Sarna demodécica em felinos em Santa Catarina, Brasil / Demodectic mange in felines in Santa Catarina state, Brazil

Background: Demodicosis is a parasitic dermatopathy often found in dogs and considered rare in felines. It is caused by the mite of the genus Demodex. In cats, it can be caused by 3 species: Demodex cati, Demodex gatoi, and another Demodex species not yet named. Demodicosis can be associated with systemic diseases, which can compromise the animal's immune system, as is the case of demodicosis caused by Demodex cati. The present case report describes 3 cases of demodicosis, 2 by D. cati and 1 by D. gatoi, with pruritic lesions and abrasions in different parts of the animals' bodies, but which showed improvement with common treatment. Cases: The first 2 cases refer to feline patients treated in Curitibanos and the third in Blumenau, both municipalities located in Santa Catarina. The first patient, a 6-year-old female, SRD, IVF/FeLV-negative, presented abrasions and alopecia in the cervical region, at the base of the auricle and submandibular region, with pruritus for 3 months. Skin scraping was performed revealing presence of Demodex cati. The second patient, a 11-year-old male, SRD, FIV-negative and FeLVpositive, presented alopecic lesions with mild pruritus, one on the dorsal region of the head and 2 others slightly oval on the tail. A skin scraping was performed for parasitological examination which demonstrated the presence of mites of the species Demodex cati. The third patient, a 10-month-old male Persian, IVF/FeLV-negative, had alopecic and pruritic lesions on the back and head near the auditory canal, as well as signs of external otitis. The lesions on the skin were scaly and presented a blackish appearance, with evolution of a few weeks. Skin scraping was performed for parasitological examination, confirming the presence of Demodex gatoi. In all cases, fungal cultures were negatives. For the 3 patients, fluralaner was used transdermally, as a pipette with a single application, and all showed complete improvement within 30 days after administration. Discussion: Demodicosis is considered a rare disease among felines and the literature suggests involvement when linked to immunosuppressive causes, such as viral diseases or systemic comorbidities. Still, it can become the cause of bacterial or fungal co-infections due to immunological impairment. In the 3 cases reported, only 1 patient was positive for FeLV. Parasitological examination of the skin by deep or superficial skin scraping, considered as the diagnostic method of choice for demodicosis, was performed in the 3 patients and demonstrated the presence of mites. Although the literature does not provide treatment considered to be of choice for felines, fluralaner was prescribed transdermally for the 3 patients reported here due to its practicality and prolonged time of action, administered in single application as antiparasitic therapy, achieving success and complete improvement up to 30 days after its use. The animals that presented co-infections were treated according to the type of infections they presented and their therapies of choice.

Etiologia microbiana e perfil de resistência bacteriana in vitro em otites externas de cães: estudo retrospectivo em animais atendidos na rotina de hospital veterinário (2013 a 2020) / Microbial etiology and in vitro bacterial resistance profile in external dogs otitis: retrospective study in animals attended in the routine of veterinary hospital (2013 to 2020) / Etiología microbiana y perfil de resistencia bacteriana in vitro en otitis externa en perros: estudio retrospectivo en animales atendidos en la rutina de hospital veterinario (2013 a 2020)

El objetivo de este estudio fue identificar la microbiota y describir el perfil de sensibilidad de las bacterias a los antimicrobianos en perros con otitis externa tratados en un hospital veterinario. Para ello, se analizaron 559 muestras otológicas de perros con clínica de otitis externa sometidas a cultivo y antibiograma. Hubo crecimiento de microorganismos en el 93,6% (523/559) de las muestras, y en el 88,5% (463/523) hubo crecimiento de bacterias, 5,7% (30/523) de levaduras y 5,7% (30/523) infecciones mixtas. Se obtuvieron 702 cepas, Staphylococcus spp. 55,1% (387/702), Pseudomonas spp. 11,8% (83/702) y Proteus mirabilis 9,8% (69/702) los agentes bacterianos más aislados. Entre las levaduras, Malassezia pachydermatis 10,3% (54/523) fue la más frecuente. En cuanto a los resultados del perfil de sensibilidad de las bacterias a los antimicrobianos, se observó que las bacterias Gram positivas Staphylococcus spp. y Streptococcus spp. mostraron mayor sensibilidad a amoxicilina + ácido clavulánico, con 92,5% y 100% de cepas sensibles. Las bacterias gram negativas Pseudomonas spp., P. mirabilis y Escherichia coli, presentaron sensibilidad mayor al 90% a la tobramicina. Entre todos los agentes bacterianos, Pseudomonas spp. fue el que mostró mayores tasas de resistencia frente a amoxicilina + ácido clavulánico (6,2%), cefalexina (7,4%) y sulfametoxazol + trimetoprima (13,6%)...

The objective of this work was to identify the microbial etiology and describe the sensitivity profile of bacteria to antimicrobials in dogs with otitis externa attended at a veterinary school hospital. For this, 559 otological samples from dogs with clinical signs of otitis externa submitted to culture and antibiogram were analyzed. There was growth of microorganisms in 93.6% (523/559) of the samples, and in 88.5% (463/523) there was the growth of bacteria, in 5.7% (30/523) the growth of yeasts and 5.7% (30/523) mixed infections. 702 strains were obtained, being Staphylococcus spp. 55.1% (387/702), Pseudomonas spp. 11.8% (83/702) and Proteus mirabilis 9.8% (69/702) the most isolated bacterial agents. Among yeasts, Malassezia pachydermatis 10.3% (54/523) was the most frequent. Regarding the results of the sensitivity profile of bacteria to antimicrobials, it was observed that Gram-positive bacteria Staphylococcus spp. and Streptococcus spp. showed greater sensitivity to amoxicillin + clavulanic acid, with 92.5% and 100% of sensitive strains. Gram-negative bacteria Pseudomonas spp., P. mirabilis and Escherichia coli, presented sensitivity greater than 90% to tobramycin. Among all bacterial agents, Pseudomonas spp. was the one that demonstrated the highest resistance rates against amoxicillin + clavulanic acid (6.2%), cephalexin (7.4%) and sulfamethoxazole + trimethoprim (13.6%)...

