Year: 2026
Type: article
Study design: Observational Study
Abstract: Introduction: Acute otitis media (AOM) is a common infection in medical practice. Objective: to identify the resistance profile of pathogenic bacteria isolated from patients with otitis media treated at the General Hospital of Benguela. Materials and Methods: Descriptive, retrospective, cross-sectional and quantitative study, carried out in the microbiology laboratory of the General Hospital of Benguela, with 99 biological ear samples. To identify microorganisms, the depleted streak technique was used, sensitivity was obtained by the disk diffusion method and the results were interpreted according to standardized clinical-laboratory criteria. Results: There was a prevalence of gram-positive microorganisms, particularly in women (62.07%, n=61), with the age group most affected by these microorganisms being 6 to 10 years old (36.59%, n=36). Among the gram-positive microorganisms identified in the samples and their susceptibility to medications, the following stand out: Staphylococcus aureus 70.7% (n=70) and Streptococcus 29.3% (n=29), which showed high sensitivity to Imipenem and Cefatoxime and greater resistance, in the case of Staphylococcus aureus, to Ciprofloxacin, Cefotaxime, Ceftriaxone, Metronidazole and Doxycillin, while Streptococcus demonstrated greater resistance to Gentamicin, Amoxicillin and Cefotaxime. For Gram-negative bacteria, we observed that Pseudomonas aeruginosa presented the highest incidence, 39% (n=38), with greater sensitivity to ceftazidime, imipenem and ciprofloxacin, and resistance to gentamicin, amoxicillin and cefotaxime, while Proteus vulgaris presented 22% (n=21), with greater sensitivity to imipenem, ceftriaxone, ceftazidime and cefotaxime, and resistance to metronidazole, ciprofloxacin and doxycillin. Conclusion: The investigation found a predominance of Gram-positive microorganisms in ear secretion samples. In general, the microorganisms identified were more sensitive to imipenem and more resistant to ciprofloxacin.
Institutions: Agostinho Neto University, Universidade Katyavala Bwila
Language: English
Topic: Ear Surgery and Otitis Media
Subfield: Otorhinolaryngology
Field: Medicine
Domain: Health Sciences
Open Access status: diamond
OpenAlex ID: W7204179702