Efeitos do tramadol no modelo de dor induzida por obstrução intestinal em eqüinos
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2010-02-22
Autores
Lopes, Maristela de Cassia Seudo [UNESP]
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Universidade Estadual Paulista (Unesp)
Resumo
Avaliaram-se os efeitos clínico e comportamental da injeção intravenosa do tramadol no controle da dor induzida experimentalmente, por obstrução intestinal extraluminal, com dreno de Pen Rose. Foram utilizados 24 cavalos distribuídos em quatro grupos: controle (GC, n=6); obstrução duodenal (GD, n=6); obstrução de íleo (GI, n=6) e obstrução de flexura pélvica (GFP, n=6). Após medicação pré-anestésica com a associação de acepromazina (0,025 mg.kg-1 IV), xilazina (0,5 mg.kg-1 IV) e meperidina (4 mg.kg-1 IM), o tramadol foi administrado nas doses de 1,0 mg.kg-1 e 1,5 mg.kg-1, por via intravenosa (IV), imediatamente após a obstrução intestinal, em três cavalos de cada grupo. Avaliaram-se as freqüências cardíaca (FC) e respiratória (f), temperatura retal (TºC), tempo de preenchimento capilar (TPC), motilidade intestinal, comportamento relacionado à dor (olhar para o flanco, cavar, deitar e rolar) hemograma e hemogasometria venosa, nos intervalos: M0 (basal) a cada 0,5 hora de M1 a M6 , na fase de obstrução, e até três horas após a reversão do processo obstrutivo (M7 a M12). Os resultados demonstraram que não houve diferença significativa entres as doses utilizadas dentro de cada grupo, assim como entre os grupos. Houve aumento da FC em M11 no GD e em M12 no GFP. Os sinais de dor abdominal e atonia intestinal iniciaram-se em M5 no GFP e em M6 no GI. Nos animais do GD, os sinais de desconforto não progrediram. No leucograma foi observado um quadro característico de estresse e na hemogasometria os animais do GD tendenciaram à alcalose metabólica com compensação respiratória. Clinicamente, observou-se que a dose de 1,5 mg.kg-1 de tramadol proporcionou melhor conforto para os animais, porem sem significado estatístico, quando comparado coma dose de 1,0 mg.kg-1...
The clinical and behavioral effects of the intravenous injection of tramadol were evaluated during the control of pain induced experimentally due to intestinal extraluminal obstruction using “Pen Rose” drain. A total of 24 horses were used and distributed in four groups: control (GC, n=6); duodenal obstruction (GD, n=6); ileum obstruction (GI, n=6) and pelvic flexure obstruction (GFP, n=6). After administration of pre-anesthetic medications using association of acepromazine (0.025 mg.kg-1 IV), xylazine (0.5 mg.kg-1 IV) and meperidine (4 mg.kg-1 IM), tramadol was administered at doses of 1.0 mg.kg-1 and 1.5 mg.kg-1 intravenously (IV), immediately after the intestinal obstruction in three horses of each group. Evaluations were performed, including heart rate (HR), respiratory rate (RR), rectal temperature (RT), capillary refill time (CRT), gut motility, pain-related behaviour (look for the sidewall, dig down and roll) and blood gases from venous blood at the time: M0 (baseline) and every 0.5 hours from M1 to M6, during obstruction process and also until three hours after the obstructive process be reverted (M7 to M12). The results showed no significant difference among the doses used in the same group as among groups. There was an increase in HR in the GD M11 and M12 of GFP. Signs of abdominal pain and intestinal atony began at M5 in GFP and at M6 in GI. In animals from GD, the discomfort signs did not showed progress. On the leucogram was observed a typical stress and on the blood gas analysis the animals from GD showed a tendency to metabolic alkalosis with respiratory compensation. Clinically, was observed that the dose of 1.5 mg.kg-1 of tramadol provided better comfort to the animals, but there was not statistical significance, compared with the dose 1.0 mg.kg-1... (Complete abstract click electronic access below)
The clinical and behavioral effects of the intravenous injection of tramadol were evaluated during the control of pain induced experimentally due to intestinal extraluminal obstruction using “Pen Rose” drain. A total of 24 horses were used and distributed in four groups: control (GC, n=6); duodenal obstruction (GD, n=6); ileum obstruction (GI, n=6) and pelvic flexure obstruction (GFP, n=6). After administration of pre-anesthetic medications using association of acepromazine (0.025 mg.kg-1 IV), xylazine (0.5 mg.kg-1 IV) and meperidine (4 mg.kg-1 IM), tramadol was administered at doses of 1.0 mg.kg-1 and 1.5 mg.kg-1 intravenously (IV), immediately after the intestinal obstruction in three horses of each group. Evaluations were performed, including heart rate (HR), respiratory rate (RR), rectal temperature (RT), capillary refill time (CRT), gut motility, pain-related behaviour (look for the sidewall, dig down and roll) and blood gases from venous blood at the time: M0 (baseline) and every 0.5 hours from M1 to M6, during obstruction process and also until three hours after the obstructive process be reverted (M7 to M12). The results showed no significant difference among the doses used in the same group as among groups. There was an increase in HR in the GD M11 and M12 of GFP. Signs of abdominal pain and intestinal atony began at M5 in GFP and at M6 in GI. In animals from GD, the discomfort signs did not showed progress. On the leucogram was observed a typical stress and on the blood gas analysis the animals from GD showed a tendency to metabolic alkalosis with respiratory compensation. Clinically, was observed that the dose of 1.5 mg.kg-1 of tramadol provided better comfort to the animals, but there was not statistical significance, compared with the dose 1.0 mg.kg-1... (Complete abstract click electronic access below)
Descrição
Palavras-chave
Equino, Intestinos - Obstruções, Dor visceral, Tramadol, Visceral pain, Intestinal obstruction, Tramadol, Progesterone, Equines
Como citar
LOPES, Maristela de Cassia Seudo. Efeitos do tramadol no modelo de dor induzida por obstrução intestinal em eqüinos. 2010. xxix, 73 f. Dissertação (mestrado) - Universidade Estadual Paulista, Faculdade de Ciências Agrárias e Veterinárias, 2010.