title: Breathing pattern and thoracoabdominal asynchrony in horses with chronic obstructive and inflammatory lung disease.
abstract: The aim of the study was to show that changes in thoracoabdominal asynchrony (TAA) between quiet breathing and CO2-induced hyperpnoea can be used to differentiate between horses with healthy airways and those suffering from inflammatory airway disease (IAD) or recurrent airway obstruction (RAO). The level of TAA was displayed by the Pearson's correlation coefficient (PCC) of thoracic and abdominal signals, generated by respiratory ultrasonic plethysmography (RUP) during quiet breathing and hyperpnoea. Changes in TAA were expressed as the quotient of the PCCs (PCCQ) during normal breathing and hyperpnoea. Horses with RAO and IAD showed significant higher median PCCQ than healthy horses. Median PCCQ of horses with RAO and IAD was not significantly different. Horses affected by a pulmonary disorder showed lower TAA compared to the control group. This study suggests that TAA provides a useful parameter to differentiate horses with RAO and IAD from healthy horses.
authors.affiliation: Department of Small Animals and Horses, Section of Equine Internal and Infection Medicine, Vetmeduni Vienna, Veterinärplatz 1, A-1210 Vienna, Austria. Eva.Haltmayer@vetmeduni.ac.at
authors.forename: E
authors.initials: E
authors.lastname: Haltmayer
authors.forename: S
authors.initials: S
authors.lastname: Reiser
authors.forename: J P
authors.initials: JP
authors.lastname: Schramel
authors.forename: R
authors.initials: R
authors.lastname: van den Hoven
mesh_terms: D000818:Animals; D002908:Chronic Disease; D005260:Female; D006734:Horse Diseases / Q000473:pathology*; D006736:Horses; D007249:Inflammation / Q000473:pathology / Q000662:veterinary*; D008173:Lung Diseases, Obstructive / Q000473:pathology / Q000662:veterinary*; D008297:Male; D012143:Respiratory Physiological Phenomena; D013686:Telemetry / Q000295:instrumentation / Q000379:methods / Q000662:veterinary
keywords: Horse; Hyperventilation; Inflammatory airway disease; Recurrent airway obstruction; Respiratory ultrasonic plethysmography