The most appropriate method for improving oxygenation during one lung anaesthesia, after institution of an FiO2 of 1.0, is application of
A. 5 cm H2O CPAP to the non-dependent lung
B. 10 cm H2O CPAP to the non-dependent lung
C. 5 cm H2O PEEP to the dependent lung
D. 5 cm H2O CPAP to the non-dependent and 5cm H2O PEEP to the dependent lung
E. intermittent re-inflation to the non-dependent lung
Answer: C