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  • Title: Rates of tympanic membrane closure in double-tympanocentesis studies.
    Author: Slovik Y, Raiz S, Leiberman A, Puterman M, Dagan R, Leibovitz E.
    Journal: Pediatr Infect Dis J; 2008 Jun; 27(6):490-3. PubMed ID: 18449065.
    Abstract:
    BACKGROUND: Data on the outcome of tympanic membrane (TM) closure after tympanocentesis in acute otitis media (AOM) patients is limited. OBJECTIVES: To analyze the dynamics of TM perforation closure after 1 or 2 tympanocentesis procedures performed at diagnosis and during AOM treatment. PATIENTS AND METHODS: Study population included 113 children enrolled in 4 double-tympanocentesis studies. Only the files of patients whose first and second examination were performed by the same 2 otorhinolaryngologists were analyzed. Middle ear fluid (MEF) was cultured on day 1 and days 4-6, the latter only in initially culture-positive patients. Patients were also examined on days 11-14 and followed until days 22-28. RESULTS: Ninety-three (82%) patients underwent tympanocentesis on days 4-6; 103 (91%) and 95 (84%) were evaluable on days 11-14 and 22-28, respectively. One hundred seventy-three ears underwent tympanocentesis on day 1 and 139 on days 4-6. Ninety-seven (86%) patients had positive MEF cultures. One hundred fifty-three (88%) tympanocentesis procedures performed at enrollment were closed on days 4-6. No differences were recorded in the closure rates as function of patient age, previous AOM history, MEF culture positivity, pathogens isolated at enrollment, and pathogen eradication on days 4-6. The 20 eardrums still open on days 4-6 were closed on days 11-14. Eleven (9%) of the evaluable ears tapped on days 4-6 were not closed on days 11-14 and 9 of 10 were closed on days 22-28. CONCLUSIONS: TM perforation closed in most cases within a few days regardless of patient and disease characteristics, and 2 consecutive tympanocentesis procedures performed at short-time intervals are associated with good TM closure rates.
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