[Mechanics of breathing and exertion dyspnea in silicosis (author's transl)].
Mechanics of breathing as studied in patients with different stages of silicosis in rest and during exercise show the following: dynamic compliance and work against elastic and viscous resistances could not be found to be decisive indices of exertion dyspnea. Evidence of exertion dyspnea could only be achieved by means of the ration VT/PT (VT equals tidal volume, PT equals tidal esophageal pressure). Exertion dyspnea was observed at less than 0,081 VT per cm H20 PT. In accordance with Campbell and Howell, dyspnea is seen as an inappropriateness between ventilation and pressure needed.
D004417:Dyspnea / Q000209:etiology; D004947:Esophagus; D006801:Humans; D008170:Lung Compliance; D005082:Physical Exertion; D011312:Pressure; D012119:Respiration; D012829:Silicosis / Q000503:physiopathology*; D013147:Spirometry
Atemmechanik und Belastungsdyspnoe bei Silikose