Sedation of hyperthyroid cats with subcutaneous administration of a combination of alfaxalone and butorphanol
Article first published online: 22 MAR 2013
© 2013 The Authors. Australian Veterinary Journal © 2013 Australian Veterinary Association
Australian Veterinary Journal
Volume 91, Issue 4, pages 131–136, April 2013
How to Cite
Ramoo, S., Bradbury, L., Anderson, G. and Abraham, L. (2013), Sedation of hyperthyroid cats with subcutaneous administration of a combination of alfaxalone and butorphanol. Australian Veterinary Journal, 91: 131–136. doi: 10.1111/avj.12034
- Issue published online: 22 MAR 2013
- Article first published online: 22 MAR 2013
- Manuscript Accepted: 24 SEP 2012
Vol. 91, Issue 6, 240, Article first published online: 29 MAY 2013
To evaluate the sedative, respiratory and cardiovascular effects of subcutaneously administered alfaxalone and butorphanol in a group of hyperthyroid cats.
A prospective, single-centre observational study.
Client-owned hyperthyroid cats (n = 20) were examined and sedated with alfaxalone (3 mg/kg) and butorphanol (0.2 mg/kg) administered subcutaneously. Sedation scores, heart rate, respiratory rate and blood pressure were measured at 15-min intervals during the 45-min observation period and compared with pre-sedation values. At the end of 45 min, cats were assessed to be adequately sedated for oral administration of iodine-131 if there was minimal resistance and an intact gag reflex.
The maximum median sedation score was reached 45 min after injection. The lowest mean heart and respiratory rates and blood pressure values occurred 30 min after injection. Significant decreases were noted in respiratory rates at all three time points (P < 0.001). Systolic, diastolic and mean blood pressure measurements were also significantly decreased at 15 and 30 min after injection (P < 0.05).
Subcutaneously administered alfaxalone and butorphanol can be used for sedation in cats undergoing procedures of short duration. Blood pressure should be monitored because of transient decreases observed in some cats. Further studies are required to determine whether the sedative, respiratory and cardiovascular effects are similar in euthyroid cats.