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)

Authors

  • Carolina Magri Ferraz Laboratório de Microbiologia e Imunologia Veterinária, Universidade Vila Velha, Brasil
  • Joyce Natachi Suave Morais Laboratório de Microbiologia e Imunologia Veterinária, Universidade Vila Velha, Brasil
  • Barbara Loureiro Hospital Veterinário Professor Ricardo Alexandre Hippler, Universidade Vila Velha - UVV, Brasil
  • Jossiara Abrante Rodrigues Laboratório de Parasitologia Veterinária, Instituto Federal da Paraíba -IFPB, campus Sousa, Brasil
  • Vinicius Longo Ribeiro Vilela Laboratório de Parasitologia Veterinária, Instituto Federal da Paraíba -IFPB, campus Sousa, Brasil
  • Adriane Pimenta da Costa-Val Bicalho Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais – UFMG, Brasil
  • Rodrigo dos Santos Horta Departamento de Clínica e Cirurgia Veterinárias, Escola de Veterinária, Universidade Federal de Minas Gerais – UFMG, Brasil
  • Hélio Langoni Departamento de Produção Animal e Medicina Veterinária Preventiva, Faculdade de Medicina Veterinária e Zootecnia – UNESP, Brasil
  • Fabio Ribeiro Braga Universidade Vila Velha
  • Fernando Luiz Tobias Laboratório de Microbiologia e Imunologia Veterinária, Universidade Vila Velha - UVV, Brasil

DOI:

https://doi.org/10.35172/rvz.2021.v28.578

Keywords:

Auditory canal. Yeasts. Otopathies. Bacterial resistance. Staphylococcus spp

Abstract

The objective of this work was to identify the microbiota 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%). The results of the present study indicated that most external otitis in dogs is related to bacterial infections, demonstrating the importance for bacterial culture associated with antimicrobial sensitivity tests for correct diagnosis and treatment of these infections.

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Additional Files

Published

2021-05-10

How to Cite

1.
Ferraz CM, Morais JNS, Loureiro B, Rodrigues JA, Vilela VLR, Bicalho AP da C-V, Horta R dos S, Langoni H, Braga FR, Tobias FL. 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). RVZ [Internet]. 2021 May 10 [cited 2024 Nov. 22];28:1-10. Available from: https://rvz.emnuvens.com.br/rvz/article/view/578

Issue

Vol. 28 (2021)

Section

Original Articles

License

Licença Creative Commons
Este obra está licenciado com uma Licença Creative Commons Atribuição-NãoComercial 4.0 Internacional.

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