Deafness in Children
What is deafness?
Deafness is a partial or complete loss of hearing, also known as hearing impairment. The normal threshold range is 020 decibels (db), where 0 db is the threshold for the perception of sound at a given frequency for people with normal hearing.
What are hearing loss? the levels of
Hearing loss is measured in decibels. It can be graded as follows: 25-39 db HL: mild, cannot hear ✿ whispers. 40-69 db HL: moderate, cannot ✿ hear conversational speech. 70- 94 db HL: severe, cannot hear shouting. 95 db HL: profound, cannot hear sounds that would be painful for a person with normal hearing. patient age at onset of the hearing loss, the threshold for suspicion of parents and health care providers.
In following situations detailed investigations for hearing loss is needed.
Family history of deafness. ✿ Infection: congenital ( eg, rubella), mumps, meningitis. Ototoxic medications: in utero or postnatal. Low birth weight, prematurity, low birth Apgar scores, prolonged mechanical ventilation. Craniofacial anomalies or any syndrome associated with sensorineural hearing loss. Severe neonatal hyperbilirubinaemia. Head injury. Neurodegenerative disorders. Concern about hearing, speech, language or developmental delay.
Otoacoustic emission can also be done in a new born