O objetivo deste trabalho foi identificar a etiologia microbiana e descrever o perfil de sensibilidade das bactérias aos antimicrobianos em cães com otite externa atendidos em serviço hospitalar médico veterinário. Para isso, foram analisadas 559 amostras otológicas de cães com sinais clínicos de otite externa submetidas à cultura e antibiograma. Houve crescimento de microrganismos em 93,6% (523/559) das amostras, sendo que em 88,5% (463/523) houve crescimento de bactérias, 5,7% (30/523) crescimento de leveduras e 5,7% (30/523) infecções mistas. Foram obtidas 702 cepas, sendo Staphylococcus spp. 55,1% (387/702), Pseudomonas spp. 11,8% (83/702) e Proteus mirabilis 9,8% (69/702) os agentes bacterianos mais isolados. Dentre as leveduras, Malassezia pachydermatis 10,3% (54/523) foi a mais freqüente. Em relação aos resultados do perfil de sensibilidade das bactérias aos antimicrobianos, observou-se que as bactérias Gram-positivas Staphylococcus spp. e Streptococcus spp. apresentaram maior sensibilidade a amoxicilina + ácido clavulânico, com 92,5% e 100% das cepas sensíveis. Já as bactérias Gram-negativas Pseudomonas spp., P. mirabilis e Escherichia coli, apresentaram sensibilidade superior a 90% a tobramicina. Dentre todos os agentes bacterianos, Pseudomonas spp. foi o que demonstrou as maiores taxas de resistência frente a amoxicilina + ácido clavulânico (6,2%), cefalexina (7,4%) e...

Etiologia microbiana e perfil de resistência bacteriana in vitro em otites externas de cães: estudo retrospectivo em animais atendidos na rotina de hospital veterinário (2013 a 2020) / Microbial etiology and in vitro bacterial resistance profile in external dogs otitis: retrospective study in animals attended in the routine of veterinary hospital (2013 to 2020) / Etiología microbiana y perfil de resistencia bacteriana in vitro en otitis externa en perros: estudio retrospectivo en animales atendidos en la rutina de hospital veterinario (2013 a 2020)

El objetivo de este estudio fue identificar la microbiota y describir el perfil de sensibilidad de las bacterias a los antimicrobianos en perros con otitis externa tratados en un hospital veterinario. Para ello, se analizaron 559 muestras otológicas de perros con clínica de otitis externa sometidas a cultivo y antibiograma. Hubo crecimiento de microorganismos en el 93,6% (523/559) de las muestras, y en el 88,5% (463/523) hubo crecimiento de bacterias, 5,7% (30/523) de levaduras y 5,7% (30/523) infecciones mixtas. Se obtuvieron 702 cepas, Staphylococcus spp. 55,1% (387/702), Pseudomonas spp. 11,8% (83/702) y Proteus mirabilis 9,8% (69/702) los agentes bacterianos más aislados. Entre las levaduras, Malassezia pachydermatis 10,3% (54/523) fue la más frecuente. En cuanto a los resultados del perfil de sensibilidad de las bacterias a los antimicrobianos, se observó que las bacterias Gram positivas Staphylococcus spp. y Streptococcus spp. mostraron mayor sensibilidad a amoxicilina + ácido clavulánico, con 92,5% y 100% de cepas sensibles. Las bacterias gram negativas Pseudomonas spp., P. mirabilis y Escherichia coli, presentaron sensibilidad mayor al 90% a la tobramicina. Entre todos los agentes bacterianos, Pseudomonas spp. fue el que mostró mayores tasas de resistencia frente a amoxicilina + ácido clavulánico (6,2%), cefalexina (7,4%) y sulfametoxazol + trimetoprima (13,6%)...(AU)

The objective of this work was to identify the microbial etiology and describe the sensitivity profile of bacteria to antimicrobials in dogs with otitis externa attended at a veterinary school hospital. For this, 559 otological samples from dogs with clinical signs of otitis externa submitted to culture and antibiogram were analyzed. There was growth of microorganisms in 93.6% (523/559) of the samples, and in 88.5% (463/523) there was the growth of bacteria, in 5.7% (30/523) the growth of yeasts and 5.7% (30/523) mixed infections. 702 strains were obtained, being Staphylococcus spp. 55.1% (387/702), Pseudomonas spp. 11.8% (83/702) and Proteus mirabilis 9.8% (69/702) the most isolated bacterial agents. Among yeasts, Malassezia pachydermatis 10.3% (54/523) was the most frequent. Regarding the results of the sensitivity profile of bacteria to antimicrobials, it was observed that Gram-positive bacteria Staphylococcus spp. and Streptococcus spp. showed greater sensitivity to amoxicillin + clavulanic acid, with 92.5% and 100% of sensitive strains. Gram-negative bacteria Pseudomonas spp., P. mirabilis and Escherichia coli, presented sensitivity greater than 90% to tobramycin. Among all bacterial agents, Pseudomonas spp. was the one that demonstrated the highest resistance rates against amoxicillin + clavulanic acid (6.2%), cephalexin (7.4%) and sulfamethoxazole + trimethoprim (13.6%)...(AU)

O objetivo deste trabalho foi identificar a etiologia microbiana e descrever o perfil de sensibilidade das bactérias aos antimicrobianos em cães com otite externa atendidos em serviço hospitalar médico veterinário. Para isso, foram analisadas 559 amostras otológicas de cães com sinais clínicos de otite externa submetidas à cultura e antibiograma. Houve crescimento de microrganismos em 93,6% (523/559) das amostras, sendo que em 88,5% (463/523) houve crescimento de bactérias, 5,7% (30/523) crescimento de leveduras e 5,7% (30/523) infecções mistas. Foram obtidas 702 cepas, sendo Staphylococcus spp. 55,1% (387/702), Pseudomonas spp. 11,8% (83/702) e Proteus mirabilis 9,8% (69/702) os agentes bacterianos mais isolados. Dentre as leveduras, Malassezia pachydermatis 10,3% (54/523) foi a mais freqüente. Em relação aos resultados do perfil de sensibilidade das bactérias aos antimicrobianos, observou-se que as bactérias Gram-positivas Staphylococcus spp. e Streptococcus spp. apresentaram maior sensibilidade a amoxicilina + ácido clavulânico, com 92,5% e 100% das cepas sensíveis. Já as bactérias Gram-negativas Pseudomonas spp., P. mirabilis e Escherichia coli, apresentaram sensibilidade superior a 90% a tobramicina. Dentre todos os agentes bacterianos, Pseudomonas spp. foi o que demonstrou as maiores taxas de resistência frente a amoxicilina + ácido clavulânico (6,2%), cefalexina (7,4%) e...(AU)

Otite média e interna com extensão para tronco encefálico em buldogue francês / Otitis media and internal with brainstem extension in a French bulldog

