Ear_trauma by drtbalu

Ear Trauma by drtbalu untitled

Ear Trauma by drtbalu

Quiz

Perforations due to air pressure changes occur most commonly in
1. Postero inferior quadrant of ear drum
2. Antero inferior quadrant of ear drum
3. Postero superior quadrant of ear drum
4. Antero superior quadrant of ear drum
Which of the following gases can cause perforation of weakened ear drum ?
1. Nitrous oxide
2. Ether
3. Halothane
4. Oxygen used during anestheisa
The main factors causing the failure of traumatic perforation to heal on their own are
1. Damage to the outer epithelial layer of ear drum
2. Tissue loss and infection of the ear drum
3. Loss of inner mucosal layer of the ear drum due to trauma
4. Damage to the external auditory canal
The development of squamous epithelial cysts in the middle ear is seen folloing perforations of ear drum caused by
1. Injury to ear drum due to sharp objects
2. Injury to ear drum caused by welding sparks
3. Injury to ear drum caused by bomb blast
4. Injury to ear drum due to a slap over the cheek
Chances of spontaneous healing of ear drum perforation is reduced in
1. Ear drum perforations caused due to a slap over the cheek
2. Ear drum perforations caused due to sharp objects
3. Water sports injury
4. Ear drum perforations caused due to sudden pressure changes during general anesthesia
Battle's sign is
1. Skin discoloration over mastoid process
2. Reddish bulge seen over the ear drum
3. Blueish bulge seen over the floor of the external auditory canal
4. Linear tear of the ear drum due to injury by a sharp object
Battle's sign is seen in patients with
1. Traumatic perforation of ear drum
2. Fractures of temporal bone
3. Blast injuries of ear drum
4. Injuries of tympanic membrane caused by welding spark
The commonest type of fracture involving the temporal bone is
1. Longitudinal
2. Transverse
3. Mixed
4. Punched out
Blows to the temporal / parietal areas of skull cause
1. Transverse fracture of temporal bone
2. Longitudinal fracture of temporal bone
3. Mixed fracture of temporal bone
4. Circular fracture of temporal bone
Frontal / occipital blows cause
1. Transverse fracture of temporal bone
2. Longitudinal fracture of temporal bone
3. Mixed fracture of temporal bone
4. Circular fracture of temporal bone
Inner ear is commonly involved in
1. Longitudinal fractures of temporal bone
2. Transverse fractures of temporal bone
3. Circular fractures of temporal bone
4. Fractures involving the mastoid cortex
Haemotympanum without bleeding from the ear is commonly seen in
1. Transverse fractures of temporal bone
2. Longitudinal fractures of temporal bone
3. Circular fractures of temporal bone
4. Punched out fractures of temporal bone
Secondary endolymphatic hydrops can occur in
1. Longitudinal fractures of temporal bone
2. Transverse fractures of temporal bone
3. Circular fractures of temporal bone
4. Punched out fractures of temporal bone
Facial nerve injuries are common in
1. Transverse fractures of temporal bone
2. Longitudinal fractures of temporal bone
3. Circular fractures of temporal bone
4. Punched out fractures of temporal bone
Fluctuating deafness in a patient with temporal bone trauma is due to
1. Injury to the middle ear
2. Injury to ear drum
3. Perilymph fistula
4. Injury to internal acoustic meatus
The edges of a traumatic perforation of ear drum is found to be everted due to
1. Presence of adhesions
2. Negative pressure
3. Displaced ossicles
4. Trauma to external auditory canal
In transverse fractures of temporal bone the facial nerve is injured in its
1. Mastoid segment
2. Tympanic segment
3. Labyrinthine segment
4. Intracranial segment
The investigation that could clinch the diagnosis of temporal bone fracture is
1. MRI scan
2. Xray temporal bones
3. High resolution CT scan
4. PET scanning
Haematoma of auricle should be drained to prevent
1. Deformity of pinna
2. Stenosis of external auditory canal
3. Development of conductive deafness
4. Development of sensori neural hearing loss
The commonest cause of conductive deafness in a patient with fracture temporal bone is
1. Haemotympanum
2. Dislocation of malleus
3. Tympanic membrane perforation
4. Perilymph fistula
The commonest ossicular chain abnormality associated with fractures of temporal bone is
1. Incudostapedial joint separation
2. Incudomalleolar joint separation
3. Avulsion of stapes
4. Incus dislocation
CSF otorrhoea following temporal bone fracture
1. Should be treated surgically
2. Is self limiting in most of the cases
3. Should be treated by craniotomy
4. Can lead to fatal meningitis in all patients with temporal bone fractures
Severely tramatized external canal can cause
1. Conductive deafness in excess of 60db
2. Mixed deafness
3. Stenosis
4. Brain herniation
Temporal bone fracture classification was first developed by
1. Ulrich
2. Ghorayeb
3. Yeakley
4. Beatle
Following trauma to external canal caused by fractures of temporal bone
1. The ear must be packed to prevent bleeding
2. The ear must be packed to prevent cst otorrhoea
3. The ear canal should not be packed
4. Continuous suction should be applied to the external canal

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