The application of CPAP maintains PEEP, can decrease atelectasis, increases the surface area of the alveolus, improves V/Q matching, and hence, improves oxygenation.

Does CPAP help oxygen levels?

CPAP therapy corrects low levels of oxygen in the blood and reduces pauses in breathing. CPAP provides a steady flow of air through a facemask that is worn while sleeping.

Does CPAP improve lung function?

Previous studies have shown that the use of CPAP improves lung function, gas exchange and respiratory muscle function, and decreases the risk of hospitalisations in patients with COPD plus OSAS 13, 14.