Background: Otitis is a frequent condition in dogs, with a multifactorial etiology covering primary causes, predisposing and perpetuating factors. It is characterized by an inflammatory process of structures that make up the auditory system, with prevalence data ranging from 15 to 20%, which can occur in any age group and without sex predisposition. According to the location, it can be classified as uni or bilateral, affecting the outer, middle and / or inner ear, the latter two being associated with neurological changes such as vestibulopathy, facial nerve paresis and Horner's syndrome. The morbidity and mortality of otitis media and internal may increase with delay in diagnosis, resulting in delay in the correct treatment, and the extension to brainstem is described in felines and considered rare in dogs. The present study aims to report an atypical case of otitis media and internal, with extension to the brain parenchyma in a brachycephalic dog. Case: A 3-year-old bitch French Bulldog was seen, weighing 12 kg, with a history of vomiting, apathy, nystagmus, ataxia and acute evolution hemiparesis. As a result of adoption, it was not known about the animal's morbid past. On special physical and clinical examination, depressed mental status, changes in postural reactions, nostril stenosis with unilateral mucopurulent nasal discharge, corneal ulcer, palpebral and labial ptosis, absence of eyelid reflex and spontaneous strabismus were observed, all of these findings observed on the left side of the face. No signs of otitis external to otoscopy were found. The clinical signs found characterize left facial nerve paresis and peripheral and central vestibulopathy. Otitis media / internal and meningoencephalitis were suspected. Hemogram, serum biochemistry (glucose, urea, creatinine, alanine aminotransferase, total proteins, albumin, globulin, alkaline phosphatase, gamma glutamyltransferase, phosphorus, total bilirubin, cholesterol and total calcium), urinalysis, rapid tests for erlichiosis, anaplasms , borreliosis, heartworm, distemper and leishmaniasis, CSF analysis, neurological panel performed by PCR (Polymerase Chain Reaction) that tested the animal for Bartonellosis, Lyme Disease (Borrelia burgdorferi), Blastomyces dermatitidis, Cryptococcus sp., Virus West Nile, Distemper, Toxoplasmosis, Neosporose and Coccidioides sp. using conjunctival swab, whole blood, urine and CSF samples. The samples were negative for all of these tests. As an image exam, brain magnetic resonance was performed. In the latter, otitis media and left internal was observed with extension of the lesion to the brain parenchyma. CSF analysis showed cytological changes compatible with a non-suppurative inflammatory process, mild pleocytosis with predominantly mononuclear leukocyte infiltrate. As a form of treatment, antibiotic therapy and total ablation of the auditory canal with lateral bulectomy were performed, showing good results with reduced clinical symptoms. Discussion: It is concluded that although the diagnosis of otitis media and internal with extension to brainstem is more common in cats, it should be included as a differential for central vestibular disorders in dogs, and that the diagnosis together with early and effective treatment are important, since that the evolution of the infection to the central nervous system represents a risk to the patient.

Laser photobiomodulation and antimicrobial photodynamic therapy in the treatment of ovine otitis

Background: Otitis is a severe inflammation of the skin of the auditory canal which can impact animals of all ages. Insheep, this disease can occur in isolated cases or in the entire flock. Laser photobiomodulation can be used in combination with medication or as single therapy and the effects are analgesia, modulation of the inflammatory process, edemareduction, tissue restoration and stimulation of local microcirculation. Antimicrobial photodynamic therapy stands out asa promising alternative to antimicrobial drugs for the treatment of localized infections. This study aimed to report the useof laser phototherapies on a sheep with bacterial otitis.Case: A case of bacterial otitis in a 4-year-old sheep, Dorper, was treated at the Veterinary Hospital of the State Universityof Santa Cruz. In the anamnesis, the owner reported that the patient presented crusts in the auricular pavilions, and hadbeen medicated with oxytetracycline 20%, administered intramuscularly, for two days and the crusts cleaned with iodine10%, but the animal did not present clinical improvement. On physical examination, the animal presented constant headswaying, edema of the ears, otalgia, enlarged parotid lymph nodes and ear wounds. No ear discharge was observed, andthe initial diagnosis was aural hematoma. The treatment prescribed was laser photobiomodulation for three consecutivedays. The lesions were irradiated with a diode laser with a power of 0.1 W, irradiance of 3.5 W/cm2, continuous emission,spot area of 0.028 cm2, wavelength of 808 nm, energy of 4J/point, and fluency/point of 142.8J/cm2, with seven pointson the external surface and four points on the internal surface of both ears. Two points were also targeted on the parotidlymph nodes with infrared laser (λ = 808 nm), with energy of 2J/point. On the fourth day of hospitalization, there was areduction in lesions, decreased edema and absence of pain and on the sixth day...

Laser photobiomodulation and antimicrobial photodynamic therapy in the treatment of ovine otitis

Background: Otitis is a severe inflammation of the skin of the auditory canal which can impact animals of all ages. Insheep, this disease can occur in isolated cases or in the entire flock. Laser photobiomodulation can be used in combination with medication or as single therapy and the effects are analgesia, modulation of the inflammatory process, edemareduction, tissue restoration and stimulation of local microcirculation. Antimicrobial photodynamic therapy stands out asa promising alternative to antimicrobial drugs for the treatment of localized infections. This study aimed to report the useof laser phototherapies on a sheep with bacterial otitis.Case: A case of bacterial otitis in a 4-year-old sheep, Dorper, was treated at the Veterinary Hospital of the State Universityof Santa Cruz. In the anamnesis, the owner reported that the patient presented crusts in the auricular pavilions, and hadbeen medicated with oxytetracycline 20%, administered intramuscularly, for two days and the crusts cleaned with iodine10%, but the animal did not present clinical improvement. On physical examination, the animal presented constant headswaying, edema of the ears, otalgia, enlarged parotid lymph nodes and ear wounds. No ear discharge was observed, andthe initial diagnosis was aural hematoma. The treatment prescribed was laser photobiomodulation for three consecutivedays. The lesions were irradiated with a diode laser with a power of 0.1 W, irradiance of 3.5 W/cm2, continuous emission,spot area of 0.028 cm2, wavelength of 808 nm, energy of 4J/point, and fluency/point of 142.8J/cm2, with seven pointson the external surface and four points on the internal surface of both ears. Two points were also targeted on the parotidlymph nodes with infrared laser (λ = 808 nm), with energy of 2J/point. On the fourth day of hospitalization, there was areduction in lesions, decreased edema and absence of pain and on the sixth day...(AU)

Resolução cirúrgica de pólipo inflamatório em ouvido médio de felino através da técnica de avulsão e tração por abordagem lateral: relato de caso / Surgical resolution of feline middle ear inflammatory polyp by lateral approach traction and avulsion technique: case report

