Hearing evaluation after myringoplasty
Keywords:Myringoplasty, Graft take rate, Hearing improvement
AbstractThis study was carried out to assess the graft take rate as well as hearing improvement after
myringoplasty with temporal fascia graft by underlay technique. Study was done in department
of ENT and Head-Neck Surgery of BSMMU, Dhaka Medical College Hospital and BIRDEM from
July 2006 to June 2007. Sixty (60) patients were included prospectively for this work. In this
study graft take rate was 85% (51 out of 60) and graft failure was 15% (9 out of 60). The age
range of the patients was 10 to 50 years. Highest number of patients was in the age group of 21
to 30 years and graft take was also maximum in this age group. Graft take rate of small size
perforation (100%) and medium size perforation (93.23%) had more than subtotal perforation
(77.77%). Success rate of posterior perforation was maximum (93.75%) followed by anterior
perforation (88.23%). In case of approach of operation postaural approach had maximum success
rate (88.09%) followed by endaural (75%) and transcanal approach (80%). In this study the
mean pre and postoperative air conduction threshold in the successful cases were 34 dB and 24
dB respectively, with a mean audiological improvement of 10 dB. Improvement of mean air bone
gap was 11 dB. Of the successful cases hearing was improved in 31 patients (60.78%) and 20
patients (39.21%) showed no significant hearing improvement. From this study it can be concluded
that myringoplasty is a valid treatment modality for tympanic membrane perforation.
Keywords: Myringoplasty; Graft take rate; Hearing improvement
Bangladesh J Otorhinolaryngol 2010; 16(1): 23-28
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