Journal of the South African Veterinary Association
On-line version ISSN 2224-9435
KRUGER, K and STEGMANN, G F. Partial intravenous anaesthesia in 5 horses using ketamine, lidocaine, medetomidine and halothane. J. S. Afr. Vet. Assoc. [online]. 2009, vol.80, n.4, pp. 233-236. ISSN 2224-9435.
A partial intravenous protocol was used successfully to maintain anaesthesia in 5 healthy horses. Horses were premedicated with acepromazine, romifidine and butorphanol, induced with guaifenesin and ketamine and maintained on a constant rate infusion of lidocaine, ketamine and medetomidine together with halothane inhalation anaesthesia. Mean end-tidal halothane concentration to maintain a surgical plane of anaesthesia was 0.8 ± 0.2 %. Mean dobutamine requirement to maintain mean arterial pressure above 9.31 kPa was 0.42 ± 0.3 µg/kg/min The administration of relatively low doses of lidocaine, ketamine and medetomidine together with halothane resulted in haemodynamically stable anaesthesia, followed by smooth recovery.
Keywords : anaesthesia; halothane; horse; ketamine; lidocaine; medetomidine.