Arterial blood gas values in horses with laryngeal paralysis.
Abstract: LARYNGEAL paralysis is a common, usually subclinical
disease in horses (Cole 1946; Gunn 1972). More severely
affected animals, clinically termed roarers, are frequently
alleged to have reduced exercise tolerance (Argyle 1933; Cook
1965). This could most readily be attributed to exercise related
hypoxaemia caused by a reduced airflow and/or airflow
turbulence at the reduced rima glottidis. It could also be
conjectured that a rider would demand less of a horse making
loud and possibly distressing respiratory noises. Although
there has been much recent research into the pathology of
equine laryngeal paralysis there has been a paucity of physiological studies. Sasse (1971) examined arterial blood gas levels
in 8 horses suffering from unilateral laryngeal paralysis and
found no blood gas abnormalities at rest or after 30 mins
lunging exercise in these animals. However, he observed a
resting norrnocapnic hypoxaemia in one case of bilateral
laryngeal paralysis, but did not record its blood gas values
after exercise. Sasse concluded that respiratory inefficiency
was not an athletic performance limiting factor in laryngeal
paralysis.
This report describes resting and post exercise arterial
oxygen partial pressure (PwJ and arterial carbon dioxide
partial pressure (Pa& values in normal horses and horses
suffering from clinical laryngeal paralysis.
Publication Date: 1982-07-01 PubMed ID: 6809457DOI: 10.1111/j.2042-3306.1982.tb02407.xGoogle Scholar: Lookup
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- Comparative Study
- Journal Article
Summary
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The research article explores the differences in arterial blood gas levels, particularly oxygen and carbon dioxide, in horses with laryngeal paralysis, both at rest and after exercise. It aims to determine whether respiratory inefficiency due to this condition affects the athletic performance of horses.
Research Context
- Laryngeal paralysis is a common but often unnoticed condition in horses, more profoundly affecting those referred to as roarers. A symptom of this disease is decreased exercise tolerance, speculated to be due to reduced airflow and disturbances at the rima glottidis or the loud and distressful noises made by the animal causing riders to reduce demands on the horse.
- While much research has been done on the pathology of this condition, few physiological studies have been conducted. Prior research conducted by Sasse (1971) on horses suffering from unilateral laryngeal paralysis did not find abnormalities in blood gas levels at rest or after exercise. A case of bilateral laryngeal paralysis did show resting normocapnic hypoxaemia. Sasse, however, did not record blood gas values after exercise and concluded that respiratory inefficiency was not a limiting factor in the athletic performance of horses with laryngeal paralysis.
Research Objective and Method
- The study intends to build on the existing research by examining the arterial oxygen partial pressure and arterial carbon dioxide partial pressure values in both normal and clinically affected horses. These measurements will be taken at rest and after exercise.
- The purpose of this research is to get a more detailed understanding of the physiological effects of laryngeal paralysis on horses and determine whether it truly affects their athletic performance.
Significance of the Research
- Should the study reveal significant differences in blood gas levels among horses with laryngeal paralysis, it could indicate that the condition may in fact limit the athletic capabilities of the affected animals.
- The study could lead to improved diagnosis and treatment methods, potentially enabling these horses to maintain or regain their athletic potential.
Cite This Article
APA
Dixon PM.
(1982).
Arterial blood gas values in horses with laryngeal paralysis.
Equine Vet J, 14(3), 246-248.
https://doi.org/10.1111/j.2042-3306.1982.tb02407.x Publication
Researcher Affiliations
MeSH Terms
- Animals
- Carbon Dioxide / blood
- Female
- Horse Diseases / blood
- Horses
- Male
- Oxygen / blood
- Vocal Cord Paralysis / blood
- Vocal Cord Paralysis / veterinary
Citations
This article has been cited 1 times.- Rhee HS, Steel CM, Derksen FJ, Robinson NE, Hoh JF. Immunohistochemical analysis of laryngeal muscles in normal horses and horses with subclinical recurrent laryngeal neuropathy. J Histochem Cytochem 2009 Aug;57(8):787-800.
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