Question

Calculate Q̇ for the following individual (Sex: male; age: 40 yr; mass: 75 kg; EDV: 180...

  1. Calculate Q̇ for the following individual (Sex: male; age: 40 yr; mass: 75 kg; EDV: 180 mL; HR: 180 bpm; SBP: 150 mmHg; EF: 70%)
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Answer #1

As , Q can be calculated by the formula ,  

Q = SV x HR ------------equation (1)

SV = stroke volume

HR = Heart rate

since , stroke volume is the difference between end distolic pressure (EDV) and end systolic pressure ( ESV)

SV = EDV - ESV  

Ejection factor (EF) = SV / EDV x 100%

SV = ( EF x EDV ) / 100%

Put this SV value in in the equation (1)

  

Q = ( EF x EDV x HR ) / 100%

Q = ( 70%   x 180 mL x 80 bpm ) / 100%

Q = 10080

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