Studydroid is shutting down on January 1st, 2019



keywords:
Bookmark and Share



Front Back
Calc of PO2 in room air (O2 tension)
  • PO2 = Pb x FIO2
  • Ex: PO2 = 747 torr x .21    PO2 = 156.87 torr
   
Calc Minute volume
  • V = Vt x RR
  • Vt = tidal volume
  • Normal V = 10L/minute
Calc Compliance
  • Change in volume divided by change in pressure
  • Ex: Volume goes from 600ml to 1000ml
  • C = 400ml / 10 cmH2O = 40 ml/cmH2O
  • lower is less compliant
Alveolar air equation
  • FIO2 x (Pb -PH20) - PaCO2 / R
  • Ex room air at sea level
  • .21 x (760mmHg - 47mmHg) - 40mmHg/.8
  • .21 x 713mHg - 50mmHg
  • 149.7mmHg - 50 mmHg
  • 99.7 mmHg
Calc O2 content
  • (gm Hb x %sat x 1.34) + (PaO2 x .003)
  • Normal value 17-20%
x of y cards