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    Otitis externa

    Otitis externa is a topic covered in the Guide to Diagnostic Tests.

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    Organism

    Otitis externa

    Acute localized: S. aureus (15%) (GPC), anaerobes (32%), S. pyogenes (GPC in chains), H. influenzae , other gram-positive cocci.

    “Swimmer’s ear”: Pseudomonas sp. (40%) (GNR), fungi (6%) (eg, Aspergillus sp., Candida sp.).

    Chronic: Usually secondary to seborrhea or eczema.

    Diabetes mellitus, AIDS (“malignant otitis externa”): P. aeruginosa (GNR), Aspergillus sp., Candida sp.

    Furuncle of external canal: S. aureus.

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    Citation

    McPhee, Stephen J., et al. "Otitis Externa." Guide to Diagnostic Tests, 7th ed., McGraw-Hill Education, 2017. Anesthesia Central, anesth.unboundmedicine.com/anesthesia/view/GDT/619372/all/Otitis_externa.
    McPhee SJ, Lu CM, Nicoll D. Otitis externa. Guide to Diagnostic Tests. 7th ed. McGraw-Hill Education; 2017. https://anesth.unboundmedicine.com/anesthesia/view/GDT/619372/all/Otitis_externa. Accessed April 24, 2019.
    McPhee, S. J., Lu, C. M., & Nicoll, D. (2017). Otitis externa. In Guide to Diagnostic Tests. Available from https://anesth.unboundmedicine.com/anesthesia/view/GDT/619372/all/Otitis_externa
    McPhee SJ, Lu CM, Nicoll D. Otitis Externa [Internet]. In: Guide to Diagnostic Tests. McGraw-Hill Education; 2017. [cited 2019 April 24]. Available from: https://anesth.unboundmedicine.com/anesthesia/view/GDT/619372/all/Otitis_externa.
    * Article titles in AMA citation format should be in sentence-case
    TY - ELEC T1 - Otitis externa ID - 619372 A1 - McPhee,Stephen J, AU - Lu,Chuanyi Mark, AU - Nicoll,Diana, BT - Guide to Diagnostic Tests UR - https://anesth.unboundmedicine.com/anesthesia/view/GDT/619372/all/Otitis_externa PB - McGraw-Hill Education ET - 7 DB - Anesthesia Central DP - Unbound Medicine ER -