In stable heart failure, which statement best describes preload management?

• A. Maximize preload to increase stroke volume
• B. Preload should be reduced to near zero
• C. Achieve euvolemia and avoid fluid overload while preserving perfusion.
• D. Preload does not affect HF.

Answer: (C)

In stable heart failure, preload management means keeping the patient’s fluid status at a level that provides enough filling to maintain cardiac output without causing congestion. Preload is the filling pressure of the ventricles at the end of diastole; when there’s too much fluid, filling pressures rise, leading to edema and pulmonary congestion. If preload is too low, the stroke volume drops and perfusion suffers. The goal is euvolemia—neither fluid overload nor dehydration—to preserve adequate perfusion while avoiding congestive symptoms. This is typically achieved with careful diuretic therapy and fluid assessment (weight, edema, JVD, blood pressure, kidney function) to remove excess fluid when needed but maintain enough preload to support cardiac output. Maximizing preload would worsen congestion, while reducing it to near zero would jeopardize perfusion, so the balance is best described as maintaining euvolemia and preserving perfusion.