In a hypertensive crisis, what is the correct approach when administering IV vasodilators?

• A. Lower BP rapidly to normal
• B. Administer IV vasodilators only
• C. Wait and recheck in 24 hours
• D. Administer IV vasodilators and lower BP slowly

Answer: (D)

In a hypertensive crisis, the priority is to reduce blood pressure promptly but gradually to prevent ongoing organ injury while avoiding hypoperfusion. Start IV vasodilator therapy and titrate to achieve a controlled drop—about a 20-25% reduction in the first hour, then continue lowering toward a target like 160/100–110 mmHg as clinically appropriate. This quick yet careful approach protects the heart, brain, and kidneys from further damage while ensuring tissues aren’t underperfused.

Lowering BP rapidly to normal can cause ischemia by suddenly reducing perfusion pressure. Waiting 24 hours ignores the urgency of the crisis. Using IV vasodilators without proper titration also risks unsafe drops or fluctuations. The best approach is IV vasodilators with slow, controlled BP reduction.