Respiratory muscle coordination in acute spinal dogs

摘要: Abstract Our objectives were (1) to test whether respiratory muscles of spinal dogs can generate the alternating pattern activation seen in intact animals and (2) characterize responsiveness rhythms mechanical ventilation. We recorded electromyographic activities inspiratory (diaphragm parasternal intercostals) expiratory (triangularis sterni transversus abdominis) ten anesthetized before after transection cervical cord at levels C1–C2 (n = 2), C2–C3 6), C8 2). In 9 10 dogs, we observed short lasting (3–4 min) rhythmic ventilatory muscle activity for up 3 h transection. Inspiratory contracted simultaneously, suggesting an absence mechanism(s) responsible reciprocal on a level. Five showed tonic rib cage during apnea that was phasically modulated From acute spinalized conclude do not have generator respiration.