Review
doi: 10.1016/s0272-5231(05)70322-1.
Auto-positive end-expiratory pressure and dynamic hyperinflation
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- PMID: 8875002
- DOI: 10.1016/s0272-5231(05)70322-1
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Review
Auto-positive end-expiratory pressure and dynamic hyperinflation
Clin Chest Med.
1996 Sep.
Abstract
PEEP is indicated in patients with COPD only to unload the respiratory muscles from the auto-PEEP resulting from expiratory flow limitation. If auto-PEEP is not caused by flow limitation, application of PEEP will cause further hyperinflation, worsening respiratory mechanics, muscle activity, and hemodynamics. To assess the presence of expiratory flow limitation correctly, to measure auto-PEEP correctly, and to identify the maximal PEEP level to be used, measurements of flow and opening pressure must be obtained during a brief period of suspended respiratory muscle activity (obtained by sedation) with the patient's own breathing pattern reproduced accurately.
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