A nurse is collecting data from a client who has a history of angina and reports having a dull chest pressure that radiates to the left side of his neck. Which of the following is the priority medication the nurse should anticipate the provider prescribing?

A. Nitroglycerin: Nitroglycerin is a rapid-acting nitrate used to relieve acute angina by dilating coronary arteries and reducing myocardial oxygen demand. For a client presenting with chest pressure radiating to the neck, immediate symptom relief and prevention of ischemic injury make nitroglycerin the priority medication. B. Nifedipine: Nifedipine is a calcium channel blocker primarily used for hypertension and variant (Prinzmetal) angina. It is not the first-line choice for acute anginal episodes requiring immediate symptom relief. C. Clopidogrel: Clopidogrel is an antiplatelet agent used for long-term prevention of thrombotic events in clients with coronary artery disease. It does not provide immediate relief for acute anginal pain. D. Atenolol: Atenolol is a beta-blocker that decreases heart rate and myocardial oxygen consumption for long-term angina management. It is not indicated as first-line therapy for acute chest pain episodes.