Abstract
We applied intermittent positive pressure ventilation (IPPV) under isoflurane-oxygen anesthesia to a 5 year-old thoroughbred horse for implantation of a left atrial transducer. The horse was pre-anesthetized with an intravenous injection of xylazine (0.5 mg/kg) and midazolam (0.01 mg/kg), followed by ketamine (2.5 mg/kg) for anesthetic induction. During surgery, dobutamine was infused at a variable rate of 0.25-3.3μg/kg/min to maintain mean arterial blood pressure at approximately 80 mmHg. The horse was anesthetized over 5 hours, however, recovered uneventfully and with normal postsurgical clinical signs.
