CPAP devices are an effective therapy for patients with compromised alveoli. During the inspiratory phase of respiration, oxygen-rich gas is supplied at flow rates high enough to increase airway pressure. During the expiratory phase, the patient exhales against a resistance called Positive End Expiratory Pressure (PEEP). The combination of positive inspiratory and positive expiratory pressure can help reduce the work of breathing and improve alveolar gas exchange.
Miller III, R. R., MacIntyre, N. R., Hite, R., Truwit, J. D., Brower, R. G., & Morris, A. H. (2012). Rebuttal from Dr. Miller et al. Chest, 141(6), 1384-1386. doi:10.1378/chest.12-0516 The article focuses on the combination of positive end-expiratory pressure (PEEP) and FIO2 to address the acute respiratory distress syndrome (ARDS).
This medical exhibit describes the circulatory system impaired by a positive end expiratory pressure (PEEP) value over 15. The illustration consists of five images. The first image is a schematic diagram of the respiratory system and vascular network. The second image is a schematic of a PEEP reading. The third image is a transverse section through the thorax. The fourth image is a microscopic view of alveoli. The fifth image is a microscopic view of a blood vessel.