A client with a history of heart failure has been referred for an echocardiogram
Results of this diagnostic test reveal the following findings: heart rate 80 beats/minute; end-diastolic volume 120 mL; and end-systolic volume 60 mL. What is this client's ejection fraction?
A) 200 mL
B) 50%
C) 0.80
D) 180 mL
Ans: B
Feedback:
Ejection fraction = stroke volume ÷ end-diastolic volume, whereas stroke volume equals the difference between end-diastolic and end-systolic volume. Therefore, EF = 60 ÷ 120, or 50%.
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