Biology · Challenge

1/4
Cardiac pulseRunning
Circulation loop. Heart rate at 147 bpm. Cardiac output 10.58 L/min, Required output 5.4 L/min. Currently cardiac output is over by 5.18 L/min.TUNING10 s shown · 147 beats in 1 min
t = 0.0s

Cardiac output

10.58L/min

Required output

5.4L/min

Cardiac output is over by 5.18 L/min

147 bpm

Circulation loop. Heart rate at 147 bpm. Cardiac output 10.58 L/min, Required output 5.4 L/min. Currently cardiac output is over by 5.18 L/min.

What has to balanceCO=HR×SVCO = HR \times SV

What is happening

You take control of a marathon medical tent assessing a collapsed runner.

The runner’s output is short. They need 5.4 L per minute of cardiac output, each beat pushes 72 mL, and the assumed heart rate is wrong.