Surfactant phospholipid measurements
Surfactant phosphatidylcholine (PC) was extracted from tracheal aspirate samples and analysed over time. The surfactant group able to augment total aspirate PC pool from 44.7% at t = 0 h to a maximum value of 80.2% after nebulisation. This was evident for both surfactant groups (cohort 1 + 2 and cohort 2 + 3). There was a steady decline in total PC concentration over time (Fig. Phosphatidylcholine concentration in tracheal aspirates. (