In type - II respiratory failure, there is :
Answer is B (Low PO2 and high PCO2): Type II respiratory failure (or pump failure) is characterized by decreased Pa02 and increased PaCO2 as a result of alveolar hypoventilation. There is a fall in minute ventilation which causes a rise in PaCO2 and fall in Pa02. The alveolar aerial gradient (PaO2 is normal). Type I Respiratory failure Hypoxemia with decreased PaCO2 Type II Respiratory failure Hypoxemia with increased PaCO2
Low pO2 and low pCO2
Low pO2 and high pCO2
Normal pO2 and high pCO2
Low pO2 and normal pCO2