Estudo comparativo entre o tramadol por via oral e intramuscular no tratamento da dor pós-operatória de cadelas submetidas a ovariosalpingohisterectomia

Abstract

This study aimed to evaluate the analgesic effects of intramuscular and oral tramadol on postoperative analgesia in dogs undergoing ovariohysterectomy. Ten bitches that underwent ovariohysterectomy were divided in two groups. The group A, that contained five animals, received intramuscular tramadol on postoperati-ve, and the group B, that also contained five animals, received oral tramadol. The first drug administration was right after the end of the surgery while the others were realized each six hours, for 48 hours. A simple descriptive pain scale and a numeric rating scale were used for pain evaluation. The avaliator made a blind avalation. The pain analysis were made at 3, 6, 12, 24, 36 and 48 hours after preanesthetic medication administration. In 6 hours of postoperative, intramuscular tramadol had better results, seeming to cause better analgesy. However, in 24 hours of postoperative, the group that took oral tramadol reached score 0 for every animal at the simple descriptive pain scale while the group that was administered intramuscular tramadol still revealed one animal with score 1 and one animal with score 2 and in 36 hours still showed one animal with score 1. No animals had adverse effects. Between the two administration routes, intramuscular tramadol had na early analgesic effect, but the oral route reached score 0 for all the animals more quickly.