Levobupivacaína, ropivacaína ou lidocaína na anestesia palpebral em equinos: avaliação da pressão intra-ocular, da produção lacrimal e da eficácia do bloqueio anestésico
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Data
2009-09-26
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Universidade Federal de Goiás
Resumo
Corneal anesthesia is required in order to evaluate the intraocular pressure
(IOP) and eyelid blockades may also be necessary, using local anesthetic
agents in horses. The aim of this study was to evaluate the IOP and the
corneal touch threshold (CTT) at the central area of the cornea, after eyelid
blockades with anesthetic 0.75% ropivacaine, 0.75% levobupivacaine and
2% lidocaine. Nine adult female animals of undefined breed horses, which
received 2.0 ml of anesthetic for supraorbitary blockade and 2.5 ml for
auriculopalpebral blockagde. All animals were anesthetized with the three
anesthetic drugs, with an interval period of seven days between drugs,
performing a Latin square 3x3x3. The IOP and CTT were measured before
and 10, 20, 40, 60, 80 and 100 minutes after the blockades. The PIO was
maintained within the limits considered normal in all three anesthetic drug
groups evaluated. After 10 minutes, there was significantly CTT values
decrease for all three anesthetics. The recovery time of CTT was higher in
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the animals anesthetized with lidocaine than those anesthetized with
levobupivacaine and ropivacaine
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AMARAL, Andréia Vitor Couto do. Levobupivacaine, ropivacaine and lidocaine on the anesthesia eyelid in the horse: evaluation of intraocular pressure, tear production and the effectiveness of anesthesia. 2009. 115 f. Tese (Doutorado em Ciências Agrárias) - Universidade Federal de Goiás, Goiânia, 2009.