Soft palate muscle responses to negative upper airway pressure

Department of Respiratory Medicine, Westmead Hospital, and University of Sydney, Westmead, New South Wales 2145, Australia The afferent pathways and upper airway receptor locations involved in negative upper airway pressure (NUAP) augmentation of soft palate muscle activity have not been defined. We...

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Bibliographic Details
Published in:Journal of applied physiology (1985) 1999-02, Vol.86 (2), p.523-530
Main Authors: Amis, T. C, O'Neill, N, Wheatley, J. R, van der Touw, T, di Somma, E, Brancatisano, A
Format: Article
Language:English
Subjects:
Anatomy & physiology
Animals
Biological and medical sciences
Dogs
Electromyography
Female
Fundamental and applied biological sciences. Psychology
Laryngeal Muscles - physiology
Male
Palatal Muscles - physiology
Palate, Soft - physiology
Pressure
Recruitment, Neurophysiological - physiology
Reflex - physiology
Respiratory Mechanics - physiology
Respiratory system
Striated muscle. Tendons
Ventilators, Negative-Pressure
Vertebrates: osteoarticular system, musculoskeletal system
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Summary:Department of Respiratory Medicine, Westmead Hospital, and University of Sydney, Westmead, New South Wales 2145, Australia The afferent pathways and upper airway receptor locations involved in negative upper airway pressure (NUAP) augmentation of soft palate muscle activity have not been defined. We studied the electromyographic (EMG) response to NUAP for the palatinus, tensor veli palatini, and levator veli palatini muscles in 11   adult, supine, tracheostomized, anesthetized dogs. NUAP was applied to the nasal or laryngeal end of the isolated upper airway in six dogs and to four to six serial upper airway sites from the nasal cavity to the subglottis in five dogs. When NUAP was applied at the larynx, peak inspiratory EMG activity for the palatinus and tensor increased significantly ( P  
ISSN:8750-7587
1522-1601
DOI:10.1152/jappl.1999.86.2.523