Upper airway pressur flow – relationships in horses with laryngeal hemiplegia
نویسندگان
چکیده
منابع مشابه
Modulation of laryngeal and respiratory pump muscle activities with upper airway pressure and flow.
The hypothesis that upper airway (UA) pressure and flow modulate respiratory muscle activity in a respiratory phase-specific fashion was assessed in anesthetized, tracheotomized, spontaneously breathing piglets. We generated negative pressure and inspiratory flow in phase with tracheal inspiration or positive pressure and expiratory flow in phase with tracheal expiration in the isolated UA. Sti...
متن کاملIncreased frequency dependence of specific airway resistance in patients with laryngeal hemiplegia.
The aim of this study was to investigate whether patients with laryngeal hemiplegia (LH) show a frequency-dependent increase in specific airway resistance (sRaw), measured by body plethysmography. In addition to the flow-volume loop, usually considered in the functional evaluation of upper airway obstructions, variations in sRaw at respiratory frequencies of 30+/-5 (=0.5 Hz), 60+/-5 (=1 Hz) and...
متن کاملA comparison of laryngoplasty and modified partial arytenoidectomy as treatments for laryngeal hemiplegia in exercising horses.
OBJECTIVE To compare upper airway mechanics, arterial blood gases, and tracheal contamination in horses with induced left laryngeal hemiplegia (recurrent laryngeal neuropathy [RLN]) treated by laryngoplasty/vocal cordectomy (LPVC) or modified partial arytenoidectomy (MPA). STUDY DESIGN Repeated measures under the following conditions: Control, RLN, LPVC, and MPA. ANIMALS Six horses. METHO...
متن کاملUpper airway function during maximal exercise in horses with obstructive upper airway lesions. Effect of surgical treatment.
Upper airway pressure was measured during maximal exercise in 10 Thoroughbred racehorses with naturally occurring upper airway obstruction. Left laryngeal hemiplegia and arytenoid chondropathy resulted in substantial increases (30-40 cm H2O) in inspiratory upper airway pressure (Pl), whereas complicated aryepiglottic entrapment and subepiglottic cysts produced only modest increases (15 cm H2O) ...
متن کاملLaryngeal muscle response to phasic and tonic upper airway pressure and flow
Stella, M. H., and S. J. England. Laryngeal muscle response to phasic and tonic upper airway pressure and flow. J Appl Physiol 91: 905–911, 2001.— The hypothesis that respiratory modulation due to upper airway (UA) pressure and flow is dependent on stimulus modality and respiratory phase-specific activation was assessed in anesthetized, tracheotomized, spontaneously breathing piglets. Negative ...
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ژورنال
عنوان ژورنال: Pferdeheilkunde Equine Medicine
سال: 1985
ISSN: 0177-7726
DOI: 10.21836/pem19850722