Luis Felipe Dutra Corrêa

Gastroesophageal reflux in dogs undergoing conventional ovariohysterectomy using different premedications

ABSTRACT Gastroesophageal reflux disease arises from the gastroduodenal content flow to the esophagus and/or associated organs, which leads to the wide range of signs and clinical implications. Incidence of intraoperative gastroesophageal reflux disease in dogs is unknown. The objective was, through flexible endoscopy, to assess the presence of gastroesophageal reflux in dogs undergoing ovariohysterectomy based on analgesic drugs used in premedication (morphine, tramadol or methadone). It was concluded that there was no difference in the incidence of intraoperative gastroesophageal reflux, these drugs dont influence this behavior; however, in the morphine group some animals showed preoperative vomiting. The severity of the reflux was higher, but not significantly, in bitches undergoing the methadone according to the evaluator method used for this research. Keywords:endoscopy, intraoperative regurgitation, surgery, premedication, canine INTRODUCAO uf020 O refluxo gastroesofagico (RGE) e definido como o fluxo de conteudo gastroduodenal para o esofago e adjacencias, que desencadeia varios sinais clinicos (Norton e Pena, 2000; Barczinski e Moraes-Filho, 2006; Carvalhaes

Meloxicam associado ou não ao tramadol no controle da dor após ovário-histerectomia videoassistida em cadelas

The aim of this study was to evaluate the efficacy of meloxicam with or without tramadol for pain control after laparoscopic-assisted ovariohysterectomy (OVH) by two-portal access. Were selected 14 healthy dogs to perform video-assisted OVHs. The animals were divided randomly into two groups (GM and GMT). The GM group received meloxicam (0.2mg kg-1, s.i.d), whereas the GMT group received the combination of meloxicam (0.2mg kg-1, s.i.d) and tramadol (4mg kg-1, tid), both for two days after surgery. To evaluate the post-surgical pain Melbourne and EVA scales were used, and blood glucose and serum cortisol were measured. There was no statistical difference when evaluating GM and GMT groups and the Melbourne scale or the visual analogue scale VAS. Cortisol measurements did not reach values higher than the reference for the species, while blood glucose levels did not present significant statistical variation throughout the evaluation time or between groups. With these results, we concluded that the use of meloxicam with or without the tramadol at the doses and dosage schedules proposed, is effective to control postoperative pain in bitches that had undergone video-assisted OVH with two-portal access.

Gemistocytic astrocytoma in the spinal cord in a dog: a case report

Relata-se um caso de uma variante rara de astrocitoma na medula cervical, diagnosticado em cadela com sinais neurologicos progressivos, inicialmente assimetricos, de tetraparesia nao ambulatoria, com reflexos segmentares e tonus muscular normais nos quatro membros e ausencia de dor a palpacao da coluna cervical. A mielografia revelou atenuacao da linha de contraste ventral e dorsal na regiao da terceira a quinta vertebra cervical. A necropsia, foi observada massa cilindrica intramedular que se estendia da terceira a sexta vertebra cervical, a qual substituia toda a substância cinzenta da medula espinhal. No estudo histologico, observou-se substituicao da substância por manto de celulas neoplasicas arranjadas frouxamente. As celulas eram grandes e levemente arredondadas. O citoplasma eosinofilico, bem delineado, por vezes formava processos interligando as celulas. O nucleo era excentrico, redondo, oval ou reniforme, e o nucleolo evidente. Logo, as alteracoes microscopicas observadas na medula espinhal cervical foram compativeis com astrocitoma gemistocitico.

Biópsia hepática celioscópica em jundiás (Rhamdia quelen)

Endosurgery has been used for assessment of fish celomatic cavity, as well as for obtaining biopsies for organic analysis. Such minimally invasive access may also be used for the analysis of environmental impact on biomarkers of pollution. In Brazil, studies and literature regarding the use of celioscopy in fish are sparse. The purpose of the current study was to develop a two-port celioscopy technique to obtain liver biopsy in silver catfish (Rhamdia quelen). Six adult female silver catfish were used. The animals were anesthetized and the inspection of the celomatic cavity were performed using a telescope and celioscopic-guided liver biopsy were taken using laparoscopic Kelly forceps. On the early postoperative period, the animals were released in a confined water reservoir where mortality could be checked. The liver samples were sent for histological assessment. There were no complications during surgery on early postoperative period. It was possible to visualize meticulously several organs (liver, spleen, stomach, pancreas, swim bladder, ovaries, bowel and transverse septum). In conclusion, the surgical technique and the anesthetic protocol proposed were suitable to perform liver biopsies in silver catfish and provided low morbidity.

Nefrectomia videolaparoscópica em Graxaim-do-campo (Pseudalopex gymnocercus) com displasia renal

Pampas fox (Pseudalopex gymnocercus) inhabits east-central South America, from southern Brazil to eastern Bolivia. The renal dysplasia comprises a spectrum of abnormalities and is often reported in dogs of various breeds; but this disease reports involve mostly necropsy findings. Congenital renal diseases in dogs have a progressive character, so that treatment is limited and directed to retard the disease. This report describes a laparoscopic nephrectomy in pampas fox with renal dysplasia. Right kidney disease was suspected by ultrasound and intravenous urography. For the surgical procedure we used three portal accesses (10, 10, 5mm), rigid endoscope 10mm/00 and clips for hemostasis of the renal vessels. Due the absence of reports of laparoscopic nephrectomy in pampas fox and scarcity of surgical techniques for this species, the operative technique used was similar to that used in the domestic dog. The pampas fox was monitored for 30 days after surgery without the occurrence of complications. This report demonstrates that the proposed technique is appropriate to perform laparoscopic nephrectomy in pampas fox.