O objetivo desse trabalho foi descrever um caso de pólipo inflamatório em ouvido médio de um felino e sua resolução cirúrgica através da avulsão e tração da massa após abordagem lateral. Um felino, fêmea, de 2 anos de idade, foi atendido no Hospital Veterinário Professor Sylvio Barbosa Cardoso, apresentando prurido intenso, dor e secreção fétida em região auricular. Pelo exame físico foi possível observar um nódulo em região de ouvido médio esquerdo. Associado a isso, o animal apresentava "headtilt" (inclinação da cabeça para o lado afetado). Foram solicitados exames hematológicos, radiografia de crânio e citologia da massa. O animal foi encaminhado para cirurgia de extirpação da massa. Foi feita uma incisão na pele sob o canal auditivo vertical palpável. A cartilagem foi liberada até o nível da junção entre as cartilagens auricular e anular. Com o auxílio de um fórceps, o pólipo foi agarrado e delicadamente girado até ser completamente extirpado de sua origem. A cartilagem e o subcutâneo foram fechados com material de sutura monofilamentar 4-0 e a pele foi fechada em um padrão de sutura subdérmica usando o mesmo material. A peça foi encaminhada para exame histopatológico, pelo qual confirmou-se a suspeita de pólipo inflamatório, através da observação de epitélio colunar ciliado. Utilizando a técnica cirúrgica TALA (avulsão e tração após abordagem lateral) foi possível obter melhora do quadro clínico do animal referido, rápida recuperação pós-cirúrgica e sem nenhuma complicação decorrente da técnica. Essa técnica, portanto, se mostrou satisfatória, melhorando significativamente a qualidade de vida do animal.

The aim of this study was to describe a case of inflammatory polyp in the middle ear of a cat and its surgical resolution through avulsion and mass traction after lateral approach. A female feline, two year old, was admitted at the Hospital Veterinário Professor Sylvio Barbosa Cardoso, presenting intense itching, pain and fetid discharge in the ear region. Physical examination revealed a nodule in the left middle ear region. Associated with this, the animal presented head tilt (inclination of the head to the affected side). Hematological examinations, skull radiography and mass cytology were requested. The animal was referred for polyp removal surgery. A skin incision was made under the palpable vertical ear canal. The cartilage was released to the level of the junction between the auricular and annular cartilages. With the help of a forceps, the polyp was grasped and gently rotated until completely removed from its origin. The cartilage and subcutaneous tissue were closed with 4-0 monofilament suture material and the skin was closed in a subdermal suture pattern using the same material. The piece was referred for histopathological examination, which confirmed the suspicion of inflammatory polyp by observing ciliated columnar epithelium. Using the TALA surgical technique (avulsion and traction after lateral approach) it was possible to obtain improvement of the clinical 3 picture of the referred animal, rapid postoperative recovery and without any complications resulting from the technique. This technique therefore proves satisfying, significantly improving the quality of life of the animal.

Ablação total do conduto auditivo em cão com otite crônica / Total ablation of hearing conduct in dog with chronic otite

A otite é uma inflamação do canal auditivo que pode acometer o ouvido externo e médio, sendo sua patogenia dividida em fatores perpetuadores, predisponentes e primários. Os sinais clínicos mais comuns são eritema, dor a palpação, prurido e exsudação. Além do hitórico e anamnese, radiografia, otoscopia e biopsia podem auxiliar no diagnóstico. O tratamento inicial tem o objetivo de controlar os fatores perpetuadores, eliminar os fatores predisponentes e fazer o controle da causa base. Nos casos de otite externa crônica recidivante, estenose do canal auditivo, deformidades auriculares, pólipos e neoplasias, indica-se fazer o tratamento cirúrgico. O presente trabalho relata o caso de um canino sem raça definida, com treze anos de idade, atendido no Hospital Veterinário da Universidade Federal Rural do Semi-árido (UFERSA), apresentando odor fétido no pavilhão auricular, excesso de cerúmen de coloração escura, eritema, prurido e dor aguda a palpar-se a base do pavilhão auricular esquerdo. Através da anamnese, exame físico e dos exames complementares como a radiografia, o animal foi diagnosticado com otite crônica. Optouse, então, pelo tratamento cirúrgico de ablação total do conduto auditivo (TECA), que consiste na retirada do canal vertical e horizontal do ouvido, associado à osteotomia lateral da bula timpânica. O procedimento cirúrgico foi eficaz no tratamento da otite crônica não responsiva ao tratamento medicamentoso realizado previamente nos últimos cinco anos feito de forma intermitente pelo tutor.

Otitis is an inflammation of the ear canal that can affect the outer and middle ear, and its pathogenesis is divided into perpetuating, predisposing and primary factors. The most common clinical signs are erythema, pain on palpation, itching and oozing. In addition to the history and anamnesis, radiography, otoscopy and biopsy can assist in the diagnosis. The initial treatment aims to control the perpetuating factors, eliminate predisposing factors and control the underlying cause. In cases of recurrent chronic external otitis, stenosis of the ear canal, ear deformities, polyps and neoplasms, surgical treatment is indicated. The present work reports the case of a 13-year-old mixed breed canine, attended at the Veterinary Hospital of the Federal Rural University of the Semi-arid (UFERSA), with a foul odor in the ear, excess of dark colored cerumen, erythema, itching and acute pain palpating the base of the left ear. Through anamnesis, physical examination and complementary tests such as radiography, the animal was diagnosed with chronic otitis. Then, we opted for the surgical treatment of total ablation of the auditory canal (TECA), which consists of the removal of the vertical and horizontal ear canal, associated with lateral osteotomy of the tympanic bulla. The surgical procedure was effective in the treatment of chronic otitis unresponsive to drug treatment previously performed in the last five years, done intermittently by the tutor.

Ablação total do conduto auditivo em cão com otite crônica / Total ablation of hearing conduct in dog with chronic otite

A otite é uma inflamação do canal auditivo que pode acometer o ouvido externo e médio, sendo sua patogenia dividida em fatores perpetuadores, predisponentes e primários. Os sinais clínicos mais comuns são eritema, dor a palpação, prurido e exsudação. Além do hitórico e anamnese, radiografia, otoscopia e biopsia podem auxiliar no diagnóstico. O tratamento inicial tem o objetivo de controlar os fatores perpetuadores, eliminar os fatores predisponentes e fazer o controle da causa base. Nos casos de otite externa crônica recidivante, estenose do canal auditivo, deformidades auriculares, pólipos e neoplasias, indica-se fazer o tratamento cirúrgico. O presente trabalho relata o caso de um canino sem raça definida, com treze anos de idade, atendido no Hospital Veterinário da Universidade Federal Rural do Semi-árido (UFERSA), apresentando odor fétido no pavilhão auricular, excesso de cerúmen de coloração escura, eritema, prurido e dor aguda a palpar-se a base do pavilhão auricular esquerdo. Através da anamnese, exame físico e dos exames complementares como a radiografia, o animal foi diagnosticado com otite crônica. Optouse, então, pelo tratamento cirúrgico de ablação total do conduto auditivo (TECA), que consiste na retirada do canal vertical e horizontal do ouvido, associado à osteotomia lateral da bula timpânica. O procedimento cirúrgico foi eficaz no tratamento da otite crônica não responsiva ao tratamento medicamentoso realizado previamente nos últimos cinco anos feito de forma intermitente pelo tutor.(AU)

