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Profound unilateral hearing loss or single-sided deafness, SSD, makes hearing comprehension very difficult. With speech and background noise presented at the same level, persons with unilateral deafness were found to listen only about 30–35% of the conversation. [6] A person with SSD needs to make more effort when communicating with others. [7]
Other causes of congenital hearing loss that are not hereditary in nature include prenatal infections, illnesses, toxins consumed by the mother during pregnancy or other conditions occurring at the time of birth or shortly thereafter. These conditions typically cause sensorineural hearing loss ranging from mild to profound in degree. [3]
People with unilateral hearing loss or single-sided deafness ... At birth ~3 per 1000 in developed countries and more than 6 per 1000 in developing countries have ...
CROS hearing aids - for single-sided deafness (SSD) or asymmetric hearing loss. Cochlear implants - when hearing aids no longer provide enough benefit. Bone-anchored hearing aids - for conductive ...
In quiet conditions, speech discrimination is approximately the same for normal hearing and those with unilateral deafness; however, in noisy environments speech discrimination varies individually and ranges from mild to severe. One reason for the hearing problems these patients often experience is due to the head shadow effect.
The etiology of microtia in children remains uncertain but there are some cases that associate the cause of microtia with genetic defects in multiple or single genes, altitude, and gestational diabetes. [3] Risk factors gathered from studies include infants born underweight, male sex, women gravidity and parity, and medication use while pregnant.
Prelingual hearing loss can be considered congenital, present at birth, or acquired, occurring after birth before the age of one. Congenital hearing loss can be a result of maternal factors (rubella, cytomegalovirus, or herpes simplex virus, syphilis, diabetes), infections, toxicity (pharmaceutical drugs, alcohol, other drugs), asphyxia, trauma, low birth weight, prematurity, jaundice, and ...
Apart from those states during that time, deafness has not disqualified people from becoming licensed drivers. That hasn’t been the case for commercial vehicle drivers, though. Up until 2006, a ...
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