Reversal of arterial oxygen desaturation with the use of an oxygen concentrator during injectable anaesthesia in feral cats positioned in the Trendelenburg, dorsal or lateral surgical position.

This study observed the effects of oxygen supplementation, via an oxygen concentrator, on peripheral arterial blood oxygenation (SpO2) measured by pulse oximetry in anaesthetised cats undergoing spay in three different surgical positions. A total of 192 female feral cats were investigated for a large-scale trap-neuter-release program. Cats were anaesthetised with an intramuscular combination of butorphanol (0,4 mg / kg), ketamine (7-10 mg / kg) and medetomidine (0,03-0,05 mg / kg).

How painful are cats after neutering - a field study using multimodal analgesia with intraperitoneal ropivacaine in a -neuter-return program in feral cats.

For a large-scale trap-neuter-return program 119 cats were anaesthetised with an intramuscular combination of 0,03-0,05 mg/kg medetomidine, 7-10 mg/kg ketamine and 0,4 mg/kg butorphanol. Cats received intraoperative 4 mg/kg tolfenamic acid subcutaneously and before closure of abdominal wall either 2 mg/kg ropivacaine (ROPI) intraperitoneal or saline (NaCl) in equal volumes. Pain was scored one, six and 20 hours postoperative with the modified Glasgow Composite Pain Scale (mGCPS) and the modified Colorado State University Scale (mCSU).

Cats undergoing spay with medetomidine, ketamine and butorphanol develop arterial oxygen desaturation independent of surgical positioning and increased intraocular pressure in Trendelenburg position.

This study observed the effects of three different surgical positions on arterial blood oxygenation measured noninvasively by pulse oximetry (SpO2) and on intraocular pressure (IOP) in anaesthetised cats undergoing spay. A total of 222 female feral cats were anaesthetised for a large-scale trap-neuter-return program with an intramuscular combination of medetomidine (0.03 - 0.