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Positive expiratory pressure - Common clinical applications and physiological effects
Uppsala University, Disciplinary Domain of Medicine and Pharmacy, Faculty of Medicine, Department of Medical Sciences, Clinical Physiology.
2015 (English)In: Respiratory Medicine, ISSN 0954-6111, E-ISSN 1532-3064, Vol. 109, no 3, 297-307 p.Article, review/survey (Refereed) Published
Abstract [en]

Breathing out against resistance, in order to achieve positive expiratory pressure (PEP), is applied by many patient groups. Pursed lips breathing and a variety of devices can be used to create the resistance giving the increased expiratory pressure. Effects on pulmonary outcomes have been discussed in several publications, but the expected underlying physiology of the effect is seldom discussed. The aim of this article is to describe the purpose, performance, clinical application and underlying physiology of PEP when it is used to increase lung volumes, decrease hyperinflation or improve airway clearance. In clinical practice, the instruction how to use an expiratory resistance is of major importance since it varies. Different breathing patterns during PEP increase or reduce expiratory flow, result in movement of EPP centrally or peripherally and can increase or decrease lung volume. It is therefore necessary to give the right instructions to obtain the desired effects. As the different PEP techniques are being used by diverse patient groups it is not possible to give standard instructions. Based on the information given in this article the instructions have to be adjusted to give the optimal effect. There is no consensus regarding optimal treatment frequency and number of cycles included in each treatment session and must also be individualized. In future research, more precise descriptions are needed about physiological aims and specific instructions of how the treatments have been performed to assure as good treatment quality as possible and to be able to evaluate and compare treatment effects.

Place, publisher, year, edition, pages
2015. Vol. 109, no 3, 297-307 p.
Keyword [en]
Breathing exercises, Physiology, Positive expiratory pressure
National Category
Cardiac and Cardiovascular Systems
URN: urn:nbn:se:uu:diva-252400DOI: 10.1016/j.rmed.2014.11.003ISI: 000351647000002OAI: oai:DiVA.org:uu-252400DiVA: diva2:810215
Available from: 2015-05-06 Created: 2015-05-06 Last updated: 2015-05-06Bibliographically approved

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Westerdahl, Elisabeth
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