Equations Flashcards by Drew Kropilak

Q

Volume of Physiologic Dead Space

A

V_{D =}V_Tx [(Pa_CO2 - PE_CO2) / Pa_CO2]

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Q

Minute Ventilation

A

Minute Ventilation = V_T x breaths / min

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Q

Alveolar Ventilation

A

V_A = (V_T - V_D) x breaths/min

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Q

Alveolar Gas Equation

A

PA_O2= PI_O2- (PA_CO2/R)

R = V_CO2/ V_O2

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Q

How do you calculate PI_O2?

A

PI_O2= (P_ATM - P_H2O) x 0.21

P_H2O= 47 mm Hg

0.21 is the fractional percent for O2 of ATM

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