title: Hearing loss in patients undergoing coronary artery bypass grafting with or without extracorporeal circulation.
abstract: BACKGROUND
  Our aim was to investigate the differences in postoperative hearing thresholds in patients undergoing coronary artery bypass grafting with (Group I, n=20) or without (Group II, n=17) extracorporeal circulation.
  
  
  METHODS
  37 patients undergoing coronary artery bypass grafting with or without extracorporeal circulation were prospectively evaluated in terms of hearing threshold changes with the intention of documenting hearing losses postoperatively. The t-test for two independent variables was used for statistical analysis.
  
  
  RESULTS
  Hearing threshold changes were detected in 9 Group I patients (45%) and 3 Group II patients (17.65%). The difference between the two groups was statistically significant (p=0.0426).
  
  
  CONCLUSIONS
  Postoperative hearing threshold changes, not necessarily revealed by clinical examinations, are encountered after coronary artery bypass grafting operations. Extracorporeal circulation usage seems to bring an additional risk in terms of hearing loss.
authors.affiliation: Department of Cardiovascular Surgery, Mersin University School of Medicine, Mersin, Turkey.
authors.forename: Barlas N
authors.initials: BN
authors.lastname: Aytacoglu
authors.forename: Cengiz
authors.initials: C
authors.lastname: Ozcan
authors.forename: Nehir
authors.initials: N
authors.lastname: Sucu
authors.forename: Kemal
authors.initials: K
authors.lastname: Gorur
authors.forename: Oben
authors.initials: O
authors.lastname: Doven
authors.forename: Handan
authors.initials: H
authors.lastname: Camdeviren
authors.forename: Necmi
authors.initials: N
authors.lastname: Köse
authors.forename: Murat
authors.initials: M
authors.lastname: Dikmengil
mesh_terms: D001300:Audiometry, Evoked Response; D001309:Auditory Threshold; D001026:Coronary Artery Bypass; D005112:Extracorporeal Circulation; D005260:Female; D034381:Hearing Loss / Q000175:diagnosis*; D006801:Humans; D008297:Male; D011183:Postoperative Complications / Q000175:diagnosis*