Otitis is an inflammation of the ear canal that can affect the outer and middle ear, and its pathogenesis is divided into perpetuating, predisposing and primary factors. The most common clinical signs are erythema, pain on palpation, itching and oozing. In addition to the history and anamnesis, radiography, otoscopy and biopsy can assist in the diagnosis. The initial treatment aims to control the perpetuating factors, eliminate predisposing factors and control the underlying cause. In cases of recurrent chronic external otitis, stenosis of the ear canal, ear deformities, polyps and neoplasms, surgical treatment is indicated. The present work reports the case of a 13-year-old mixed breed canine, attended at the Veterinary Hospital of the Federal Rural University of the Semi-arid (UFERSA), with a foul odor in the ear, excess of dark colored cerumen, erythema, itching and acute pain palpating the base of the left ear. Through anamnesis, physical examination and complementary tests such as radiography, the animal was diagnosed with chronic otitis. Then, we opted for the surgical treatment of total ablation of the auditory canal (TECA), which consists of the removal of the vertical and horizontal ear canal, associated with lateral osteotomy of the tympanic bulla. The surgical procedure was effective in the treatment of chronic otitis unresponsive to drug treatment previously performed in the last five years, done intermittently by the tutor.(AU)

Use of the angularis oris axial pattern buccal flap for the correction of facial defects in six dogs

Background: Reconstructive surgery is an important area of veterinary surgery because it allows the reconstruction of large cutaneous defects in areas where a primary approach is not possible. Axial patterns flaps are composed by one direct cutaneous artery and vein, leading to a better blood supply with a good survival outcome. The angularis oris axial pattern buccal flap was introduced for correction of facial defects, but its versatility is not really explored in the existing literature. This article reports the use and complications of the angularis oris axial pattern buccal flap in six dogs, to treat defects in mandibular, temporal or labial regions. Cases: Five mixed breed dogs and one Labrador, with age between 4 and 9-year-old were submitted for surgery and the angularis oris axial pattern buccal flap was used to close the different defects. Causes of defect included a lesion caused by myiasis in three of the dogs, and tumoral removal in the other three, where two were mast cell tumors and one a keratinizing basal cell carcinoma. The regions affected included rostral mandible with oral mucosa, intermandibular region, temporal region and upper lip. Before flap confection the tissue was cleaned, resected and prepared properly, according to each cause of lesion. The flap was made with two parallel incisions, which center was usually the labial commissure, with the dorsal limits at the ventral aspect of the zygomatic arch, and the ventral incision on the ventral aspect of the mandibular ramus. Caudal extension was based on the length needed for surgical closure, but stained between the vertical auditory canal or up to atlas wing. Suture size and pattern depend the region and patient size. Patients were observed closely for any complication in the surgical site. From the six dogs presented here, five got some complications in the surgical site, including: lymphedema (2), suture dehiscence (4) and hematoma (1); however...

Use of the angularis oris axial pattern buccal flap for the correction of facial defects in six dogs

Background: Reconstructive surgery is an important area of veterinary surgery because it allows the reconstruction of large cutaneous defects in areas where a primary approach is not possible. Axial patterns flaps are composed by one direct cutaneous artery and vein, leading to a better blood supply with a good survival outcome. The angularis oris axial pattern buccal flap was introduced for correction of facial defects, but its versatility is not really explored in the existing literature. This article reports the use and complications of the angularis oris axial pattern buccal flap in six dogs, to treat defects in mandibular, temporal or labial regions. Cases: Five mixed breed dogs and one Labrador, with age between 4 and 9-year-old were submitted for surgery and the angularis oris axial pattern buccal flap was used to close the different defects. Causes of defect included a lesion caused by myiasis in three of the dogs, and tumoral removal in the other three, where two were mast cell tumors and one a keratinizing basal cell carcinoma. The regions affected included rostral mandible with oral mucosa, intermandibular region, temporal region and upper lip. Before flap confection the tissue was cleaned, resected and prepared properly, according to each cause of lesion. The flap was made with two parallel incisions, which center was usually the labial commissure, with the dorsal limits at the ventral aspect of the zygomatic arch, and the ventral incision on the ventral aspect of the mandibular ramus. Caudal extension was based on the length needed for surgical closure, but stained between the vertical auditory canal or up to atlas wing. Suture size and pattern depend the region and patient size. Patients were observed closely for any complication in the surgical site. From the six dogs presented here, five got some complications in the surgical site, including: lymphedema (2), suture dehiscence (4) and hematoma (1); however...(AU)

Condições clínicas do conduto auditivo externo e da membrana timpânica por meio de otoscopia em cães / Clinical conditions of external hearing conduct and timpanic membrane through otoscopy in dogs

Os objetivos do estudo foram avaliar as condições clínicas do conduto auditivo e da membrana timpânica (MT) através do exame otoscópico, correlacionando a utilização de ceruminolíticos e soluções tópica para a visualização das estruturas supracitadas. Realizou-se exames otoscópicos em 20 cães adultos, SRD, divididos em três grupos. Grupo Controle ou I (GI): cinco animais não receberam nenhum tipo de tratamento prévio à realização do exame otoscópico; Grupo II (GII): 10 cães receberam tratamento bilateral com ceruminolítico, composto por hidroxiquinolina (0,4 mg/mL) e trolamina (140 mg/L), nos três dias que antecederam aos exames; Grupo III (GIII): cinco cães receberam o mesmo tratamento do GII adicionando-se a lavagem bilateral dos ouvidos com solução fisiológica em temperatura ambiente (25 ºC) ao momento do exame. Procedeu-se a avaliação do conduto auditivo e da MT, realizando-se contenções física, seguida de química em todos os animais. Na avaliação da orelha encontrou-se odor fétido em 5,0% dos cães. No conduto auditivo, observou-se hiperemia em 40,0%, estenose em 20,0% e exsudato sanguinolento em 10,0% dos cães. Obstruções totais ou parciais dos condutos auditivos pelo excesso de cerúmen representaram 42,5% e 25,0% dos ouvidos; respectivamente. A MT foi observada em 45,0% dos cães, sendo 60% dos animais pertencentes ao GI, 50,0% do GII e 20,0% do GIII. Quando associada à hiperemia no conduto auditivo, a visualização da MT foi possível em 37,5% e nos casos de estenose foi visualizada em apenas 25,0% dos cães. Concluiu-se que o excesso de cerúmen e estenose do conduto auditivo foram as condições clínicas que mais interferiram na visualização das estruturas, independente do grupo ao qual os animais pertenciam, e limitaram a utilização do exame otoscópico como método diagnóstico. O uso de soluções tópicas no tratamento prévio à realização do exame otológico não demostrou ganho na visualização da MT dos cães, necessitando de melhorias nas técnicas utilizadas.

