Trauma Flashcards

1
Q

What structures make up the external ear?

A

Pinna/auricle and external auditory canal

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2
Q

What is the pinna and what is it also known as?

A

The visible part of the ear made up of folds of cartilage with a fatty lobule.

Also known as the auricle.

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3
Q

What manoeuvre do you need to do in order to clearly see the tympanic membrane?

A

Pull the ear posteriorly and superiorly.

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4
Q

What membranes line the inner ear?

A

Mucous membranes

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5
Q

What is the function of the inner ear?

A

To amplify and transmit sound to energy

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6
Q

What is the normal appearance of the tympanic membrane?

A

Pink/grey colour

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7
Q

What are the ossicles?

A

The three bones of the middle ear:

  • Malleus
  • Incus
  • Stapes
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8
Q

What are the two muscles in the middle ear?

A

1) Tensor tympani

2) Stapedius

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9
Q

What cranial nerve lies in the middle ear?

A

VII Facial Nerve

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10
Q

The inner ear is located in the _______ part of the temporal bone and contains the _______, the ____-_______ ______, the ______ and the ______.

A
  • Petrous
  • Cochlear
  • Semi-circular canals
  • Saccule
  • Utricle
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11
Q

What is the role of the inner ear?

A

Detects movement.

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12
Q

What is the auricle surrounded by and what does it contain?

A

The perichondral layer that contains the blood vessels that supply the cartilage.

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13
Q

What can a pinna haematoma lead to?

A

Separation of the perichondrium from the cartilage causing stasis of blood and avascular necrosis

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14
Q

What is the management of a pinna haematoma?

A
  • Drainage of the haematoma as much as possible
  • Give abx
  • Large bulky ear dressing
  • Refer to ENT for follow-up
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15
Q

What happens to the ear when a pinna haematoma isn’t treated properly?

A

Cauliflower ear

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16
Q

What anaesthesia do you use for trauma to the auricle?

A

Posterior auricular block

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17
Q

What is the difference between pinna cellulitis and pinna perichondritis?

A

Cellulitis affects the entire ear whereas in perichondritis you get sparing of the earlobe as it doesn’t contain any cartilage.

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18
Q

What is the treatment for pinna cellulitis and pinna perichondritis?

A

IV (important that it is IV) abx

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19
Q

What bacteria are usually the cause of pinna cellulitis, pinna perichondritis and otitis externa?

A
  • Staph aureus

- Pseudomonas

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20
Q

What is polychondritis? (In reference to the ear)

A

A systemic inflammatory condition which tends to be bilateral perichondritis and is also milder and has nasal involvement

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21
Q

What is otitis externa?

A

Infection and inflammation of the external auditory canal caused by bacteria and fungi.

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22
Q

What are the risk factors for otitis externa?

A
  • Swimming
  • Underlying skin conditions
  • Diabetes
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23
Q

What is the presentation of otitis externa?

A
  • Ear pain
  • Thick yellow discharge
  • Conductive hearing loss
  • Tinnitus and/or vertigo
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24
Q

What is the worry with otitis externa?

A

That it progresses to necrotising/malignant otitis externa

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25
Q

What can happen when you get granulation of tissue in otitis externa?

A

This can lead to osteomyelitis of the temporal bone which can lead to meningitis and encephalitis

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26
Q

Under what circumstances should you consider a CT scan in a patient with otitis externa?

A
  • Diabetic
  • Recurrent infections
  • Over 65
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27
Q

What is the treatment for otitis externa?

A

Steroid drops with abx

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28
Q

What should you do if a patient has a bug in their ear canal?

A
  • Kill the bug with mineral oil or lidocaine
  • Attempt to remove
  • If unable to remove refer to ENT as an emergency
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29
Q

Even though most tympanic membrane perforations heal by themselves, why do patients need a follow-up in an ENT clinic?

A

To get their hearing tested

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30
Q

Under what circumstances do tympanic membrane perforations occur?

A
  • Middle ear pressure secondary to fluid build-up as a result of infection
  • Trauma
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31
Q

Why should you avoid gentamycin drops when treating a tympanic membrane perforation?

A

It can be toxic to the middle and inner ear.

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32
Q

What are the commonest pathogens causing otitis media?

A
  • Strep pneumoniae

- Haemophilus influenzae

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33
Q

What is a common presentation of otitis media?

A

Children 3-6 years old following a recent upper respiratory tract infection suffering from:

  • Earache
  • Hearing loss
  • Fever
  • Deafness
  • Irritability
  • Lethargy
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34
Q

What are you likely to see when examining the ear in a suspected otitis media?

A

An inflamed and bulging tympanic membrane with loss of light reflex

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35
Q

What are the complications of otitis media?

A
  • Drum perforation

- Secondary acute mastoiditis

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36
Q

What do most doctors tend to do when treating otitis media?

