the extent of heart damage. An ECG can quickly identify changes in the heart's electrical activity, allowing prompt initiation of appropriate interventions.