Aspiration pneumonia in dogs after dentals or surgery

Aspiration pneumonia in dogs after surgery is a serious, potentially life-threatening condition caused by inhaling food, vomit, or saliva into the lungs while under anesthesia or recovering, leading to inflammation and infection. Symptoms include coughing, difficulty breathing, nasal discharge, and fever, which can appear within days or up to a week post-surgery. Prompt veterinary care with antibiotics, oxygen, and supportive care is critical for recovery.

Key Risk Factors & Causes

  • Anaesthesia: Vomiting or regurgitation during or after surgery is a primary cause.

  • High-Risk Procedures: Upper airway surgery, laparotomy, neurosurgery, and thoracotomy are associated with higher risk.

  • Laryngeal Paralysis: Surgery for this condition is a major risk factor, with studies showing an 18.6% to 31.8% incidence of pneumonia in some cases.

  • Medication: Postoperative opioid analgesic use can lead to reduced gag reflexes, increasing risk.

  • Pre-existing Conditions: Megaesophagus or a history of respiratory/neurologic disease makes pneumonia more likely.

Symptoms of Post-Surgery Pneumonia

  • Respiratory Distress: Coughing, increased respiratory rate, panting, noisy/wet breathing, and open-mouth breathing.

  • Systemic Illness: Fever, lethargy, loss of appetite, and blue-coloured gums (cyanosis).

  • Behavioural Changes: Reluctance to move or abnormal stretching of the neck to breathe.

Diagnosis and Treatment

  • Diagnosis: Vets often use chest X-rays, blood tests (CBC), and blood gas analysis.

  • Treatment: Involves hospitalization, oxygen support, broad-spectrum antibiotics, and IV fluids.

  • Supportive Care: Nebulizer treatments and "coupage" (chest percussion) can help mobilize fluid in the lungs.

Prevention Tips

  • Follow Fasting Guidelines: Strictly follow your veterinarian's pre-aesthetic fasting instructions.

  • Monitor Post-Op: Keep the dog quiet, restricted in activity, and monitor for coughing or breathing difficulties for several days after discharge.

  • Upright Feeding: For dogs with known reflux issues, feed them from an elevated position.

Disclaimer:‍ ‍ If your dog exhibits signs of pneumonia after surgery, seek immediate veterinary attention.