Conductive deafness

Question 1

Definition

Answer 1

Problems with outer and middle ear that inhibit air conduction to inner ear

Question 2

Causes

Answer 2

COMMON

• Wax
• Acute otitis media
• Middle ear effusions
• Otosclerosis

LESS COMMON

• Trauma to middle ear
• Tumours

Question 3

What is otosclerosis?

Answer 3

• Autosomal dominant condition
• Extra bone lay down around stapes causing fixation
• F>M
• Treated with hearing aids or stapectomy

Question 4

Tuning Fork Investigations

Answer 4

RINNES

• Sound heard louder behind ear on mastoid then through air
• Lateralises to side WITH conductive hearing loss

Question 5

MANAGEMENT

Answer 5

CONSERVATIVE

• Foreign body removal
• Hearing aids

SURGICAL

• Grommets for otitis media w/ effusion
• Myringoplasty for perforated TM
• Bone anchored hearing aids