Identification and antimicrobial susceptibility of acute external otitis microorganisms

Abstract

Acute external otitis is a polymicrobial infection and proper knowledge regarding microorganism etiology and susceptibility will contribute to rational antibiotic usage and treatment success.

Bacteriological Study of Acute Otitis Externa in a Tertiary Care Hospital of a District in North Karnataka, India

“…Al Asaf et al, reported P. aeruginosa (39%) and S. aureus (18%) were the most common isolates (15). Nougueria et al, isolated S. aureus as the most common isolate in their study (16). Thus in most studies P. aeruginosa and S. aureus were reported as common isolates, which is consistent with our result.…”

A study of acute otitis externa at Wellington Hospital, 2007–2011

“…The data is consistent with the findings of several other studies identified in the literature. 2,4,5 Overall, P. aeruginosa was found in 46.5 per cent of patients, while S. aureus was found in 31.9 per cent. They were found concurrently in 8.4 per cent of cases, and again, this proves consistent with information published in the literature.…”

“…They were found concurrently in 8.4 per cent of cases, and again, this proves consistent with information published in the literature. 2 In New Zealand, treatment of otitis externa with antimicrobials usually comprises either Sofradex drops (dexamethasone + framycetin + gramicidin) or Ciproxin HC (ciprofloxacin + hydrocortisone). Other agents used include Kenacomb (gramicidin + nystatin + neomycin), Maxitrol ointment (neomycin + polymixin B + dexamethasone), and Locorten-Vioform (clioquinol + flumethasone).…”

“…1 Many factors contribute to the risk of developing otitis externa, including diabetes, pre-existing dermatitis, bacterial colonisation, exposure to external factors (swimming, trauma), and previous infections. 2 The current goldstandard treatment is topical antibiotics in the form of ear drops, which may also contain topical steroids. Systemic antibiotics are reserved for severe or resistant cases such as patients that are systemically unwell, suffering complications (e.g., abscess, etc.…”

Phenotypic Detection of Β-Lactam Antibiotics, Methicillin and Inducible Clindamycin Resistance Among Bacterial Isolates in Patients with Otitis Externa

“…Otitis is a general terminology for inflammation or infection of the ear; it is one of the widely spread secondary infections among patients (12). Pseudomonas aeruginosa, Escherichia coli, Staphylococcus aureus, Pseudomonas spp., and Proteus mirabilis are the main causes of otitis externa (13,14).…”