Physiology An increase in contractility is demonstrated on a Frank-Starling diagram by A Increased cardiac output for a given end-diastolic volume B Increased cardiac output for a given end-systolic volume C Decreased cardiac output for a given end-diastolic volume D Decreased cardiac output for a given end-systolic volume 💡 Explanation An increase in contractility is demonstrated on a Frank-Starling diagram by ✓ Correct Answer: A. Increased cardiac output for a given end-diastolic volume