High Yield Respiratory Videos That You Must See

Partial Pressure of Oxygen and Carbon Dioxide

V/Q Mistmatch & A-a Gradient

• PERFUSSION = O2 exchange between Alveolar O2 -> arterial O2
• DIFFUSSION = CO2 exchange between arterial CO2 -> Alveolar CO2
• High V/Q difference: Chronic bronchitis, pneumonia
• Zero V/Q difference = 0/Q = 0 = shunt: Pulmonary edema
• Low V/Q diference = V/0 = dead space: Pulmonary embolism