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  • Title: Pneumomediastinum, pneumothorax and subcutaneous emphysema following the measurement of maximal expiratory pressure in a normal subject.
    Author: Manço JC, Terra-Filho J, Silva GA.
    Journal: Chest; 1990 Dec; 98(6):1530-2. PubMed ID: 2245704.
    Abstract:
    Mediastinal and subcutaneous emphysema have been reported as a consequence of deliberate manipulations of the breathing pattern producing a Valsalva-like maneuver in healthy subjects. We present a case of pneumomediastinum, pneumothorax and subcutaneous emphysema occurring in a normal volunteer after repeated measurements of the PEmax.
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