Continuous Positive Airway Pressure (CPAP)

Created on Tue, 06/16/2015 - 18:01
Last updated on Sat, 06/02/2018 - 18:18

CPAP: Continuous Positive Airway Pressure

The key feature is, there is no breath support. There is some PEEP being delivered, but generally its up to the patient to fight the tubes of the circuit to suck air from the cold indifferent ventilator. With no help whatsoever.

In fact, you can even turn the PEEP off.

 Also... CPAP is not PEEP. The two are not equivalent. CPAP is a spontaneous mode of ventilation with a continuous positive pressure maintained throughout the respiratory cycle- both expiratory and inspiratory. PEEP is a variable of the ventilation cycle, the positive pressure maintained at the end of expiration. CPAP has PEEP as a setting. 



Most of this information comes from only two textbooks. With "Basic Assessment and Support in Intensive Care" by Gomersall et al (as well as whatever I picked up during the BASIC course) as a foundation, I built using the humongous and canonical "Principles and Practice of Mechanical Ventilation" by Tobins et al – the 1442 page 2nd edition.

Harrison, M. J. "PEEP and CPAP." British medical journal (Clinical research ed.) 292.6521 (1986): 643.