Avaliação de seis protocolos de sedação para procedimentos odontológicos em equinos

Abstract

To perform dental procedures, a well restrained horse is an essential need. This study aims to evaluate six sedative protocols to evaluate six sedation protocols to perform dental procedures. Five geldings were sedated with the follow protocols: (MD) medetomidine (0,01mg/kg/iv), (X) xylazine (1,0mg/kg/iv) alone or xylazine (1,0mg/kg/iv) followed immediately by butorfanol (XB) (0,01mg/kg/iv) or pethidine (XP) (1,1mg/kg/im) or tramadol (XT) (1,0mg/kg/im) or fentanil (XF) (0,001mg/kg/iv). The variables studied were: behavior, ataxia score, total time and beginning, head position,RR, HR, mucous membranes collor, refill time, mouth speculum reaction, tongue tonus, pain sensibility of the periodontum, water stimuli, power dental float auditory stimuli (before introducing in to the mouth) and power dental floating response. The physical examinations were done ten minutes before (T0) and every ten minutes (T1 to T5) after the drugs administration, with total time of 50 minutes. The dental procedures were done every ten minutes after the drugs administration until the mouth speculum was removed (T1 to T4), with total time of 30 minutes. The ataxia began 2,00 ± 0,53 minutes after the drugs administration and XP resulted in the longest and MD the shortest ataxia time. At T1, XP induced lower respiratory rate, compared to XB. At T2, XB and XP were more effective to reduce the response to power dental floating when compared to X and XT. Was concluded that all the sedation protocols were effective to promote sedation and analgesia in horses necessary to dentistry procedures in standing position, for about 30 minutes.