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Dynamic respiratory videoendoscopy in ridden sport horses: effect of head flexion, riding and airway inflammation in 129 cases.
Equine Vet J Suppl. 2011 NovEV

Abstract

REASONS FOR PERFORMING STUDY

Dynamic upper airway obstruction (UAO) is a cause of respiratory noise and sometimes poor performance in sport horses. Riding, head flexion and airway inflammation may impact upper respiratory tract stability during exercise.

OBJECTIVES

To evaluate upper airway mechanical behaviour in ridden sport horses using overground endoscopy and the effect of head flexion, rider intervention and underlying airway inflammation on the pharynx and larynx.

METHODS

Resting and exercising videoendoscopic recordings during ridden exercise were obtained in 129 sport horses referred mainly for respiratory noise, poor performance or routine evaluation. The rider modified poll flexion and way of riding during the test and associated changes in UAO were recorded. Presence of upper and lower airway inflammation was also assessed.

RESULTS

Dynamic UAO was diagnosed in 91% (64/70) of the horses referred for respiratory noise and in 71% (29/41) of horses referred for poor performance. Pharyngeal instability was the most frequently diagnosed problem. However, differences were observed between dressage horses and showjumpers. Rider interaction and head flexion exacerbated upper airway instability and promoted the occurrence of complex UAO. Both lower airway inflammation and pharyngeal lymphoid hyperplasia were associated with pharyngeal instability, but not with any other UAO.

CONCLUSIONS

Rider intervention during ridden exercise (i.e. the various movements a horse might be asked to perform) influences upper airway morphology and function and, in cases of upper airway dynamic obstruction, can contribute to increasing laryngeal and/or pharyngeal instability in sport horses.

POTENTIAL RELEVANCE

As these are changes that would not usually be seen with treadmill videoendoscopy, ridden videoendoscopy should be the preferred method for evaluation of the upper airway in sport horses.

Authors+Show Affiliations

Equine Sports Medicine Practice, Brussels, Belgium. Emmanuelle.vanerck@skynet.be

Pub Type(s)

Journal Article

Language

eng

PubMed ID

22082441

Citation

Van Erck, E. "Dynamic Respiratory Videoendoscopy in Ridden Sport Horses: Effect of Head Flexion, Riding and Airway Inflammation in 129 Cases." Equine Veterinary Journal. Supplement, 2011, pp. 18-24.
Van Erck E. Dynamic respiratory videoendoscopy in ridden sport horses: effect of head flexion, riding and airway inflammation in 129 cases. Equine Vet J Suppl. 2011.
Van Erck, E. (2011). Dynamic respiratory videoendoscopy in ridden sport horses: effect of head flexion, riding and airway inflammation in 129 cases. Equine Veterinary Journal. Supplement, (40), 18-24. https://doi.org/10.1111/j.2042-3306.2011.00492.x
Van Erck E. Dynamic Respiratory Videoendoscopy in Ridden Sport Horses: Effect of Head Flexion, Riding and Airway Inflammation in 129 Cases. Equine Vet J Suppl. 2011;(40)18-24. PubMed PMID: 22082441.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dynamic respiratory videoendoscopy in ridden sport horses: effect of head flexion, riding and airway inflammation in 129 cases. A1 - Van Erck,E, PY - 2011/11/16/entrez PY - 2011/12/7/pubmed PY - 2012/3/20/medline SP - 18 EP - 24 JF - Equine veterinary journal. Supplement JO - Equine Vet J Suppl IS - 40 N2 - REASONS FOR PERFORMING STUDY: Dynamic upper airway obstruction (UAO) is a cause of respiratory noise and sometimes poor performance in sport horses. Riding, head flexion and airway inflammation may impact upper respiratory tract stability during exercise. OBJECTIVES: To evaluate upper airway mechanical behaviour in ridden sport horses using overground endoscopy and the effect of head flexion, rider intervention and underlying airway inflammation on the pharynx and larynx. METHODS: Resting and exercising videoendoscopic recordings during ridden exercise were obtained in 129 sport horses referred mainly for respiratory noise, poor performance or routine evaluation. The rider modified poll flexion and way of riding during the test and associated changes in UAO were recorded. Presence of upper and lower airway inflammation was also assessed. RESULTS: Dynamic UAO was diagnosed in 91% (64/70) of the horses referred for respiratory noise and in 71% (29/41) of horses referred for poor performance. Pharyngeal instability was the most frequently diagnosed problem. However, differences were observed between dressage horses and showjumpers. Rider interaction and head flexion exacerbated upper airway instability and promoted the occurrence of complex UAO. Both lower airway inflammation and pharyngeal lymphoid hyperplasia were associated with pharyngeal instability, but not with any other UAO. CONCLUSIONS: Rider intervention during ridden exercise (i.e. the various movements a horse might be asked to perform) influences upper airway morphology and function and, in cases of upper airway dynamic obstruction, can contribute to increasing laryngeal and/or pharyngeal instability in sport horses. POTENTIAL RELEVANCE: As these are changes that would not usually be seen with treadmill videoendoscopy, ridden videoendoscopy should be the preferred method for evaluation of the upper airway in sport horses. UR - https://www.unboundmedicine.com/medline/citation/22082441/Dynamic_respiratory_videoendoscopy_in_ridden_sport_horses:_effect_of_head_flexion_riding_and_airway_inflammation_in_129_cases_ L2 - https://doi.org/10.1111/j.2042-3306.2011.00492.x DB - PRIME DP - Unbound Medicine ER -