A 3 year-old neutered male domestic shorthaired cat was rolled out of an OR after the chylothorax surgery (cysterna chyli ablation, pericardiectomy, and thoracic duct ligation) as well as the surgical correction of congenital peritoneopericardial diaphragmatic hernia (PPDH). An extensive pleural fibrosis was noted during surgery due to the suspected chronicity of the chylous effusion. A unilateral small-bore chest tube was placed into one of the hemithoraces at the conclusion of the surgical procedure. The intraoperative anesthesia monitoring was complicated by the inability to obtain indirect blood pressure measurements during the second half of the procedure despite the presence of otherwise stable monitoring parameters including end-tidal CO2. No significant blood loss was noted during the surgery.
