PMC10344674_01
Bulging of posterior membrane of tracheal wall into the airway lumen. A, inspiratory view of the proximal trachea; B, expiratory view of the proximal trachea collapse.
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These findings are consistent with severe ECAC in the subtype of EDAC, as portrayed in Fig. 1.
Clinical and Cardiopulmonary Lab set up depicting motorized treadmill and rating of perceived exertion (RPE) scale used in this case study.
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We had the patient perform submaximal treadmill exercise (1.6 mph, 16% gradient) while CPAP was applied at 0 cmH2O (control), 9 cm H2O, and 11 cmH2O; each CPAP level was applied for 3 min (Fig. 2).