A 30-year-old man has a ventricular ejection fraction of 60 percent. His end-diastolic volume is 120 mL. What is his stroke volume?
Answer and explanation
Correct answer: C. 72 mL
- Step 1: Stroke volume = ejection fraction x end-diastolic volume = 0.6 x 120. Answer: 72 mL. Why not the others: 48 mL is the end-systolic volume and 120 mL is the end-diastolic volume.
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