Eight strains of Pseudomonas putrefaciens have been received from among 466 strains of Pseudomonas submitted to the Computer Trials Laboratory for identification over the last eight years. Two of the strains of P. putrefaciens from patients with otitis media and otitis externa respectively appear to have played a pathogenic role. The biochemical characteristics of these eight strains were compa...

The aims of the study were to determine the prevalence of bacterial/yeast otitis externa in dogs and to analyse antimicrobial susceptibility. Among 257 swab ear samples from Bulgarian dogs with otitis externa, bacteria and yeast species were isolated in 93.77% of cases as mono-infections (109 cases) involving mainly coagulase positive staphylococci (60 strains), Malassezia pachidermatis (97 str...

UNLABELLED Acute Otitis Externa is an inflammation of the outer auditory meatus, and according to popular saying, medicinal plant extracts can be used in its treatment. AIM to assess the in vitro antimicrobial activity of the following plants: Aleolanthus suaveolens; Caryophyllus aromaticus; Cymbopogon citratus; Matricaria chamomila; Pithecellobium avaremotemo; Plectranthus amboinicus and Rut...

QUESTION In the summer months I see many children with uncomplicated acute otitis externa (AOE). I am aware of the multiple ototopical preparations. Which is the best first-line agent to treat AOE, and is there a role for an oral antibiotic? ANSWER There are no specific Canadian guidelines for the management of AOE. However, current American guidelines promote initial ototopical therapy witho...

Otitis is one the most common problems seen in dogs. Most acute cases can be managed with topical polyvalent ear preparations. However, these cases frequently evolve into chronic or recurrent otitis that is much harder to resolve. Ongoing cycles of infection and inflammation will lead to chronic pathological changes and select for antimicrobial resistance that make management much more challeng...

Malignant otitis externa is a devastating disease that poses a diagnostic and therapeutic challenge. The objective of our study was to demonstrate the importance of detailed clinical analysis and to provide an update on the current diagnostic and therapeutic tools available.

Introduction Otitis is a frequent problem in dogs – in many cases we deal with a recurrent problem. Looking at the etiology we have to take into account bacterial infections, yeasts (Malassezia spp.), parasites (Otodectes cynotis as well as Demodex species) and foreign bodies. Less often we deal with neoplasia, allergies (especially food intolerance), autoimmune diseases or endocrinopathies tha...

BACKGROUND Bacterial intercellular communication, called quorum sensing, takes place via the production and collective response to signal molecules. In Gram-negative bacteria, like Pseudomonas aeruginosa, these signaling molecules are N-acylhomoserine lactones (AHLs). P. aeruginosa is a common cause of inflammation of the ear canal (otitis externa) in dogs. It employs quorum sensing to coordina...

Otitis externa is most commonly caused by infection (usually bacterial, although occasionally fungal), but it may also be associated with a variety of noninfectious systemic or local dermatologic processes. The most characteristic symptom is discomfort that is limited to the external auditory canal, while the most characteristic signs are erythema and swelling of the canal with variable dischar...