BEZERRA, F. C. F.; http://lattes.cnpq.br/6871825448876435; BEZERRA, Fernanda Carolina Farias.
Resumo:
This work aimed to evaluate the possible alterations in the respiratory and cardiovascular
systems caused by the use of acepromazine and lidocaine associated and separated by
intramuscular path in the pre-medication of dogs induced to anesthesia with propofol. Were
used six dogs, females, with no defined breed, healthy, presented in all groups, called G1,
G2, G3 and G4. In G1 it was used the association acepromazine (0,2 mg/kg) and lidocaine
(5mg/kg) and then 20 minutes it was induced anesthesia with propofol. To G2 was used the
same procedure, excluding the acepromazine, in G3 the excluded was the lidocaine and in
G4 occurred the substitution of acepromazine and lidocaine for NaCl 0,9% solution (0,1
mL/kg). The register of the variables was realized before and after the application of
acepromazine, lidocaine or placebo (M0); twenty minutes then this application (M20); and
for each 10 minutes after M20 (M30, M40, M50). These follow variables were evaluated:
corporal temperature, cardiac frequency, respiratory frequency, electrocardiography,
induction dose, and able anesthetic period of the propofol, analgesia and the presence of
protective reflexes. The data obtained were submitted to ANOVA, followed by Tukey Test
(P<0,05). The variables for induction dose and able anesthetic period were evaluated by the
Student “t” Test (p<0,05). Only the corporal temperature presented significant alteration.
The dose inductor was major in G4 than in all the other groups. Besides, the propofol dose
was minor in G1 than in G2. It can be concluded that acepromazine associated to lidocaine,
decreased the induction dose of propofol and increased its able period, and this association
determines minimum effects in the physiologic and electrocardiographic variables.