Obstructive inflammatory laryngeal disease (OILD), which requires tracheostomy as emergency management, has been reported in cats but not in dogs. We experienced an OILD-like case in a dog which we treated with a permanent tracheostomy. A 9-year-old male miniature dachshund was presented with acute onset of dyspnea. The dog was dyspneic with cyanosis, and radiography revealed a mass lesion at the laryngeal area. Direct observation under laryngoscopy showed a marked enlargement of the arytenoid cartilages and a mass at the dorsal larynx. Because withdrawal of oxygen therapy resulted in dyspnea, a permanent tracheostomy was performed after biopsy of the laryngeal mass. Histopathologically, a diagnosis of pyogranulomatous inflammation was made. The dog’s respiratory status returned to normal immediately after surgery, and was normal without dyspnea at 23 months after surgery. Permanent tracheostomy with medical therapy is considered a treatment of choice in dogs with dyspnea from OILD.

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A 10-year-old intact male papillon with a difficult airway was referred for surgical repair of a perineal hernia. Endotracheal intubation was unsuccessfully attempted at the referring hospital. For surgery at our facility, we prepared a conventional endotracheal tube, a supraglottic airway device, and a tracheostomy. Conventional endotracheal intubation with a 3.5-mm endotracheal tube failed because of rigidity of the larynx. The supraglottic airway device, a size C3 V-gel^®, was placed successfully. A normal capnogram waveform was observed and general anesthesia was maintained without any complications throughout the surgery. The surgery was completed and the patient recovered from anesthesia uneventfully. A supraglottic airway device is useful in management of cases with difficult airway.

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An 11-year-old male castrated Scottish fold cat was presented for perineal urethrostomy after a history of dysuria. Pre-operative examinations, including thoracic radiography and echocardiography, revealed that the cat had an insidious dynamic left ventricular outflow tract obstruction (LVOTO). The cat underwent a perineal urethrostomy under general anesthesia. Invasive arterial blood pressure (IABP) was measured for cardiovascular monitoring during anesthesia. Dynamic blood pressure fluctuation and dicrotic notch disturbance with severe hypotension were suspected from an arterial pressure waveform during surgery. However, the hypotension improved after intravenous administration of ephedrine with careful observation of heart rate and IABP. Invasive arterial blood pressure was a useful monitoring method for general anesthesia in a cat with LVOTO.

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