ISSN 2398-2969      

Gastrointestinal: pyloric stenosis

Clapis

Introduction

  • Congenital or acquired hypertrophy of circular muscle fibers or hyperplasia of pyloric mucosa (or both) of the pyloric ring of the stomach - a rare finding in rabbits.
  • Cause: congenital. Disease agents unknown; in other species may be associated with excess gastrin levels or abnormal neuromuscular control.
  • Signs: reduced growth rate, anorexia, listlessness, weight loss and death.
  • Diagnosis: no definitive test. In other species diagnosis based on clinical suspicion, plain and contrast radiographs and gastroscopy. In rabbits, all cases described diagnosed after post-mortem examination.
  • Treatment: in other species pyloroplasty or pyloromyotomy.
  • Prognosis: all cases in rabbits determined after death.
Print off the Owner factsheet on Pyloric stenosis to give to your clients.

Presenting signs

  • Anorexia Anorexia.
  • Weight loss Weight loss.
  • Hunched posture due to pain.
  • Listlessness.
  • Reduced growth rate.
  • Death.

Acute presentation

  • Sudden death.

Age predisposition

  • Mostly described in young rabbits (4-16 weeks old).

Pathogenesis

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Diagnosis

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Treatment

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Prognosis

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Further Reading

Publications

Refereed papers

  • Recent references from PubMed and VetMedResource.
  • Varga M (2015) Emergency management of gut stasis in rabbits. Comp Anim 20 (1), 20-25 VetMedResource.
  • Harcourt-Brown F M & Harcourt-Brown S F (2012) Clinical value of blood glucose measurement in pet rabbits. Vet Rec 170 (26), 674 PubMed.
  • Paul-Murphy J (2007) Critical care of the rabbit. Vet Clin North Am Exotic Anim Pract 10 (2), 437-461 PubMed.
  • Jenkins J R (1999) Feeding recommendations for the house rabbit. Vet Clin North Am Exotic Anim Pract 2 (1), 143-151 PubMed.
  • Cardy R H (1975) A case of spontaneous congenital pyloric stenosis in a rabbit. Lab Anim Sci 23 (4), 588-589 PubMed.
  • Weisbroth S H & Scher S (1975) Naturally occurring hypertrophic pyloric stenosis in the domestic rabbit. Lab Anim Sci 25 (3), 355-360 PubMed.

Other sources of information

  • Bourne D & Lewis W (2015) Pyloric stenosis in rabbits. Website: http://wildpro.twycrosszoo.org/S/00dis/Miscellaneous/Pyloric_stenosis_Rabbit.htm. Last accessed 9th January 2018.
  • Harcourt-Brown F (2014) Digestive System Disease. In: BSAVA Manual of Rabbit Medicine. Eds: Meredith A & Lord B. BSAVA, UK. pp 168-190.
  • Richards H, Whittington J K, Matheson J & Mitchell M (2014) Utilising Radiographic Imaging to Predict Outcome in Rabbits with Gastrointestinal Motility Disorders. In: Proc Association of Exotic Mammal Veterinarians Conference. Orlando, Florida, USA. pp 7.
  • Varga M (2014) Digestive Disorders. In: Textbook of Rabbit Medicine. 2nd edn. Elsevier Butterworth Heinemann, UK. pp 303-349.
  • Harcourt-Brown F (2013) Gastric Dilation and Intestinal Obstruction. In: BSAVA Manual of Rabbit Surgery, Dentistry and Imaging. Eds: Harcourt-Brown F & Chitty J. BSAVA, UK. pp 172-189.
  • Lennox A (2013) Radiographic Interpretation of the Abdomen. In: BSAVA Manual of Rabbit Surgery, Dentistry and Imaging. Eds: Harcourt-Brown F & Chitty J. BSAVA, UK. pp 84-93.

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