Detection of diaphragmatic fatigue in man by phrenic stimulation.

  title={Detection of diaphragmatic fatigue in man by phrenic stimulation.},
  author={Michel Aubier and Gyula Farkas and Andr{\'e} De Troyer and R S Mozes and Ch. Roussos},
  journal={Journal of applied physiology: respiratory, environmental and exercise physiology},
  volume={50 3},
Transdiaphragmatic pressure (Pdi) was measured at functional residual capacity (FRC) in four normal seated subjects during supramaximal, supraclavicular transcutaneous stimulation of one phrenic nerve (10, 20, 50, and 100 Hz--0.1 ms duration) before and after diaphragmatic fatigue, produced by breathing through a high alinear inspiratory resistance. Constancy of chest wall configuration was achieved by placing a cast around the abdomen and the lower one-fourth of the rib cage. Pdi increased… CONTINUE READING
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