A

Give a delayed prescription of abx if there has been no improvement in 72 hours

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37
Q

What causes acute mastoiditis?

A

A build-up of purulent exudate within the middle ear blocking the entrance to the mastoid antrum. The pus moves into the air cells of the mastoid process leading to infection.

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38
Q

What is the presentation of acute mastoiditis?

A

Red hot lump over the mastoid process behind the ear with forward displacement of the pinna

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39
Q

What are the three causes of peripheral vertigo?

A

1) BPPV (benign paroxysmal positional vertigo)
2) Labyrinthitis/Vestibular neuritis
3) Meniere’s disease

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40
Q

What is BPPV?

A

Benign Paroxysmal Position Vertigo is a peripheral vertigo characterised by shot, sudden onset of vertigo associated with head movements.

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41
Q

What causes BPPV?

A

A small crystal of calcium carbonate (called an otoconia) enters the semi-circular canals of the inner ear creating an illusion of movement/exacerbating the perception of movement by irritating the hair cells that line the inner ear.

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42
Q

What are the two manoeuvres you use in suspected BPPV?

A

1) Hallpike test to confirm

2) Epley’s manoeuvre to remove the otoconia

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43
Q

What is labyrinthitis/vestibular neuritis and what does it present with?

A

A type of peripheral vertigo that presents as constant vertigo over hours or days. It presents with nausea and vomiting following a viral infection

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44
Q

What is Menirere’s disease?

A

A type of peripheral vertigo characterised by gradual, short episodes of vertigo associated with hearting loss, pressure sensation in the ear and tinnitus.

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45
Q

What is Kiesselbach’s plexus?

A

A vascular network of five arteries that supply the nasal septum.

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46
Q

What does Kiesselbach’s plexus lie in?

A

Little’s/Kiesselbach’s area

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47
Q

At what point in the nose do branches of the internal and external carotid arteries anastamose?

A

Little’s/Kiesselbach’s area

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48
Q

What is the anterior bloody supply to the nose?

A

Branches of the internal carotid

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49
Q

What is the posterior blood supply to the nose?

A

Distal branches of the external carotid

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50
Q

Where do 90% of anterior epitaxies occur from?

A

Little’s/Kiesselbach’s area

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51
Q

What is Trotter’s method?

A

A way to stop nose bleeds:

  • Patient sits up
  • Pinch soft part of the nose for 5-10 minutes
  • Head bent forward
  • Mouth open
52
Q

Why should you get a patient who has a nose bleed to spit out any blood?

A

Because swallowing the blood will cause them to vomit making the situation more distressing

53
Q

What can posterior epistaxis sometimes present as?

A

Blood coming out of both nostrils

54
Q

What is the management for an epistaxis if the Trotter’s method is unsuccessful?

A
  • Look into the nose to identify the bleed
  • Evacuate any clots
  • Spray with topical vasoconstrictor
  • Cauterise
55
Q

Why should you avoid multiple attempts at cauterisation?

A

You can perforate the septum

56
Q

If cauterisation of epistaxis fails what do you do?

A

Tamponade the bleeding using a ‘rapid rhino’ i.e. packing

57
Q

How long do you need to keep a rapid rhino pack inserted? What should you do if it stays longer than this?

A

24h

If longer start on abx

58
Q

What do consultants sometimes do for severe posterior bleeds when a rapid rhino hasnt worked?

A

Place a urinary foley catheter through both nostrils, inflate the balloons and pull back to create a posterior tamponade.

59
Q

What are the complications of epistaxis?

A
  • Severe haemorrhage
  • Hypoxia, hypercarbia (i.e. respiratory failure)
  • Sinusitis
  • Otitis media
  • Necrosis of the columella or nasal ala
60
Q

What are the columella and nasal ala?

A

Columella = inferior margin of the nasal septum

Nasal ala = lateral aspects of the nostrils

61
Q

What is 7th nerve palsy also known as?

A

Bell’s palsy

62
Q

What is the cause of most cases of 7th nerve palsy?

A

Idiopathic linked to HSV

63
Q

Why do you need to determine between upper and motor neuron causes of 7th nerve palsy symptoms?

A

Upper neuron causes tend to be stroke and are forehead sparing (but this can be quite subtle)

64
Q

What is the House-Brackmann scale?

A

A scale used to measure and track the degree of facial nerve palsy. Beyond grade IV you need to include opthalmology.

65
Q

What are the signs and symptoms of sinusitis?

A
  • Headache
  • Facial pain where sinuses are
  • Purulent yellow/green rhinorrhoea
  • Fever
66
Q

What circumstance in sinusitis suggest a superimposed bacterial infection?

A

An upper viral respiratory tract infection followed by sinusitis

67
Q

What are the causes of acute bacterial sinusitis?

A
  • Gram positive bacteria

- Haemophilus influenzae

68
Q

What are the causes of chronic bacterial sinusitis?

