During the chart review, patient demographics, date of blast, date of ear examination and of pure tone audiometry (PTA), presence or absence of symptoms, type, duration and intensity of symptoms, otological findings for presence of tympanic membrane perforation
, presence of blood/clot or discharge in external auditory canal and pure tone audiometry findings were collected.
The age of the patients ranged from 16 to 40 years with mean age around 24 years; 39 cases had complete closure of the tympanic membrane perforation
Size of tympanic membrane perforations
operated were small 19%(n-67), medium 55%(n-194) and large 25.
A recent report by a group of military physicians showed a high incidence of tympanic membrane perforation
All the patients diagnosed as tubotympanic type of chronic otitis media with history of discharging ear with central type of tympanic membrane perforation
and conductive type of hearing loss with disease-free normal middle-ear cavity & mastoid with patent eustachian tube were included in the study irrespective of age, sex, religion, caste, literacy, geographic location, socio-economic profile & duration of illness after dry ear was achieved conservatively for minimum 4 weeks.
It is defined as simple surgical repair of a tympanic membrane perforation
without doing ossicular reconstruction.
Patients with tympanic membrane perforation
and pure conductive hearing loss were included in middle ear damage, whereas patients with mixed, pure sensory neural hearing loss and vertigo fell under inner ear damage.
8,10) In otolaryngology, Erkilet et al reported in 2009 that autologous platelet-rich plasma effectively accelerated tympanic membrane perforation
healing in rats.
33%) had medium tympanic membrane perforation
(Group A = 26.
2,3] World health organisation defines chronic suppurative otitis media  as a stage of ear disease in which there is chronic inflammation of middle ear cleft with tympanic membrane perforation
and discharge and qualifies Otorrhoea to be present for two weeks or longer.
Tympanic membrane perforation
primarily results from middle ear infections, trauma and iatrogenic causes.
We retrospectively reviewed the records of 214 patients with a history of middle ear disease who had undergone repair of a tympanic membrane perforation
over an 18-year period.