Which medication prescribed for acute heart failure would the nurse question?

• A. Angiotensin receptor blocker
• B. Beta blocker
• C. Diuretic
• D. Long-acting nitrate

Answer: (B)

The main idea here is how medications affect the heart's ability to pump during an acute decompensation. In acute heart failure, the priority is to improve perfusion and relieve congestion without further lowering the heart’s pumping ability.

Beta blockers slow the heart rate and reduce the force of contraction. In an acutely decompensated state, the heart is already struggling to maintain adequate output. Adding a drug that dampens contractility and lowers blood pressure can dramatically reduce cardiac output and worsen symptoms like hypotension or shock. That’s why a beta blocker would be questioned or withheld during the acute phase; reintroduction is typically considered only after stabilization.

The other options align more with acute management. An angiotensin receptor blocker helps reduce afterload, which can ease the heart’s workload. A diuretic rapidly removes excess fluid and congestion, a key goal in acute decompensation. A long-acting nitrate is not ideal for immediate relief in the ED because its onset is slower and it’s better suited for chronic management rather than the acute course, though it can play a role in ongoing therapy.

So the reason the beta blocker is the best choice to question is its potential to worsen hemodynamics by decreasing contractility and blood pressure in the acute phase, which contrasts with the more immediately beneficial actions of the other medications in acute heart failure.