title: Hearing evaluation of intratympanic methylprednisolone perfusion for refractory sudden sensorineural hearing loss.
abstract: OBJECTIVE
  To investigate the effectiveness and safety of intratympanic methylprednisolone perfusion (IMP) through a microcatheter in patients with sudden sensorineural hearing loss (SSNHL) who failed a conventional treatment.
  
  
  METHODS
  Prospective clinical study.
  
  
  METHODS
  This study was conducted in Nanjing Drum Tower Hospital, Nanjing University Medical School.
  
  
  METHODS
  Patients who had failed a minimum 10-day conventional treatment were included. Twenty-six patients in the study group (SG) received methylprednisolone perfusion through a microcatheter placed into the tympanum once a day for 10 days and the conventional treatment. Twenty-three patients who received a second conventional treatment (no steroid) served as the comparison group (CG). All patients were followed up for three months after the end of treatment.
  
  
  RESULTS
  The effective rates for SG and CG were 50 percent (61.9% when only patients with an interval from onset to IMP < or = 60 days were included) and 21.7 percent, respectively (chi(2) = 4.194, P = 0.041). The pure-tone average improvement was 20.2 +/- 15.6 dB in SG, and 9.2 +/- 13.7 dB in CG (z = 2.51, P = 0.011). In SG, hearing improvement at low frequencies was better than that at high frequencies. The interval from onset to IMP affected the efficacy of IMP.
  
  
  CONCLUSIONS
  IMP through a microcatheter is a promising treatment for refractory SSNHL. The data suggest that the treatment may be more effective when administered at the earlier stages of SSNHL when the conventional treatment has failed.
authors.affiliation: Department of Otolaryngology-Head and Neck Surgery, Nanjing Drum Tower Hospital, Nanjing University Medical School, 321 Zhongshan Road, Nanjing 210008, China. shewandong@163.com
authors.forename: Wandong
authors.initials: W
authors.lastname: She
authors.forename: Yanhong
authors.initials: Y
authors.lastname: Dai
authors.forename: Xiaoping
authors.initials: X
authors.lastname: Du
authors.forename: Chenjie
authors.initials: C
authors.lastname: Yu
authors.forename: Feng
authors.initials: F
authors.lastname: Chen
authors.forename: Junguo
authors.initials: J
authors.lastname: Wang
authors.forename: Xiaoming
authors.initials: X
authors.lastname: Qin
mesh_terms: D000328:Adult; D000368:Aged; D001301:Audiometry, Pure-Tone; D016022:Case-Control Studies; D005260:Female; D005500:Follow-Up Studies; D005938:Glucocorticoids / Q000008:administration & dosage / Q000627:therapeutic use*; D006319:Hearing Loss, Sensorineural / Q000175:diagnosis / Q000188:drug therapy*; D003639:Hearing Loss, Sudden / Q000175:diagnosis / Q000188:drug therapy*; D006801:Humans; D036502:Infusions, Intralesional / Q000295:instrumentation / Q000379:methods; D008297:Male; D008775:Methylprednisolone / Q000008:administration & dosage / Q000627:therapeutic use*; D008875:Middle Aged; D011446:Prospective Studies; D020127:Recovery of Function; D018570:Risk Assessment; D012720:Severity of Illness Index; D016896:Treatment Outcome; D014432:Tympanic Membrane
chemical_list: D005938:Glucocorticoids; D008775:Methylprednisolone