Anatomy & Physiology Question #41

Question

The nurse is caring for a patient with congestive heart failure. Which factor is least likely to increase stroke volume in this patient?

Answers

  1. ESV: end-systolic volume
    • Rationale:
  2. Cardiac output - amount of blood pumped per heartbeat
    • Rationale:
  3. EDP: end-diastolic volume
    • Rationale:
  4. Sympathetic stimulation of the myocardium
    • Rationale:

Overview

Explanation

The correct answer is D. Stroke volume index is determined by three factors: preload, contractility, and afterload. In addition the end systolic and diastolic volume also control stroke volume while the myocardium is the lining of the heart and does not have a place in controlling stroke volume.

Learning Outcomes

Test Taking Tip

Video Rationale