Anatomy & Physiology Question #41
The nurse is caring for a patient with congestive heart failure. Which factor is least likely to increase stroke volume in this patient?
- ESV: end-systolic volume
- Cardiac output - amount of blood pumped per heartbeat
- EDP: end-diastolic volume
- Sympathetic stimulation of the myocardium
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.