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Department of Veterinary Medicine

Cambridge Veterinary School


Nai-Chieh obtained her veterinary degree at National Taiwan University and working as a junior training vet at WellcareVet Specialist Hospital in Taipei. She then joined the BOAS team as an MPhil+PhD student working on developing a non-invasive screening test for BOAS using whole-body barometric plethymgraphy and evaluating outcomes of different surgical procedures for BOAS. She started her residency in small animal surgery from February 2018 and moved to her new position as a Clinical Research Fellow from September 2019. Nai-Chieh is particularly interested in respiratory physiology in dogs with upper airway obstruction and small animal head and neck surgery. 


  • Brachycephalic Obstructive Airway Syndrome (BOAS)
  • Head and Neck Surgery
  • Respiratory physiology in dogs  
  • Sleep disordered breathing in dogs
  • Medical statistics


Key publications: 

Hinchliffe TA, Liu N-C, Ladlow J. Sleep-disordered breathing in the Cavalier King Charles spaniel: A case series. Vet Surg. 2018 Dec 28. doi: 10.1111/vsu.13148.

Liu N-C, Genain MA, Kalmar L, Sargan DR, Ladlow JF. Objective effectiveness of and indications for laser-assisted turbinectomy in brachycephalic obstructive airway syndrome. Vet Surg. 2018 Oct 10. doi: 10.1111/vsu.13107.

Liu N-C, Troconis EL, McMillan M, Genain M-A, Kalmar L, Price D, Sargan DR, Ladlow. Endotracheal tube placement during computed tomography of brachycephalic dogs alters upper airway dimensional measurements. Veterinary Radiology & Ultrasound. 2018. doi:10.1111/vru.12590

Liu N-C, Troconis EL, Kalmar L, Price DJ, Wright HE, Adams VJ, Sargan DR, Ladlow JF. Conformational risk factors of brachycephalic obstructive airway syndrome (BOAS) in pugs, French bulldogs, and bulldogs. PLoS ONE 2017;12(8):e0181928.

Liu N-C (2017) Novel diagnostic test for brachycephalic obstructive airway syndrome(BOAS) using whole-body barometric plethysmography (WBBP). PhD Thesis. University of Cambridge. 

Liu N-C, Oechtering GU, Adams VJ, Kalmar L, Sargan DR, Ladlow JF (2017).Outcomes and prognostic factors of surgical treatments for brachycephalic obstructive airway syndrome in 3 breeds. Vet Surg. 2017 Feb;46(2):271-280. doi: 10.1111/vsu.12608.

Liu N-C, Adams VJ, Kalmar L, Ladlow JF, and Sargan DR (2016) Whole-Body Barometric Plethysmography Characterizes Upper Airway Obstruction in 3 Brachycephalic Breeds of Dogs. Journal of Veterinary Internal Medicine, 30: 853–865. doi: 10.1111/jvim.13933

Liu N-C, Sargan DR, Adams VJ, Ladlow JF (2015) Characterisation of Brachycephalic Obstructive Airway Syndrome in French Bulldogs Using Whole-Body Barometric Plethysmography. PLoS ONE 10(6): e0130741. doi:10.1371/journal.pone.0130741

Dr Nai-Chieh  Liu
Clinical Research Fellow

Contact Details

Available for consultancy