The objectives of the study was evaluated the clinical conditions of the ear canal and the tympanic membrane (TM) through otoscopic examination, correlating the use of ceruminolytics and topical solutions with visualization of the structures mentioned above. Otoscopic examinations were performed on 20 adult dogs, random breeded, divided into three groups. Control Group or I (GI): five animals didn’t receive any type of prior treatment to the otoscopic examination; Group II (GII): 10 dogs received bilateral treatment with ceruminolytic in the three days before the exams; Group III (GIII): five dogs received the same treatment as GII, adding bilateral lavage of the ears with physiological solution at room temperature (25 ºC) at the time of examination. The ear canal and TM were evaluated, and physical and chemical restraints were performed. In the evaluation of the ear was found fetid odor in 5.0% of the dogs. In the ear canal, hyperemia was observed in 40.0%, stenosis in 20.0% and bloody exudate in 10.0% of the dogs. Total or partial obstructions of the ear canal due to excess cerumen represented 42.5% and 25.0% of the ears; respectively. MT was observed in 45.0% of the dogs, 60% of the animals belonging to GI, 50.0% of GII and 20.0% of GIII. When associated with hyperemia in the ear canal, visualization of TM was possible in 37.5% and in cases of stenosis was visualized in only 25.0% of dogs. It was concluded that the excess of cerumen and stenosis of the ear canal were the clinical conditions that most interfered in the visualization of the structures and limited the use of otoscopic examination as diagnostic method. The use of topical solutions in the treatment prior to the otological examination did not demonstrate a gain in the TM of the dogs, requiring improvements in the techniques used.

Condições clínicas do conduto auditivo externo e da membrana timpânica por meio de otoscopia em cães / Clinical conditions of external hearing conduct and timpanic membrane through otoscopy in dogs

Os objetivos do estudo foram avaliar as condições clínicas do conduto auditivo e da membrana timpânica (MT) através do exame otoscópico, correlacionando a utilização de ceruminolíticos e soluções tópica para a visualização das estruturas supracitadas. Realizou-se exames otoscópicos em 20 cães adultos, SRD, divididos em três grupos. Grupo Controle ou I (GI): cinco animais não receberam nenhum tipo de tratamento prévio à realização do exame otoscópico; Grupo II (GII): 10 cães receberam tratamento bilateral com ceruminolítico, composto por hidroxiquinolina (0,4 mg/mL) e trolamina (140 mg/L), nos três dias que antecederam aos exames; Grupo III (GIII): cinco cães receberam o mesmo tratamento do GII adicionando-se a lavagem bilateral dos ouvidos com solução fisiológica em temperatura ambiente (25 ºC) ao momento do exame. Procedeu-se a avaliação do conduto auditivo e da MT, realizando-se contenções física, seguida de química em todos os animais. Na avaliação da orelha encontrou-se odor fétido em 5,0% dos cães. No conduto auditivo, observou-se hiperemia em 40,0%, estenose em 20,0% e exsudato sanguinolento em 10,0% dos cães. Obstruções totais ou parciais dos condutos auditivos pelo excesso de cerúmen representaram 42,5% e 25,0% dos ouvidos; respectivamente. A MT foi observada em 45,0% dos cães, sendo 60% dos animais pertencentes ao GI, 50,0% do GII e 20,0% do GIII. Quando associada à hiperemia no conduto auditivo, a visualização da MT foi possível em 37,5% e nos casos de estenose foi visualizada em apenas 25,0% dos cães. Concluiu-se que o excesso de cerúmen e estenose do conduto auditivo foram as condições clínicas que mais interferiram na visualização das estruturas, independente do grupo ao qual os animais pertenciam, e limitaram a utilização do exame otoscópico como método diagnóstico. O uso de soluções tópicas no tratamento prévio à realização do exame otológico não demostrou ganho na visualização da MT dos cães, necessitando de melhorias nas técnicas utilizadas. (AU)

The objectives of the study was evaluated the clinical conditions of the ear canal and the tympanic membrane (TM) through otoscopic examination, correlating the use of ceruminolytics and topical solutions with visualization of the structures mentioned above. Otoscopic examinations were performed on 20 adult dogs, random breeded, divided into three groups. Control Group or I (GI): five animals didnt receive any type of prior treatment to the otoscopic examination; Group II (GII): 10 dogs received bilateral treatment with ceruminolytic in the three days before the exams; Group III (GIII): five dogs received the same treatment as GII, adding bilateral lavage of the ears with physiological solution at room temperature (25 ºC) at the time of examination. The ear canal and TM were evaluated, and physical and chemical restraints were performed. In the evaluation of the ear was found fetid odor in 5.0% of the dogs. In the ear canal, hyperemia was observed in 40.0%, stenosis in 20.0% and bloody exudate in 10.0% of the dogs. Total or partial obstructions of the ear canal due to excess cerumen represented 42.5% and 25.0% of the ears; respectively. MT was observed in 45.0% of the dogs, 60% of the animals belonging to GI, 50.0% of GII and 20.0% of GIII. When associated with hyperemia in the ear canal, visualization of TM was possible in 37.5% and in cases of stenosis was visualized in only 25.0% of dogs. It was concluded that the excess of cerumen and stenosis of the ear canal were the clinical conditions that most interfered in the visualization of the structures and limited the use of otoscopic examination as diagnostic method. The use of topical solutions in the treatment prior to the otological examination did not demonstrate a gain in the TM of the dogs, requiring improvements in the techniques used. (AU)

Cistomatose ceruminosa em felino Persa: relato de caso / Feline ceruminous cystomatosis in a Persian cat: a case report

Neste trabalho, os autores relatam o caso de um gato Persa, macho, de cinco anos e meio de idade, atendido na Cidade do Rio de Janeiro apresentando nódulos auriculares diagnosticados por histopatologia como cistomatose ceruminosa. Por tratar-se de uma afecção pouco comum, de etiologia desconhecida e fácil resolução, os autores objetivaram divulgá-la, descrevendo os principais sinais clínicos e tratamentos. Como terapia, foi realizadaa excisão cirúrgica dos cistos com bisturi elétrico e não houve recidiva nos últimos três anos. Sugere-se que os cistos benignos podem malignizar, além de dificultarem o asseio do conduto auditivo levando ao acúmulo de cerúmen e, consequentemente, a infecções secundárias (otite externa) por proliferação microbiana.(AU)

