Uso da anestesia epidural com lidocaína em gatas (Felix catus) anestesiadas com associação cetamina-midazolam ou tiletamina-zolazepam, e submetidas a ovariossalpingohisterectomia.

Abstract

This work aimed to determine the cardiac and respiratory effects and the body temperature in consequence of the anesthesia epidural use, being acepromazina as preanesthesic medication, and with the associations cetamina-midazolam and tiletaminazolazepam, in cats submitted to ovarossalpingohisterectomia. And to compare the effects caused by the both anesthesic way, verifying the duration and the quality of the anesthesia in each association. Aiming to obtain an anesthesia with more security and without an expansive price. Ten cats were used, being distributed into two groups, with different associations. In the group cetamina-midazolam it was used a dose of 7,5 mg/kg of cetamina e 0,5 mg/kg of midazolam; in the group tiletamina-zolazepam it was used the dose of 2,5 mg/kg of tiletamina and 2,5 mg/kg of zolazepam; in the two groups acepromazina was used as MAP in the dose of 0,5 mg/kg and the epidural lombossacra anesthesia was make with lidocaina as vasoconstrictor in the dose of 0,22ml/kg. The parameters were obtained before the acepromazina application, 15 minutes after it, and 15 minutes after each application of the dissociative anesthesia, till the end of the surgery. This work showed that the use of the epidural anesthesia with the anesthesic association studied, do not make significant alterations on the cardiac and respiratory frequencies, just was observed a little decrease of the body temperature. The cetamine dose used was not enough to realize the surgery procedure, being necessary more doses of the dissociative anesthesia. The doses used in the group tiletamina-zolazepam demonstrated efficacy. All the animals were sedados after the acepromazina application, being important its calm effect. In the two groups the anesthesic induction was quick, with a good muscle relax caused by the epidural anesthesia effect, in association with the benzodiazepinicos action. It can be concluded that is possible to realize ovariossalpingohisterectomia with epidural anesthesia, using the doses of the tiletamina-zolazepam association, needing the use of alternatives to maintain the body temperature. And the cetamine-midazolam association it is not recommended for this case.