Bloqueio anestésico retrobulbar para enucleação em gato: relato de caso

Abstract

Retrobulbar anesthesia was first described in 1884 to perform enucleation. The most frequent indications for enucleation are trauma, intraocular tumors, secondary glaucoma and aesthetic disfigurement. Conductive anesthesia must obey the general principles of ophthalmic surgery, which are: absolute immobility, low intraocular pressure, decreased bleeding and abolition of the ROC oculocardiac reflex. The manifestation of ROC is mainly due to bradycardia, atrioventricular block and bigemine and ectopic waves. The surgical enucleation procedure was performed on a feline, 21-year-old male, SRD who had tumoral masses that compromised the eye. Retrobulbar anesthesia has the advantage of reducing the minimum alveolar concentration and, as a result, causes less cardiovascular depression in the animal, which is important for geriatric patients, as in this case. In addition, it produces central desensitization and postoperative residual analgesia