title: Interactions of mechanically induced coughing and sneezing in cat.
abstract: Mutual interactions of cough and sneeze were studied in 12 spontaneously breathing pentobarbitone anesthetized cats. Reflexes were induced by mechanical stimulation of the tracheobronchial and nasal airways, respectively. The amplitude of the styloglossus muscle EMG moving average during the sneeze expulsion was 16-fold higher than that during cough (p<0.01). Larger inspiratory efforts occurred during coughing (p<0.01) vs. those in sneeze. The number of reflexes during simultaneous mechanical stimulation of the nasal and tracheal airways was not altered significantly compared to controls (p>0.05) and there was no modulation in temporal characteristics of the behaviors. When both reflexes occurred during simultaneous stimuli the responses were classified as either sneeze or cough (no hybrid responses occurred). During simultaneous stimulation of both airway sites, peak diaphragm EMG and inspiratory esophageal pressures during sneezes were significantly increased. The expiratory maxima of esophageal pressure and amplitudes of abdominal EMGs were increased in coughs and sneezes during simultaneous mechanical stimulation trials compared to control reflexes.
authors.affiliation: Institute of Medical Biophysics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Malá Hora 4, 036 01 Martin, Slovak Republic. Electronic address: simera@jfmed.uniba.sk.
authors.forename: Michal
authors.initials: M
authors.lastname: Simera
authors.affiliation: Institute of Medical Biophysics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Malá Hora 4, 036 01 Martin, Slovak Republic.
authors.forename: Ivan
authors.initials: I
authors.lastname: Poliacek
authors.affiliation: Institute of Medical Biophysics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Malá Hora 4, 036 01 Martin, Slovak Republic.
authors.forename: Boris
authors.initials: B
authors.lastname: Dobrolubov
authors.affiliation: Institute of Medical Biophysics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Malá Hora 4, 036 01 Martin, Slovak Republic.
authors.forename: Marcel
authors.initials: M
authors.lastname: Veternik
authors.affiliation: Institute of Pathophysiology, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Sklabinska 26, 037 53 Martin, Slovak Republic.
authors.forename: Jana
authors.initials: J
authors.lastname: Plevkova
authors.affiliation: Institute of Medical Biophysics, Jessenius Faculty of Medicine in Martin, Comenius University in Bratislava, Malá Hora 4, 036 01 Martin, Slovak Republic.
authors.forename: Jan
authors.initials: J
authors.lastname: Jakus
mesh_terms: D000818:Animals; D002415:Cats; D003371:Cough / Q000503:physiopathology*; D004576:Electromyography; D012018:Reflex / Q000502:physiology*; D012912:Sneezing / Q000502:physiology*
keywords: Electromyogram; Mutual interactions; Sneeze; Styloglossus muscle; Tracheobronchial cough