[The algimetry evaluation by thermic and pressoric nociceptive stimulus in dogs pre treated with methotrimeprazine, midazolam and ketamine with or without butorphanol or buprenorphine].
OBJECTIVE
This study aimed at quantifies the pain in dogs under dissociative anesthesia, across thermal and pressoric stimulus and quantify the reasonable period between two different opioids analgesics.


METHODS
In this study, 30 dogs were used and, divided into three groups of 10 animals each, in which the animals of GI received methotrimeprazine and midazolam put on the same syringe with ketamine. The animals of GII received the same treatment of GI but associated with butorphanol and finally the animals of GIII received the same treatment of GI but associated with buprenorphine. The routine parametric evaluations has been proceeded, although using the thermo algimetry measured in degrees C with the average of 52 degrees C and the pressoric algimetry in Kg.


RESULTS
In the thermo algimetry, there has been significant difference in GI at the moments M0, M1, M4 and M5; in GII it was found at M0, M1, M5 and M6 and in GIII it was observed the significant at M0 and M1. It has also been shown in pressoric algimetry significant difference in GI at the moments M0, M2 and M3. Among GII it has observed significant difference at all moments and it has found at M0, M9 in GIII. Thus, it has observed significant differences between all groups; for such the M2 of GII smaller than the others; and M4, M5 of GIII bigger than GI and GII. In the assessment of all periods it was observed significant latent period bigger in GI, however, with reasonable period and short recovery in GII and GIII. In the order hand, the postural tonus recovery it was longer in GIII, followed by GII and finally GI.


CONCLUSIONS
The used method for the measurement of algic stimulus was efficient, noticing a reasonable analgesic period of 3 hours for butorphanol and 6 hours for buprenorphine.
Rosa
André Leguthe
AL
Departamento de Cirurgia e Anestesiologia Veterinária da Universidade Estadual Paulista (UNESP), Botucatu, São Paulo. leguthe@terra.com.br
Massone
Flávio
F
D000700:Analgesics / Q000008:administration & dosage*; D000818:Animals; D002047:Buprenorphine / Q000008:administration & dosage*; D002077:Butorphanol / Q000008:administration & dosage*; D004285:Dogs; D004359:Drug Therapy, Combination; D005260:Female; D007649:Ketamine / Q000008:administration & dosage*; D008297:Male; D008728:Methotrimeprazine / Q000008:administration & dosage*; D008874:Midazolam / Q000008:administration & dosage*; D010147:Pain Measurement / Q000379:methods*; D011312:Pressure; D013696:Temperature
D000700:Analgesics; D002047:Buprenorphine; D007649:Ketamine; D008728:Methotrimeprazine; D002077:Butorphanol; D008874:Midazolam