Which drug is specifically administered to manage a hypertensive emergency_______________?
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Answer: A. NIfedipine
Explanation
Nifedipine is a calcium channel blocker historically administered orally or sublingually for rapid blood pressure reduction. Hypertensive emergencies demand immediate intervention to prevent acute target organ damage in vulnerable vascular beds. The rapid vasodilation caused by nifedipine successfully lowers systemic vascular resistance during acute hypertensive crises. Calcium channel blockers inhibit the influx of calcium ions into vascular smooth muscle cells and cardiac tissue. Hypertensive emergencies involve severely elevated blood pressure accompanied by ongoing evidence of vital organ dysfunction. Uncontrolled blood pressure can precipitate catastrophic cardiovascular events such as stroke, myocardial infarction, or aortic dissection.
Isosorbide dinitrate is a venous dilator primarily utilized for managing angina pectoris rather than emergencies. Verapamil acts predominantly on cardiac conduction and myocardium, making it less ideal for acute vasodilation. Digoxin increases myocardial contractility and slows heart rate, serving primarily in heart failure and atrial fibrillation.
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