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BOAS Clinical Research Project

Non-invasive Assessment of Respiratory Function in Unrestrained Conscious Brachycephalic Dogs Pre and Post Upper Airway Surgery

Principal investigator: Jane Ladlow (Royal College and European Specialist in Small Animal Surgery)

Background: We are conducting a prospective study to objectively evaluate the respiratory function of brachycephalic dogs pre and post airway surgery. The aim of this study is to demonstrate the effectiveness of upper airway surgery in brachycephalic obstructive airway syndrome (BOAS) based on objective data using whole body barometric plethysmography (WBBP).

Participation Requirements:

brachycephalic dogs (dogs with short muzzles) that have evidence of respiratory signs (referral letter required)

Procedures involved in study:

  • Consultation and admission
  • Non-invasive respiratory function test (WBBP)
  • Computer tomography (CT) scan for the head and neck
  • Rhinoscopy
  • Upper airway corrective surgery
  • ICU monitoring overnight
  • Discharge
  • Follow-up appointment (4-6 weeks post-surgery), non-invasive respiratory function test
  • Turbinectomy and/or further corrective surgeries (if needed)


  • The study will pay for the non-invasive respiratory function test and a discount for CT scan.
  • This study will improve our understanding of your dog’s respiratory signs and provide the most appropriate surgical intervention.
  • Results from this study may influence treatment of other dogs with similar conditions.

For further details on our BOAS study, please contact: Jane Ladlow or Nai-Chieh Liu DVM MPhil (PhD candidate in Veterinary Medicine), email:

Visit the BOAS research pages. 

General contact details:

01223 337621

For all enquiries during office hours and for emergency referrals at any time


Address: Madingley Road, Cambridge, CB3 0ES

How to find us

Refer a case

Reception staff will try to contact the clinician immediately for you. In the case of an emergency we will do our utmost to get a response at the time and in all cases within the day.

Please use our referral form

Obesity Clinic Landscape

Looking for a few more willing volunteers with medium sized dogs (15-25kg) for a short food project at the QVSH. Do you live close to Cambridge and own a medium sized dog (any breed or cross weighing 15-25 kg)? If so we would like to invite you and your 4-legged friend to participate in one of our current experiments investigating food preferences in dogs. The test will take place at the Queen’s Veterinary Hospital in Cambridge (some days in Feb & Mar) and will take about 30 min per dog. If you are interested please send an email to Marie ( to receive more information.