Arytenoid lateralisation: aspiration risk and aftercare
11-year-old Labrador operated on for bilateral laryngeal paralysis by unilateral arytenoid lateralisation. It breathes without stridor and is about to be discharged.
What information is correct for the owners?
chevron_right Show answer and explanation
A. The risk of aspiration pneumonia disappears after the first few weeks, once the larynx heals
The glottis remains permanently open, so the risk persists for life, although it is highest in the immediate post-operative period.
B. If stridor recurs, the other arytenoid is lateralised to improve the result
Bilateral lateralisation greatly increases aspiration risk and is not recommended. New stridor requires re-examination (suture failure, oedema, another cause).
C. There is a lifelong risk of aspiration pneumonia: use a harness, avoid swimming and strenuous exercise in the heat, and seek care for cough, fever or lethargy
Correct. Aspiration pneumonia is the most frequent and important complication, especially in dogs with polyneuropathy or oesophageal dysmotility. The bark will remain hoarse and the dog may cough when eating or drinking.
D. It should receive continuous prophylactic antibiotics to prevent pneumonia
Chronic antibiotic prophylaxis does not prevent aspiration and selects for resistance. Pneumonia is treated when it occurs, with culture if possible.
lightbulb Key takeaway
Unilateral lateralisation (arytenoid or cricoarytenoid) is the technique of choice and greatly improves quality of life. The price is a less protected airway: explain the aspiration risk and possible neurological progression (GOLPP) before surgery.
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Updated: October 31, 2026 · Educational content for veterinary professionals. It does not replace current clinical guidelines or the judgement of the attending veterinarian.