How to treat<i>Pseudomonas</i>otitis in dogs

Barnard, Natalie; Foster, Aiden P

doi:10.1136/vr.k413

Cited by 5 publications

(4 citation statements)

References 8 publications

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“…Pseudomonas spp., 11,8% (83/702) e P. mirabilis 9,8% (69/702) foram os agentes bacterianos gram-negativos mais frequentes. Estes patógenos, de origem comumente hídrica, estão frequentemente associados à otites crônicas em cães (24). Em estudo similar, Oliveira et al (25) observaram que o segundo agente mais isolado foi P. aeruginosa, mais frequente em infecções polimicrobianas.…”

Section: Resultsunclassified

Perfil De Resistência Bacteriana Em Otites Externas De Cães Atendidos Em Hospital Veterinário

Ferraz

Morais

Loureiro

et al. 2021

RVZ

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O objetivo deste trabalho foi identificar a microbiota 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 sulfametoxazol + trimetoprima (13,6%). Os resultados do presente estudo indicaram que a maior parte das otites externas em cães está relacionada com infecções bacterianas, demonstrando a importância da realização de cultura bacteriana associada aos testes de sensibilidade aos antimicrobianos para corretos diagnóstico e tratamento dessas infecções.

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Section: Resultsunclassified

Perfil De Resistência Bacteriana Em Otites Externas De Cães Atendidos Em Hospital Veterinário

Ferraz

Morais

Loureiro

et al. 2021

RVZ

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“…These findings corroborated a report from Egypt that found 20% P. aeruginosa isolates from canine ear infections. Additionally, P. aeruginosa resistance to b-lactam antibiotics complicates the treatment of P. aeruginosa infection (Al-Charrakh et al, 2016;Cavallo et al, 2000;Barnard and Foster 2018;KuKanich et al, 2022;Okonkwo and Achilike, 2022). According to Morales-Espinosa et al (2012).…”

Section: Discussionmentioning

confidence: 99%

Pseudomonas that Causes Otitis in Dogs: An Increasing Opposition

2024

IJAB

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Article HistoryThis study investigated the prevalence and antibiotic susceptibility of Pseudomonas aeruginosa isolated from canine otitis externa in Baghdad, Iraq. Twelve ear swabs were collected from symptomatic dogs between October 2021 and February 2022. Identification of P. aeruginosa isolates was confirmed by a combination of phenotypic (morphology, Gram stain, biochemical tests) and genotypic (Vitek2 and PCR) methods. All isolates exhibited complete resistance to Erythromycin, Trimethoprim, and Chloramphenicol, and high resistance to Nalidixic acid (91.6%). Conversely, susceptibility was observed against Imipenem and Penicillin G (100%), Polymyxin B and Ceftazidime (91.6%), Streptomycin (58.3%), and Ceftriaxone (58.3%). Additionally, all isolates demonstrated the ability to produce hemolysin and phospholipase C, indicating potential virulence properties. The aforementioned results underscore the frequency of multidrug-resistant P. aeruginosa in cases of canine otitis externa and stress the significance of testing for antibiotic susceptibility in order to make well-informed treatment decisions.

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“…There are little data on treatment failure in animals; however, a paper by Hawkins et al (2010) on a novel therapeutic reported inclusion criteria for dogs with otitis of at least 3 months with at least three failed antibiotic treatments and therefore suggests treatment failure is an issue. Effective treatments can be challenging and reoccurrence of infection following the cessation of treatment has been reported (Barnard and Foster, 2018). A study on 20 dogs with pyoderma caused by P. aeruginosa , one dog (5%) displayed treatment failure.…”

Section: Assessmentmentioning

confidence: 99%

“…A study on 20 dogs with pyoderma caused by P. aeruginosa , one dog (5%) displayed treatment failure. The remaining dogs were treated for between 3 and 12 weeks and showed resolution of infection (Barnard and Foster, 2018).…”

Section: Assessmentmentioning

confidence: 99%

Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): antimicrobial‐resistant Pseudomonas aeruginosa in dogs and cats

Nielsen¹,

Bicout²,

Calistri³

et al. 2022

EFS2

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Pseudomonas aeruginosa (P. aeruginosa) was identified among the most relevant antimicrobial‐resistant (AMR) bacteria in the EU for dogs and cats in a previous scientific opinion. Thus, it has been assessed according to the criteria of the Animal Health Law (AHL), in particular criteria of Article 7 on disease profile and impacts, Article 5 on its eligibility to be listed, Annex IV for its categorisation according to disease prevention and control rules as in Article 9, and Article 8 for listing animal species related to the bacterium. The assessment has been performed following a methodology previously published. The outcome is the median of the probability ranges provided by the experts, which indicates whether each criterion is fulfilled (lower bound ≥ 66%) or not (upper bound ≤ 33%), or whether there is uncertainty about fulfilment. Reasoning points are reported for criteria with uncertain outcome. According to the assessment here performed, it is uncertain whether AMR P. aeruginosa can be considered eligible to be listed for Union intervention according to Article 5 of the AHL (33–90% probability). According to the criteria in Annex IV, for the purpose of categorisation related to the level of prevention and control as in Article 9 of the AHL, the AHAW Panel concluded that the bacterium does not meet the criteria in Sections 1, 2, 3 and 4 (Categories A, B, C and D; 0–5%, 1–5%, 5–33% and 5–33% probability of meeting the criteria, respectively) and the AHAW Panel was uncertain whether it meets the criteria in Section 5 (Category E, 33–90% probability of meeting the criteria). The animal species to be listed for AMR P. aeruginosa according to Article 8 criteria are mainly dogs and cats.

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How to treatPseudomonasotitis in dogs

Cited by 5 publications

References 8 publications

Perfil De Resistência Bacteriana Em Otites Externas De Cães Atendidos Em Hospital Veterinário

Perfil De Resistência Bacteriana Em Otites Externas De Cães Atendidos Em Hospital Veterinário

Pseudomonas that Causes Otitis in Dogs: An Increasing Opposition

Assessment of listing and categorisation of animal diseases within the framework of the Animal Health Law (Regulation (EU) No 2016/429): antimicrobial‐resistant Pseudomonas aeruginosa in dogs and cats

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