In this case report the authors describe the presence of nodules in the concave pinna of a five years-old male Persian cat brought to veterinary clinic care in Rio de Janeiro in 2015, diagnosed by histopathology as ceruminous cystomatosis. As it is an uncommon disorder of unknown etiology and easy treatment, the authors aim to elucidate the main clinical signs associated and treatment used. The ablation of cysts was performed withan electric bistoury and no recurrency was reported within three years. It is suggested that benign cysts can progress to malignancy, besides, lesions can disrupt normal self-cleaning of the auditory canal leading to secondary otitis externa by microbial proliferation.(AU)

Cistomatose ceruminosa em felino Persa: relato de caso / Feline ceruminous cystomatosis in a Persian cat: a case report

Neste trabalho, os autores relatam o caso de um gato Persa, macho, de cinco anos e meio de idade, atendido na Cidade do Rio de Janeiro apresentando nódulos auriculares diagnosticados por histopatologia como cistomatose ceruminosa. Por tratar-se de uma afecção pouco comum, de etiologia desconhecida e fácil resolução, os autores objetivaram divulgá-la, descrevendo os principais sinais clínicos e tratamentos. Como terapia, foi realizadaa excisão cirúrgica dos cistos com bisturi elétrico e não houve recidiva nos últimos três anos. Sugere-se que os cistos benignos podem malignizar, além de dificultarem o asseio do conduto auditivo levando ao acúmulo de cerúmen e, consequentemente, a infecções secundárias (otite externa) por proliferação microbiana.

In this case report the authors describe the presence of nodules in the concave pinna of a five years-old male Persian cat brought to veterinary clinic care in Rio de Janeiro in 2015, diagnosed by histopathology as ceruminous cystomatosis. As it is an uncommon disorder of unknown etiology and easy treatment, the authors aim to elucidate the main clinical signs associated and treatment used. The ablation of cysts was performed withan electric bistoury and no recurrency was reported within three years. It is suggested that benign cysts can progress to malignancy, besides, lesions can disrupt normal self-cleaning of the auditory canal leading to secondary otitis externa by microbial proliferation.

Is Malassezia nana the main species in horses ear canal microbiome?

The objective of this study was to characterize genotypically Malassezia spp. isolated from the external ear canal of healthy horses. Fifty-five horses, 39 (70.9%) males and 16 (29.1%) females, from different breeds and adults were studied. External ear canals were cleaned and a sterile cotton swab was introduced to collect cerumen. A total of 110 samples were cultured into Dixon medium and were incubated at 32 °C for up to 15 days. Macro- and micromorphology and phenotypic identification were performed. DNA was extracted, strains were submitted to polymerase chain reaction technique, and the products obtained were submitted to Restriction Fragment Length Polymorphism using the restriction enzymes BstCI and HhaI. Strains were sent off to genetic sequencing of the regions 26S rDNA D1/D2 and ITS1-5.8S-ITS2 rDNA. Malassezia spp. were isolated from 33/55 (60%) animals and 52/110 (47%) ear canals. No growth on Sabouraud dextrose agar was observed, confirming the lipid dependence of all strains. Polymerase chain reaction-Restriction fragment length polymorphism permitted the molecular identification of Malassezia nana - 42/52 (81%) and Malassezia slooffiae - 10/52 (19%). Sequencing confirmed RFLP identification. It was surprising that M. nana represented over 80% of the strains and no Malassezia equina was isolated in this study, differing from what was expected.(AU)

Microtia e atresia congênita do canal auditivo em cão: relato de caso / Microtia and congenital external auditory canal atresia in dog: case report

Descreve-se o caso de um cão, Pinscher, fêmea de 11 meses de idade, com alteração anatômica da orelha do lado direito. Após avaliação, foi realizado o diagnóstico clínico e o radiográfico de microtia com atresia do canal auditivo do lado direito. Como o animal não apresentava sinais de alterações no sistema vestibular ou otite, optou-se pelo acompanhamento clínico do caso. A microtia, caracterizada pela hipoplasia parcial ou completa da pina, assim como outras anomalias do conduto auditivo, é raramente descrita em medicina veterinária. De acordo com a revisão de literatura realizada, este é o primeiro relato ocorrido no Brasil de um cão com microtia e atresia congênita do canal auditivo sem a associação de síndrome vestibular.(AU)

This paper describes an 11-month-old female Pinscher dog, with anatomical changes of the ear on the right side. After physical exam, clinical and radiographic diagnosis of microtia with ear canal atresia on the right side was made. As the animal did not show any signs of vestibular system changes or ear infections, the veterinarians opted for monitoring the patient. Microtia, characterized by the partial or complete hypoplasia of pina, as well as other abnormalities of ear canal are rarely described in veterinary medicine. As far as the author´s knowledge by literature review carried out, this is the first report of a dog with microtia and congenital ear canal atresia not associated with vestibular syndrome in Brazil.(AU)

Microtia e atresia congênita do canal auditivo em cão: relato de caso / Microtia and congenital external auditory canal atresia in dog: case report

Descreve-se o caso de um cão, Pinscher, fêmea de 11 meses de idade, com alteração anatômica da orelha do lado direito. Após avaliação, foi realizado o diagnóstico clínico e o radiográfico de microtia com atresia do canal auditivo do lado direito. Como o animal não apresentava sinais de alterações no sistema vestibular ou otite, optou-se pelo acompanhamento clínico do caso. A microtia, caracterizada pela hipoplasia parcial ou completa da pina, assim como outras anomalias do conduto auditivo, é raramente descrita em medicina veterinária. De acordo com a revisão de literatura realizada, este é o primeiro relato ocorrido no Brasil de um cão com microtia e atresia congênita do canal auditivo sem a associação de síndrome vestibular.(AU)

This paper describes an 11-month-old female Pinscher dog, with anatomical changes of the ear on the right side. After physical exam, clinical and radiographic diagnosis of microtia with ear canal atresia on the right side was made. As the animal did not show any signs of vestibular system changes or ear infections, the veterinarians opted for monitoring the patient. Microtia, characterized by the partial or complete hypoplasia of pina, as well as other abnormalities of ear canal are rarely described in veterinary medicine. As far as the author´s knowledge by literature review carried out, this is the first report of a dog with microtia and congenital ear canal atresia not associated with vestibular syndrome in Brazil.(AU)

Isolamento microbiológico do canal auditivo de cães saudáveis e com otite externa na região metropolitana de Recife, Pernambuco / Microbiological isolation from the ear canal of healthy dogs and with otitis externa in the metropolitan region of Recife, Pernambuco

