ENT: Hearing Loss, Nosebleeds & Cleft Palate Flashcards
Give 3 causes of congenital hearing loss
1) Maternal rubella or CMV infection during pregnancy
2) Genetic deafness
3) Associated syndromes, for example Down’s syndrome
Give 2 perinatal causes of hearing loss
1) Prematurity
2) Hypoxia during or after birth
Give 4 causes of hearing loss after birth
1) Jaundice
2) Meningitis & encephalitis
3) OM and glue ear
4) Chemotherapy
Screening test for hearing loss in neonates?
The UK newborn hearing screening programme (NHSP) tests hearing in all neonates. T
Children with hearing difficulties may present with parental concerns.
What might these concerns be?
- Ignoring calls or sounds
- Frustration or bad behaviour
- Poor speech and language development
- Poor school performance
What is an audiogram?
Charts that document the volume at which patients can hear different tones.
What is plotted on the x axis of an audiogram?
The frequency in hertz (Hz), from low to high pitched
What is plotted on the y axis of an audiogram?
The volume in decibels (dB), from loud at the bottom to quiet at the top.
Audiogram results in sensorineural hearing loss?
Both air and bone conduction readings will be more than 20 dB, plotted below the 20 dB line on the chart.
This may affect only one side, one side more than the other or both sides equally.
Audiogram results in conductive hearing loss?
Bone conduction readings will be normal (between 0 and 20 dB), however air conduction readings will be greater than 20 dB, plotted below the 20 dB line on the chart.
What happens in conductive hearing loss?
Sound can travel through bones but is not conducted through air due to pathology along the route into the ear.
What is the most common cause of hearing loss in older adults?
Presbycusis
What is Presbycusis?
A gradual, age-related hearing loss that occurs due to changes in the inner ear.
How does presbycusis present?
Difficulty hearing high-pitched sounds and understanding speech in noisy environments.
Where do nosebleeds (epistaxis) originate from?
Kiesselbach’s plexus, which is also known as Little’s area.