Shock and heart failure · Physiology

The Frank-Starling mechanism in heart failure initially:

  1. Decreases stroke volume
  2. Raises output via increased preload
  3. Prevents progressive ventricular dilation
  4. Inhibits sympathetic nervous activity
Show answer and explanation

Correct answer: Raises output via increased preload

Increased preload stretches myocardial fibers, improving contraction. This mechanism helps compensate in early heart failure.

Difficulty: Medium Question 17 of 20

Practice all 20 Shock and heart failure questions

Keep practicing

More Shock and heart failure questions