Otite externa (OE) é o termo utilizado para definir a inflamação do conduto auditivo externo; esta doença possui diversas etiologias, ocorre em várias espécies e é particularmente frequente em cães. Os microrganismos da microbiota residente comumente estão envolvidos na etiopatogenia da OE, sendo apontados como agentes perpetuadores da doença. O objetivo deste estudo foi investigar o perfil microbiológico de cães com conduto auditivo saudável e com otite na região metropolitana do Recife. Com o auxílio de suabes estéreis foram coletadas amostras das orelhas direita e esquerda de 41 cães, sendo 11 com OE e 30 sem OE. Foi realizado o isolamento bacteriano e fúngico das amostras cultivadas; observou-se positividade em 80% dos cães com orelhas saudáveis e presença de mais de um microrganismo em 38 amostras (63,3%); já nos cães com OE, a positividade foi 95,3%, com infecção polimicrobiana em 77,3% das amostras. No que se refere aos gêneros bacterianos, o perfil de isolamento microbiológico foi idêntico entre os cães otopatas e sadios. Os microrganismos isolados foram Staphylococcus sp., Micrococcus, Bacillus sp., Streptococcus sp. e Malassezia sp.(AU)

Otitis externa (OE) is the term used to describe inflammation of the external ear canal. This disease has many etiologies, occurs in several species and is particularly common in dogs. The resident microbiota microorganisms are commonly involved in the OE etiopathogenesis, being frequently appointed as perpetuator agents. The aim of this study was to investigate the microbiological profile of dogs with healthy ears and of others with otitis in the metropolitan region of Recife, Pernambuco, Brazil. With the aid of sterile swabs, samples of right and left ear of 41 dogs, 11 with and 30 without OE, were collected. Bacterial and fungal isolation was performed with cultured samples; positivity was observed in 80% of animals with healthy ears, with the presence of more than one microrganism in 38 samples (63.3%), whereas in dogs with OE, the positivity was 95.3% with polymicrobial infection in 77.3% samples. With regard to the genus, the microbiological profile was identical between healthy and diseased dogs. The microrganisms isolated were Staphylococcus sp., Micrococcus, Bacillus sp., Streptococcus sp. and Malassezia sp.(AU)

Detecção e tratamento de otite por Rhabditis blumi em bovinos da região Norte do Brasil / Detection and treatment of otitis by Rhabditis blumi in cattle of northern Brazil

O presente estudo teve como objetivo descrever a ocorrência de otite parasitária causada por Rhabditis blumi em bovinos leiteiros de raça Gir de uma fazenda da região Norte do Brasil. Foram coletadas amostras de 42 bovinos por swab e lavado dos condutos auditivos externos (CAE). Ao exame clínico, 9,5% (4/42) dos bovinos apresentavam sintomatologia nervosa, como leve a moderada rotação da cabeça, apatia, flacidez dos lábios e ptose palpebral unilateral, alopecia das regiões da cabeça e cupim, causados pelo desconforto e prurido da região auricular, alteração na mastigação e acúmulo de alimento na cavidade oral. Adicionalmente, 71,4% (30/42) dos abovinos mostraram a presença do parasita no cerúmen dos condutos auditivos. À análise microscópica do material do saco conjuntival foi observado presença do parasita em 90% (9/10) dos bovinos avaliados. Os 30 bovinos positivos para Rhabditis spp. foram distribuídos aleatoriamente em três grupos de 10 animais: (G1) Bovinos controle, (G2) Bovinos tratados com ivermectina 1% pour on e (G3) Bovinos submetidos a lavado dos condutos auditivos externos (CAE). Cada tratamento foi repetido três vezes com intervalo de sete dias. No G1 os 10 bovinos mantiveram-se infectados durante todo o estudo. No G2 20% dos bovinos foram negativos após os dois primeiros tratamentos, porém, mostraram-se positivos na terceira avaliação. No G3 todos os bovinos mantiveram-se positivos, sendo observada apenas diminuição da carga parasitária. A identificação por análise molecular por meio de fragmentos amplificados da expansão D2/D3 do 28S rDNA confirmou a presença apenas da espécie Rhabditis blumi nos animais. Baseado nas observações clínicas, morfológicas e moleculares pode-se relatar o primeiro caso de R. blumi em bovinos da raça Gir no Estado do Pará, através da compra de animais oriundos de áreas onde a otite parasitária tem sido diagnosticada, principalmente de Minas Gerais, para formar animais mestiços (Gir x Holandês). Desta forma ressalta-se a importância do exame clínico prévio dos animais a serem transferidos para outras propriedades ou regiões. Este relato também parece ser o primeiro sobre a presença de R. blumi no saco conjuntival de bovinos. O tratamento com ivermectina no G2 não surtiu melhora clínica dos bovinos.(AU)

This study aimed to describe the occurrence of parasitic otitis caused by Rhabditis blumi in dairy cattle of the Gir race from a farm in northern Brazil. Forty-two samples were collected from cattle by swab washed from the external auditory canal (EAC). On clinical examination, in 71.4% (30/42) of the cattle the parasite was found in the cerumen of the ear canal, along with alopecia of head and hump caused by discomfort and itching of the auricular region. At microscopic analysis of material from the conjunctival sac the parasite was found in 90% (9/10) of the evaluated cattle. In addition, 9.5% (4/42) of the cattle showed nervous symptoms, such as mild to moderate rotation of the head, apathy, flaccid lips and unilateral ptosis, change in chewing and food accumulation in the oral cavity. Thirty cattle positive for Rhabditis spp. were randomly divided into three groups of 10 animals each: (G1) Cattle Control, (G2) Cattle treated with ivermectin 1% pour-on, and (G3) Cattle undergoing wash of the external auditory canal (EAC). Each treatment was repeated three times with intervals of seven days. In G1, 10 cattle remained infected throughout the study. In G2, 20% of the cattle were negative after the first two treatments, however were positive at the third evaluation. In G3, all cattle remained positive, but with decrease in parasite load. Identification by molecular analysis of amplified fragments through the expansion D2/D3 28S rDNA confirmed the presence of only Rhabditis blumi. Based on clinical, morphologic and molecular examination, it appears to be the first report of the occurrence of R. blumi infection in Gir cattle in the State of Pará, due to the purchase of cattle from areas where parasitic otitis has been diagnosed, as from Minas Gerais, to produce crossbred animals (Gir x Holstein). This emphasizes the importance of prior clinical examination by the veterinary service in order to transfer only healthy animals to other properties or regions. This appears also to be the first report on R. blumi infection of the conjunctival sac in cattle. Treatment with ivermectin in G2 did not produce clinical improvement.(AU)