Research in veterinary science · 1984
Arterial blood gas tensions during exercise in a horse with laryngeal hemiplegia, before and after corrective surgery.
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Bayly W M, Grant B D, Modransky P D
Аннотация
Arterial blood samples were collected during maximal exercise over 1.6 km in a thoroughbred horse with left laryngeal hemiplegia. Acid-base and blood gas measurements were performed on each sample and compared to the results from samples which were similarly collected 48 hours after laryngoplasty surgery was performed. Before surgery, the PaO2 was 53.2 mm Hg and the PaCO2 was 58.1 mm Hg after 1.6 km. After surgery, the corresponding results were 83.6 mm Hg (PaO2) and 39.0 mm Hg (PaCO2). There was no significant difference in the times taken for each gallop. The exercise intolerance associated with laryngeal paralysis may be caused by an increase in the oxygen cost of breathing.