What is the final answer choice indicating the hemodynamic effect of IV vasodilators in acute decompensated heart failure?

What is the final answer choice indicating the hemodynamic effect of IV vasodilators in acute decompensated heart failure?

• A. It increases preload
• B. It has no effect on hemodynamics
• C. It worsens edema
• D. It decreases preload and afterload

Answer: (D)

IV vasodilators in acute decompensated heart failure relieve congestion by relaxing vascular smooth muscle, which lowers both the amount of blood returning to the heart (preload) and the resistance the heart must pump against (afterload). Decreased preload reduces filling pressures and pulmonary congestion, helping to relieve edema. Decreased afterload makes it easier for the weakened ventricle to eject blood, improving forward flow and overall cardiac output. That combination—lower preload and lower afterload—best matches the hemodynamic goal of these drugs in this situation.

IV vasodilators in acute decompensated heart failure relieve congestion by relaxing vascular smooth muscle, which lowers both the amount of blood returning to the heart (preload) and the resistance the heart must pump against (afterload). Decreased preload reduces filling pressures and pulmonary congestion, helping to relieve edema. Decreased afterload makes it easier for the weakened ventricle to eject blood, improving forward flow and overall cardiac output. That combination—lower preload and lower afterload—best matches the hemodynamic goal of these drugs in this situation.