Bacterial change in external auditory canal upon antisepsis with povidone-iodine during tympanoplasty

European Archives of Oto-rhino-laryngology : Official Journal of the European Federation of Oto-Rhino-Laryngological Societies (EUFOS) : Affiliated with the German Society for Oto-Rhino-Laryngology - Head and Neck Surgery
Ilker Burak ArslanIbrahim Cukurova

Abstract

The aim of this single-arm prospective study was to determine the flora of the external auditory canal (EAC) in inactive chronic otitis media and evaluate the alteration of microorganisms of the EAC during tympanoplasty upon povidone-iodine antisepsis. Sixty-three patients with central tympanic membrane perforation were enrolled in the study. Preoperative swab cultures were obtained and the EAC was packed with povidone-iodine absorbed gauze. Type I tympanoplasty via a retroauricular route was performed. Cultures from the EAC were taken at the end of each operation. Isolated organisms were identified based upon microbiological, morphological, and biochemical characteristics. The most commonly isolated organisms from preoperative samples were normal commensal flora, including 73 coagulase-negative staphylococci (CNS) and 18 diphtheroid bacilli (DB). Less commonly cultured pathogenic species included four isolates of Staphylococcus aureus and three isolates of Candida albicans. No bacteria were observed in five patients. Following povidone-iodine antisepsis, 32 of the samples were negative. Eradication was statistically significant for CNS, DB and pathogen microorganism (P < 0.05). Isolated bacteria differed from those in preopera...Continue Reading

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Citations

Apr 12, 2017·The Laryngoscope·Shujiro B MinamiKimitaka Kaga
Sep 18, 2021·Acta otorhinolaryngologica Italica : organo ufficiale della Società italiana di otorinolaringologia e chirurgia cervico-facciale·Behrouz BaratiGhazal Norouzi

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