Calculate cardiac output given an end-diastolic volume of 140 ml, an end-systolic volume of 60 ml, and a heart rate of 85 beats/minute
What will be an ideal response?
First, determine stroke volume. Stroke volume can be easily calculated by subtracting the amount of blood in the ventricle at the end of a contraction (the end-systolic volume, or ESV) from the amount of blood in the ventricle after it has filled during diastole (end-diastolic volume, or EDV).
SV = EDV ? ESV
= 140 ml ? 60 ml
= 80 ml
Next, determine cardiac output. To find the cardiac output, you simply multiply the heart rate by the stroke volume.
CO = HR × SV
= 85 beats/minute × 80 ml
= 6800 ml/min (or 6.8 L/min)
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