Equations Flashcards Preview

Pulmonology > Equations > Flashcards

Flashcards in Equations Deck (5)
Loading flashcards...
1
Q

Volume of Physiologic Dead Space

A

VD = VT x [(PaCO2 - PECO2) / PaCO2]

2
Q

Minute Ventilation

A

Minute Ventilation = VT x breaths / min

3
Q

Alveolar Ventilation

A

VA = (VT - VD) x breaths/min

4
Q

Alveolar Gas Equation

A

PAO2 = PIO2 - (PACO2/R)

R = VCO2 / VO2

5
Q

How do you calculate PIO2?

A

PIO2 = (PATM - PH2O) x 0.21

PH2O = 47 mm Hg

0.21 is the fractional percent for O2 of ATM