Oesophageal Blockage in Dogs: Signs, Diagnosis & Treatment

Your dog’s oesophageal function is a vital but often overlooked part of their digestive health. When functioning normally, food passes quickly from the mouth to the stomach, usually in just five seconds. Terriers, among other breeds, may be more prone to oesophageal blockages due to their behaviours or anatomy.

However, a blockage can cause significant distress and danger if your dog swallows or inhales a foreign object or a large piece of food that gets stuck in the oesophagus. This can interfere with swallowing, drinking, and even breathing.

What is the Oesophagus and How Can It Become Blocked?

The oesophagus is a muscular tube connecting the throat to the stomach, carrying food after chewing and swallowing. It runs from the mouth, through the pharynx, bypasses the heart, and passes through the diaphragm into the stomach, typically allowing food to pass swiftly and comfortably.

While it's relatively rare for food or objects to lodge here due to its flexible muscular walls, blockages can occur if a dog swallows large, irregularly shaped pieces of food or foreign bodies like chewed toy pieces or sticks. The lower neck section of the oesophagus is a common site for such blockages, sometimes detectable by touch or visible swelling.

Recognising the Symptoms of Oesophageal Blockage in Dogs

Oesophageal blockages typically have noticeable symptoms. Early recognition is crucial to avoid worsening complications such as oesophageal damage or aspiration pneumonia. Key signs include:

• Regurgitation of food or water soon after ingestion
• Retching or gagging without vomiting
• Excessive slobbering or drooling due to difficulty swallowing
• Apparent discomfort or difficulty swallowing with repeated attempts
• Pawing at the mouth or neck area to indicate distress
• Odd neck or head positioning as your dog tries to clear the blockage
• Lack of interest in food or refusal to eat
• Occasionally, laboured breathing or coughing if the airway is affected

Delayed veterinary attention is common because owners may not immediately understand these signs or confuse them with minor throat irritation. However, the persistent presence of such symptoms warrants prompt veterinary evaluation.

How is Oesophageal Blockage Diagnosed?

Veterinarians use a combination of history, clinical signs, and diagnostic tools to confirm an oesophageal obstruction:

1. Physical Examination: The vet feels for neck swelling or the presence of a foreign body, assesses your dog’s posture and breathing, and examines for pain on palpation.
2. Radiographs (X-rays): Plain X-rays are an initial step. If the blockage isn’t clear, contrast agents such as barium may be used to outline the oesophagus and highlight obstructions or strictures.
3. Endoscopy: Considered the gold standard, the vet inserts a flexible camera into the oesophagus. This allows direct visual confirmation and often enables removal of the blockage during the procedure. General anaesthesia is needed for this.
4. Additional Imaging: In complex cases, CT scans or fluoroscopy can provide detailed views of the oesophagus and surrounding tissues.
5. Laboratory Tests: Blood tests assess the dog's overall health status and check for inflammation or infection related to the blockage.

Treatment Options for Oesophageal Blockage in Dogs

Once a blockage is confirmed, treatment must proceed quickly to prevent complications:

1. Endoscopic Removal: If the object is reachable, vets usually attempt to remove it with endoscopy under general anaesthesia. This approach is minimally invasive and preferred.
2. Manual Removal or Manipulation: Sometimes, the vet may try to gently push or pull the blockage into the stomach or out of the oesophagus if safe and feasible.
3. Surgical Removal: If endoscopy fails or the object is causing oesophageal damage, surgery to open the oesophagus and remove the blockage might be required.
4. Post-Treatment Care: Your dog will typically need antibiotics to prevent infection and a special, restricted diet to allow the oesophagus to heal from inflammation or irritation.

It is essential to seek veterinary help immediately if you suspect your dog has an oesophageal blockage, as delayed treatment can lead to aspiration pneumonia, oesophageal rupture, or long-term strictures that impact quality of life.

Preventing Oesophageal Blockages

Though not all blockages are preventable, you can reduce the risk by:

• Keeping small or sharp objects like sticks, bones, and damaged toys away from your dog.
• Supervising your dog when chewing on toys, especially if they tend to tear or swallow pieces.
• Ensuring your dog eats appropriately sized and well-moistened food to ease swallowing.

Responsible pet ownership and close attention to your dog’s chewing habits can significantly help prevent this distressing condition.

Summary

Oesophageal blockage in dogs is a serious condition marked by regurgitation, drooling, gagging, and difficulty swallowing. Early veterinary diagnosis, using physical exams, X-rays, and especially endoscopy, is critical for effective management. Prompt removal of the blockage through endoscopy or surgery ensures the best outcomes. Preventive care by avoiding dangerous chew items can help reduce the chance of these blockages occurring.