Paranasal sinus cyst as a cause of stridor in a standardbred colt.

Sinus cysts are epithelium-lined, fluid-filled cavities that can occur in the paranasal sinuses of horses. Extensive damage to the permanent tooth buds was a significant feature in this case. The sequellae of these abnormalities, although not apparent at the time of presentation, remain an important consideration for prognosis.

Gravel impaction in a 2-year-old Morgan gelding.

An unusual case of impaction colic caused by the ingestion of large quantities of gravel. The clinical presentation, surgical findings, and outcome are described.

Fatal air embolism during anesthesia for laparoscopy in a dog.

A 13-year-old dog went into cardiopulmonary arrest after insufflation of the abdominal cavity with nitrogen for laparoscopy. Resuscitation was unsuccessful. Necropsy findings included a punctured spleen and confirmed the development of air embolism.

Percutaneous transtracheal ventilation and morphometric measurements of cervical structures in swine.

Fifteen swine cadavers were examined to determine a quick, reliable means of locating the level of the cricothyroid ligament from consistently palpable structures in the head and neck area. From calculations of measurements made on these cadavers, it was discovered that when a 21-43 kg pig was placed in a standard position, the measured length (L) from the angle of the mandible to the manubrium sterni multiplied by a factor of 0.48 equals the parameter Z [L (0.