What would be the heart rate of a person if the cardiac output is 5L, blood volume in the ventricles at the end of diastole is 100mL and at the end of ventricular systole is 50mL?
- A50 beats per minute
- B75 beats per minute
- C100 beats per minute
- D125 beats per minute
Solution & Step-by-step Explanation
1. Stroke Volume (SV) = End Diastolic Volume (EDV) - End Systolic Volume (ESV).
SV=100mL−50mL=50mL=0.05L.
2. Cardiac Output (CO) = Stroke Volume × Heart Rate (HR).
5L=0.05L×HR.
HR=
0.05
5
=100 beats per minute.
SV=100mL−50mL=50mL=0.05L.
2. Cardiac Output (CO) = Stroke Volume × Heart Rate (HR).
5L=0.05L×HR.
HR=
0.05
5
=100 beats per minute.