title: [The analysis of concomitant vertigo in idiopathic sudden deafness].
abstract: OBJECTIVE
  Analyzing different types of concomitant vertigo in sudden deafness (SD) patients with different hearing loss types, exploring different pathogenesis of SD and concomitant vertigo.
  
  
  METHODS
  The clinical data of 121 SD cases during 2007. 12 - 2009. 4 were retrospectively analyzed. Detailed information including age, sex, history and hearing level were recorded. According to the standard of China Medical Association,all patients were classified into five sub-groups based on audiogram types: low frequency SD, high frequency SD, flat frequency SD and total SD. The proportion of vertigo in different SD types were calculated and analyzed by statistical method.
  
  
  RESULTS
  Among all 121 cases, 45 cases with concomitant vertigo, the proportion in different SD types was 42.9%, 47.1%, 23.6% and 51.4%, respectively. By chi-square test, P < 0.05, the proportion in the flat type was statistically lower than that of the other types. 23 patients were diagnosed as true vertigo. The vertigo incidence in different SD types had no statistical difference.
  
  
  CONCLUSIONS
  Vaso factor and viral infection played different roles in different SD types. Discussing concomitant vertigo could help understand SD and otogenic vertigo.
authors.affiliation: Department of Otolaryngology, People's Hospital, Peking University, Beijing 100044, China.
authors.forename: Xin
authors.initials: X
authors.lastname: Ma
authors.forename: Qiang
authors.initials: Q
authors.lastname: Li
authors.forename: Yuanyuan
authors.initials: Y
authors.lastname: Jing
authors.forename: Lisheng
authors.initials: L
authors.lastname: Yu
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D002648:Child; D005260:Female; D003639:Hearing Loss, Sudden / Q000145:classification / Q000150:complications* / Q000209:etiology; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies; D014717:Vertigo / Q000150:complications* / Q000209:etiology; D055815:Young Adult