Get access

Antibacterial Susceptibility Patterns of Pseudomonas Strains Isolated from Chronic Canine Otitis Externa

Authors

  • J. L. Martín Barrasa,

    1. Address of authors: Departamento de Microbiología, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, Apartado de Correos 550, 35080 Las Palmas de Gran Canaria (Canary Islands), Spain;
    Search for more papers by this author
  • P. Lupiola Gómez,

    1. Address of authors: Departamento de Microbiología, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, Apartado de Correos 550, 35080 Las Palmas de Gran Canaria (Canary Islands), Spain;
    Search for more papers by this author
  • Z. González Lama,

    1. Address of authors: Departamento de Microbiología, Facultad de Veterinaria, Universidad de Las Palmas de Gran Canaria, Apartado de Correos 550, 35080 Las Palmas de Gran Canaria (Canary Islands), Spain;
    Search for more papers by this author
  • M. T. Tejedor Junco

    1. Corresponding author
    Search for more papers by this author

Departamento de Microbiología, Universidad de Las Palmas de Gran Canaria, Spain

Abstract

Development of antibiotic resistance in bacteria is a problem of great concern. It is important to establish the convenience of antimicrobial susceptibility tests in animal infections. The aim of this study was to test the susceptibility to antibiotics of Pseudomonas strains isolated from chronic canine otitis externa. We tested 23 strains of Pseudomonas: 19 Ps. aeruginosa, three Ps. fluorescens and one Pseudomonas spp. The most effective antibiotics were tobramycin (100 % susceptible), marbofloxacin (91.3 %) and ceftazidime (91.3 %). Ticarcillin and gentamicin, commonly used for the treatment of otitis externa also showed good results (susceptibility of strains was 86 and 65.2 % respectively). Lower susceptibility was found using enrofloxacin (52.1 %) probably due to its indiscriminate use. We emphasize the need for a rational policy of antibiotic prescribing in order to prevent the selection of resistant strains.

Ancillary