Page 120 - Physiological based CPAP for preterm infants at birth Tessa Martherus
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Chapter 5
Intra-uterine
lung liquid
Establishing lung aeration
air flows in, liquid moves out
alveolus
Initial higher CPAP levels
to overcome high airway resistance
Maintaining lung aeration
lung liquid flows back
alveolus
Then lower CPAP levels to match increased interstitial pressure and lung recoil
Figure 1. Physiological based CPAP. Image by Lisanne Tollenaar. 116
alveolus
