Ventilation
thorax
expiration
Surfactant
Surfactant
compliance
Compliance
Compliance
Gas exchange
Diffusion
Oxygenation
diffusion
100
40
PO2
PaO2
PCO2
PaCO2
Pressure Gradient
Pressure gradient
diffusion
diffusion
O2
hemoglobin
physiological
60
PaO2
80-100
ABGs
PaO2
Perfusion
Systemic
SV x HR = CO
4-8
70-100
70
gravity
hypoxemia
Blood
Refractory hypoxemia
decreases
lower
Pulmonary Vascular Resistance (PVR)
pulmonary
cardiac output