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Incidence of swallowing during exercise in horses with dorsal displacement of the soft palate.
Equine Vet J. 2010 Nov; 42(8):732-7.EV

Abstract

REASONS FOR PERFORMING STUDY

The relationship between dorsal displacement of the soft palate (DDSP) and swallowing is unclear.

OBJECTIVE

To quantify the relationship between DDSP and swallowing in horses at exercise.

HYPOTHESES

The frequency of swallowing increases immediately prior to DDSP in horses at exercise.

METHODS

Videoendoscopic and upper airway pressure data were collated from horses with a definitive diagnosis of DDSP at exercise. Horses with no upper airway abnormalities were matched by age, breed and sex and used as controls. Sixty-nine horses were identified with a definitive diagnosis of DDSP during the study interval. Airway pressure data were available for 42 horses.

RESULTS

The majority of horses displaced at high exercising speeds while accelerating; a smaller number displaced during deceleration after peak speed had been reached. Horses swallowed significantly more frequently in the 1 min immediately preceding DDSP than in the control horses at equivalent speeds. DDSP at exercise results in a significant increase in tracheal expiratory pressure, a significant decrease in pharyngeal expiratory pressure and a significantly less negative pharyngeal inspiratory pressure compared to matched controls and compared to the pressures during the 1 min interval prior to DDSP. There was no significant difference between any measure of airway pressure before or after a swallow when examined at each time interval in the DDSP population.

CONCLUSIONS

The frequency of swallowing decreases with increasing speed in normal horses. In contrast, the frequency of swallowing increases immediately prior to onset of DDSP. This is not a result of pharyngeal and tracheal pressure changes.

POTENTIAL RELEVANCE

The increased frequency of swallowing observed prior to DDSP may be related to the aetiology of the disease.

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Authors+Show Affiliations

Pigott JH
Department of Clinical Sciences, Cornell University, NY, USA.
Ducharme NG
No affiliation info available
Mitchell LM
No affiliation info available
Soderholm LV
No affiliation info available
Cheetham J
No affiliation info available

MeSH

Airway ObstructionAirway ResistanceAnimalsDeglutitionEndoscopyFemaleHorse DiseasesHorsesMalePalate, SoftPhysical ExertionVideotape Recording

Pub Type(s)

Journal Article

Language

eng

PubMed ID

21039804

Citation

Pigott, J H., et al. "Incidence of Swallowing During Exercise in Horses With Dorsal Displacement of the Soft Palate." Equine Veterinary Journal, vol. 42, no. 8, 2010, pp. 732-7.
Pigott JH, Ducharme NG, Mitchell LM, et al. Incidence of swallowing during exercise in horses with dorsal displacement of the soft palate. Equine Vet J. 2010;42(8):732-7.
Pigott, J. H., Ducharme, N. G., Mitchell, L. M., Soderholm, L. V., & Cheetham, J. (2010). Incidence of swallowing during exercise in horses with dorsal displacement of the soft palate. Equine Veterinary Journal, 42(8), 732-7. https://doi.org/10.1111/j.2042-3306.2010.00116.x
Pigott JH, et al. Incidence of Swallowing During Exercise in Horses With Dorsal Displacement of the Soft Palate. Equine Vet J. 2010;42(8):732-7. PubMed PMID: 21039804.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Incidence of swallowing during exercise in horses with dorsal displacement of the soft palate. AU - Pigott,J H, AU - Ducharme,N G, AU - Mitchell,L M, AU - Soderholm,L V, AU - Cheetham,J, PY - 2010/11/3/entrez PY - 2010/11/3/pubmed PY - 2010/12/16/medline SP - 732 EP - 7 JF - Equine veterinary journal JO - Equine Vet J VL - 42 IS - 8 N2 - REASONS FOR PERFORMING STUDY: The relationship between dorsal displacement of the soft palate (DDSP) and swallowing is unclear. OBJECTIVE: To quantify the relationship between DDSP and swallowing in horses at exercise. HYPOTHESES: The frequency of swallowing increases immediately prior to DDSP in horses at exercise. METHODS: Videoendoscopic and upper airway pressure data were collated from horses with a definitive diagnosis of DDSP at exercise. Horses with no upper airway abnormalities were matched by age, breed and sex and used as controls. Sixty-nine horses were identified with a definitive diagnosis of DDSP during the study interval. Airway pressure data were available for 42 horses. RESULTS: The majority of horses displaced at high exercising speeds while accelerating; a smaller number displaced during deceleration after peak speed had been reached. Horses swallowed significantly more frequently in the 1 min immediately preceding DDSP than in the control horses at equivalent speeds. DDSP at exercise results in a significant increase in tracheal expiratory pressure, a significant decrease in pharyngeal expiratory pressure and a significantly less negative pharyngeal inspiratory pressure compared to matched controls and compared to the pressures during the 1 min interval prior to DDSP. There was no significant difference between any measure of airway pressure before or after a swallow when examined at each time interval in the DDSP population. CONCLUSIONS: The frequency of swallowing decreases with increasing speed in normal horses. In contrast, the frequency of swallowing increases immediately prior to onset of DDSP. This is not a result of pharyngeal and tracheal pressure changes. POTENTIAL RELEVANCE: The increased frequency of swallowing observed prior to DDSP may be related to the aetiology of the disease. SN - 0425-1644 UR - https://www.unboundmedicine.com/medline/citation/21039804/Incidence_of_swallowing_during_exercise_in_horses_with_dorsal_displacement_of_the_soft_palate_ L2 - https://doi.org/10.1111/j.2042-3306.2010.00116.x DB - PRIME DP - Unbound Medicine ER -