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Prognostic indicators of short-term outcome in dogs undergoing surgery for brachycephalic obstructive airway syndrome
  1. Maheeka Seneviratne1,
  2. Benjamin Marcus Kaye1 and
  3. Gert Ter Haar2
  1. 1 Queen Mother Hospital for Animals, Royal Veterinary College Clinical Services Division, Hatfield, UK
  2. 2 Specialistische Dierenkliniek Utrecht, Utrecht, The Netherlands
  1. Correspondence to Dr Maheeka Seneviratne, Queen Mother Hospital for Animals, Royal Veterinary College Clinical Services Division, Hatfield AL97TA, UK; mseneviratne5{at}


Background The aims of this study were to assess the impact of epidemiological variables, severity of presurgical respiratory signs, diagnostic findings from pharyngeal and laryngeal examination using a new grading scheme and CT scan images, on postsurgical outcome in dogs undergoing surgery for brachycephalic obstruction airway syndrome (BOAS).

Methods An owner-based questionnaire was used to grade dogs based on their respiratory signs before surgery and at least six weeks after surgery. Epidemiological data and results from presurgical pharyngeal and laryngeal examination and CT scan findings for 75 dogs undergoing airway surgery were collected from the medical records.

Results 70.7 per cent of dogs showed an improvement in respiratory signs following rhinoplasty and palatoplasty. This improvement was associated with the severity of inspiratory efforts and the Poncet score on presentation, but not with any other clinical sign or anatomical abnormality found during BOAS assessment, nor by the degree of craniofacial shortening as determined by CT-scan. Presurgical snoring was positively associated with the degree of narrowing of pharyngeal dimensions.

Conclusions Dogs presenting with clinical signs of BOAS benefit from rhinoplasty and palatoplasty alone. The degree of narrowing of pharyngeal dimensions appears to be associated with severity of snoring while soft palate length alone was not.

  • soft tissue surgery
  • ear, nose and throat (ENT)
  • dogs
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  • Funding The authors have not declared a specific grant for this research from any funding agency in the public, commercial or not-for-profit sectors.

  • Competing interests None declared.

  • Patient consent for publication Not required.

  • Provenance and peer review Not commissioned; externally peer reviewed.

  • Data availability statement Data are available on reasonable request. All data relevant to the study are included in the article or uploaded as supplementary information. Not applicable.

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