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  • Title: MRSA and non-MRSA otorrhea in children: a comparative study of clinical course.
    Author: Alexander NS, Kulbersh BD, Heath CH, Desmond RA, Caron E, Woolley AL, Hill JS, Shirley WP, Wiatrak BJ.
    Journal: Arch Otolaryngol Head Neck Surg; 2011 Dec; 137(12):1223-7. PubMed ID: 22183901.
    Abstract:
    OBJECTIVE: To test the perception that post-tympanostomy tube otorrhea caused by methicillin-resistant Staphylococcus aureus (MRSA) is a more virulent disease than otorrhea caused by other pathogens by analyzing the clinical differences and disease courses in children diagnosed with otorrhea caused by MRSA bacteria vs non-MRSA bacteria. DESIGN: Retrospective review. SETTING: Tertiary children's hospital. PATIENTS: We retrospectively examined the medical records of children who presented to a tertiary children's hospital from January 1, 2003, to December 31, 2008, with otorrhea that occurred after tympanostomy tube insertion. MAIN OUTCOME MEASURES: Otorrhea culture records were used to group the 1079 patients into those whose otitis media was due to MRSA (n = 170) and those with non-MRSA otitis media (n = 909). From the non-MRSA group, we randomly selected an age-matched group of 170 and examined the differences between the MRSA and age-matched non-MRSA groups in organisms isolated by culture, demographic factors (including type of medical insurance), medical history, treatments, surgical procedures performed, audiometric data, and other admissions for infection-related illnesses. RESULTS: The overall incidence of MRSA in this series was about 16% (170 of 1079 patients). Of the 170 eligible children in each age-matched group, 135 with MRSA otorrhea and 141 with non-MRSA otorrhea had data in every category selected for statistical analysis. The groups did not differ significantly in type of insurance; history of tympanostomy tube placement, cholesteatoma, or prematurity; number or type (minor/major) of surgical procedures performed; or risk of subsequent infection-related diagnoses. More patients in the MRSA group received intravenous antibiotic therapy (11% vs 3.6%; P < .001). CONCLUSION: In this study, a diagnosis of otorrhea due to MRSA did not carry an increased risk for surgical procedures or infection-associated sequelae compared with a diagnosis of non-MRSA otorrhea.
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