Distinguish hypertensive urgency from hypertensive emergency and outline a management principle to avoid excessive BP reductions.

• A. Urgency: severe BP elevation without acute target-organ damage; Emergency: severe BP with organ dysfunction; treat emergencies with IV agents in controlled fashion; aim for not more than a 20–25% reduction in the first hour to avoid hypoperfusion.
• B. Urgency: severe BP elevation with acute organ damage; Emergency: not.
• C. They are the same.
• D. Emergency should be treated with oral agents only.

Answer: (A)

Hypertensive crisis is defined by whether there is acute target-organ damage. In a hypertensive urgency, BP is severely elevated but there is no evidence of organ injury. In a hypertensive emergency, there is acute target-organ dysfunction such as encephalopathy, stroke, myocardial ischemia or infarction, acute heart failure with pulmonary edema, acute kidney injury, or aortic dissection.

The management principle for a hypertensive emergency is controlled, rapid BP reduction using intravenous titratable antihypertensives with close monitoring. The goal is to lower mean arterial pressure by about 20–25% in the first hour to avoid hypoperfusion of already stressed organs. After stabilization, further gradual reductions can be pursued to reach safer targets over the next hours, tailored to the specific problem. Note that certain conditions (like aortic dissection) may require different, more aggressive rapid reductions, but the general approach emphasizes safety through controlled lowering.

The other statements are inconsistent with this distinction: urgency does not involve acute organ damage, they are not the same category, and emergencies are not treated with oral agents only.