Calculations Flashcards
Cardiac Index
C.I.
Cardiac Index
C.O. / BSA (M2 )
Predicted body weight
PBW
Male PBW = 50 + (2.3 x (height - 60))
Female PBW = 45.5 + (2.3 x (height - 60))
Static Compliance
Static Compliance
Dynamic Compliance
Dynamic Compliance
Exhaled VT / Peak Pressure - Peep
Pulse Pressure
Pulse Pressure
Systolic - Diastolic
Arterial Oxygen Content
CaO2
CaO2
(Hb x 1.34 x SaO2) + (PaO2 x 0.003)
Alveolar Oxygen Tension
PAO2
PAo2
((PB - PH20) x FIO2) - PaCO2 / O.8
Deadspace Ratio
VD / VT
VD/VT
PaCO2 - PECO2 x 10 / PaCO2
Arterial - Venous Oxygen Content Difference
C(a-v)O2
C(a-v)O2
CaO2 - CVO2
Shunt Equation
QS /QT
Shunt Equation (QS / QT)
(A-aDO2 x 0.003) / ((A-aDO2) x 0.003) + C(a-v)O2
Venous Oxygen Content
CVO2
CVO2
(Hb x 1.34 x SVO2) - (PVO2 x 0.003)
VO2
oxygen consumption
VO2 (Oxygen Consumption)
QT x C(a-v)O2 x 10
Alveolar Ventilation
VA
Alveolar Ventilation (VA)
(VT - VD) x RR
note: estimated VD = 1cc/lb of IBW
Maximum Suction Cather Size
Maximum Suction Cather Size
ET tube ID x 3 / 2
PaO2 / FIO2
P/F ratio
PaO2 / FIO2 (P/F ratio)
PaO2 / FIO2