Bilevel positive airway pressure

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The setup for BPAP using a mechanical ventilator

Bilevel positive airway pressure (BPAP), commonly referred to by the trademarked names BiPAP and BIPAP, is a form of non-invasive mechanical pressure support ventilation that uses a time-cycled or flow-cycled change between two different applied levels of positive airway pressure.[1][2]

Bilevel positive airway pressure is used when positive airway pressure is needed with the addition of pressure support. Common situations where positive airway pressure is indicated are those where taking a breath is difficult. These include pneumonia, chronic obstructive pulmonary disease, asthma, status asthmaticus, and late stage amyotrophic lateral sclerosis.[3][4]

BPAP is different from continuous positive airway pressure (CPAP), which applies a single level of positive airway pressure throughout the whole respiratory cycle and is used for different clinical conditions.[1]


  1. ^ a b C. Hormann; M. Baum; C. Putensen; N. J. Mutz; H. Benzer (January 1994). "Biphasic positive airway pressure (BIPAP)--a new mode of ventilatory support". European Journal of Anaesthesiology. 11 (1): 37–42. PMID 8143712. 
  2. ^ Guy W Soo Hoo; David Geffen; Oleh Wasyl Hnatiuk; Francisco Talavera (6 June 2011). "Noninvasive Ventilation". Archived from the original on 7 June 2012. Retrieved 7 June 2012. 
  3. ^ Williams AM, Abramo TJ, Shah MV, Miller RA, Burney-Jones C, Rooks S, et al. (2011). "Safety and clinical findings of BiPAP utilization in children 20 kg or less for asthma exacerbations.". Intensive Care Med. 37 (8): 1338–43. PMID 21567114. doi:10.1007/s00134-011-2238-9. 
  4. ^ Beers SL, Abramo TJ, Bracken A, Wiebe RA (2007). "Bilevel positive airway pressure in the treatment of status asthmaticus in pediatrics.". Am J Emerg Med. 25 (1): 6–9. PMID 17157675. doi:10.1016/j.ajem.2006.07.001.