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Endoscopy for cats and dogs

🔎 Principle of endoscopy

Endoscopy is a non-invasive examination method which consists of visually exploring a region of the body, not accessible to the naked eye, using a flexible optical fibre coupled to a camera. The areas accessible by endoscopy are:

  • The digestive tract (esophagoscopy, gastroduodenoscopy, colonoscopy)
  • The nasal cavities (rhinoscopy)
  • The respiratory tract (bronchoscopy)
  • The lower urinary tract (urethrocystoscopy)
  • and the genital tract (vaginoscopy)

In addition to visual exploration, this examination allows for the taking of numerous samples (bronchoalveolar lavages, biopsies, cytobrushes, etc.) and for certain procedures to be performed (extraction of foreign bodies, bloating of stenoses (nasopharyngeal, esophageal, colorectal, etc.), antifungal bathing in the case of nasal and/or sinus aspergillosis, etc.).

❔ What are the indications for an endoscopy?

  • Gastroscopy: chronic vomiting and/or regurgitation, gastric foreign body, mass biopsies or other ultrasound lesion…
  • Colonoscopy: chronic diarrhoea (+/- gastroduodenoscopy), blood in the stool, tenesmus, constipation, rectal mass…
  • Respiratory endoscopy: chronic cough, breathing difficulties, recurrent or antibiotic-resistant pneumonia…
  • Rhinoscopy: sneezing, hooting, discharge, “reverse sneezing”, epistaxis, nasal obstruction…
  • Urethro-cystoscopy (dog over 15 kg or dog over 25 kg): difficulty urinating, blood in the urine, bladder or urethral mass…

🐾 How to prepare the animal before the examination?

For all examinations, general anaesthesia is required, the animal must be presented fasting since the day before.

For colonoscopy, a 48-hour fast is necessary, with prior administration of a hyperdigestible food for one week and laxatives (colopeg, duphalac) for 48 hours.

For respiratory endoscopies, with the possibility of parasitic bronchopneumopathy (angiostrongylosis, aerulostrongylosis), a stool sample from the last 3 days is recommended.

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