A Study of Congenital and Early Acquired Impairment of Hearing
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Date
2002-07
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Abstract
The present study included 261 patients (M:F=I.72: I) suffering from congenital and early acquired
hearing loss. The aetiological breakup of the hearing loss was: genetic factors 47.5%. non-genetic
factors 16.8%, congenital ear malfonnations 8.5% and cryptogenic factors in 27.2% cases. Autosomal
recessive mode of inheritance was seen most commonly (62%) followed by autosomal dominant
(20%) in the genetic group of hearing loss. Maternal Rubella was most common cause of prenatal
group of hearing loss while perinataly birth anoxia and prematurity were common. Postnataly
meningitis was most common aetiology ofhearing loss. Linkage analysis on SLINK 2 point autosomal
data yielded LOD score of more than 3 in an autosomal dominant family.
Description
Keywords
Congenital, Genetic, Non-genetic, Hearing loss
Citation
Kalsotra Parmod, Kumar S, Gosh P, Mishra N K, Verma I C. A Study of Congenital and Early Acquired Impairment of Hearing. JK Science Journal of Medical Education and Research. 2002 Jul-Sept.4 (3): 138-143