If EDV is 130 mL and ESV is 60 mL, what is stroke volume (SV)?

If EDV is 130 mL and ESV is 60 mL, what is stroke volume (SV)?

• A. 70 mL
• B. 60 mL
• C. 130 mL
• D. 190 mL

Answer: (A)

Stroke volume is how much blood the ventricle ejects with each heartbeat. It equals end-diastolic volume minus end-systolic volume. With EDV of 130 mL and ESV of 60 mL, 130 − 60 = 70 mL. So the stroke volume is 70 mL per beat. This value ties into cardiac output when you multiply by heart rate. (The numbers 60 mL and 130 mL correspond to ESV and EDV, while 190 mL would be a sum, not SV.)

Stroke volume is how much blood the ventricle ejects with each heartbeat. It equals end-diastolic volume minus end-systolic volume. With EDV of 130 mL and ESV of 60 mL, 130 − 60 = 70 mL. So the stroke volume is 70 mL per beat. This value ties into cardiac output when you multiply by heart rate. (The numbers 60 mL and 130 mL correspond to ESV and EDV, while 190 mL would be a sum, not SV.)