Examination of the Upper and Lower Respiratory Tract Relevant to Purchase

Variability of resting endoscopic grading for assessment of recurrent laryngeal neuropathy in horses

“…At yearling sales and some prepurchase examinations, endoscopic examinations are performed to confirm 'respiratory soundness' (Haynes 1992); indeed, evidence supports an association between yearlings' resting endoscopic grades and their subsequent racing 2: Percentage of endoscopic recordings in which there was perfect agreement within observers (intraobserver agreement) and between observers (interobserver agreement), for each individual grade. For intraobserver agreement, the number of recordings receiving each grade at first and second viewings of the same recordings combined are shown for observer 1 and observer 2.…”