A
  • Anaerobes

- Gram negative bactiera

69
Q

What is the treatment for sinusitis?

A
  • Co-amoxiclav
  • Decongestants
  • Analgesia
  • Heat
70
Q

What are the complications of sinusitis?

A
  • Ethmoid sinusitis
  • Orbital cellulitis and abscess
  • Frontal sinusitis
71
Q

What is the worry when sinusitis progresses to frontal sinusitis?

A

This may erode the bone causing Potts puffy tumour and/or a brain abscess

72
Q

When do you do a CT in a patient with sinusitis?

A

When you suspect the infection has spread to the facial or skull bones

73
Q

What is the most common cause of facial cellulitis?

A
  • Group A streptococcus

- Staphylococcus

74
Q

Why is there a much lower threshold for admission and prescription of IV abx in facial cellulitis?

A

Because of the sensitive and essential structures around the face that the infection can spread to

75
Q

What is the most common cause of parotiditis?

A

Paramyxovirus

76
Q

Parotiditis can be secondary to _______________________________.

A

Stones in the salivary gland (sialolithiasis)

77
Q

What are the causes of pharyngitis?

A
  • Irritants (reflux, trauma, inhalation of gases)
  • Viruses (EBV, adenovirus)
  • Bacterial (GABHS, mycoplasma, gonorrhoea, diphtheria)
78
Q

What is GABHS?

A

Group A beta haemolytic strep

79
Q

What is the presentation of tonsilitits?

A
  • Sore throat
  • Difficulty swallowing
  • Fever
  • Swollen tonsils ± purulent exudates
80
Q

What is the treatment of acute tonsilitits?

A

IV:

  • Paracetamol
  • Dexamethasone
  • Fluids
  • ABx
81
Q

Why do you need to do a mono-spot test in a patient with tonsilitis?

A

To look for EBV infective mononucleosis

82
Q

What discharge advice do you need to give a patient with tonsillitis caused by EBV infective mononucleosis?

A

They can get splenomegaly so need to avoid contact sports for 8 weeks to avoid rupture

83
Q

What is a quinsy?

A

Peritonsillar abscess - a complication of tonsillitis

84
Q

What can an inferior quinsy cause?

A

Medial displacement of the tonsil and uvula

85
Q

What are the symptoms of a quinsy?

A
  • Dysphagia
  • Ear pain
  • Muffled voice
  • Fever
  • Trismus (unable to fully open the mouth)
  • Stertor (snoring sound from pharyngeal obstruction)
86
Q

What is the treatment of a quinsy?

A

Treat as tonsillitis and drain the abscess

87
Q

Why must the drainage of a quinsy be done by an experienced doctor?

A

Because the carotid artery is close by

88
Q

What is a centor score?

A

A score to determine if a patient with various respiratory tract infections needs abx. A score of ≥3 needs abx.

89
Q

What does a cough suggest in ENT medicine?

A

A viral upper respiratory tract

90
Q

What are the signs of epiglottitis?

A
  • Rapid onset
  • Patients prefer to sit
  • Muffled voice
  • Dysphagia
  • Drooling
  • Restlessness
    The body is attempting to keep the airway clear
91
Q

What does it indicate if a patient doesn’t want you to look in their throat when you suspect epiglottitis?

A

That the movement required to look will block their throat so don’t attempt to look

92
Q

What should you do when you come across a patient with epiglottitis?

A

Take them straight to resus as an airway emergency

93
Q

What is the treatment for epiglottitis?

A
  • IV abx
  • Steroids?
  • Adrenaline nebs to help manage airway
94
Q

What do you see on an x-ray of the neck in epiglottitis?

A
  • Thumb print sign

- Vallecula sign

95
Q

What is the anatomical location of a retropharyngeal abscess?

A

Anterior to prevertebral space and posterior to the pharynx

96
Q

In what age group do you usually see retropharyngeal abscesses?

A

Children under 4 as they have more lymphoid tissue in that space

97
Q

What are the symptoms of a retropharyngeal abscess?

A
  • Neck pain
  • Dysphagia
  • Dyspnoea
  • Neck stiffness
  • Fever
98
Q

What is the management and treatment of a retropharyngeal abscess?

A

Similar to epiglottitis

99
Q

What is Ludwig’s angina?

A

Rapidly progressive cellulitis of the floor of the mouth

100
Q

What are the symptoms of Ludwig’s angina?

A
  • Raised tongue
  • Dysphagia
  • Pain
  • Fever
  • Swelling of the mouth
101
Q

What is angioedema?

A

Swelling of the deep dermal submucosal and subcutaneous tissues caused by vascular leakage affecting the eyes, lips, tongue, larynx and GI tract

102
Q

What are the causes of angioedema?

A
  • Infection
  • Hypersensitivity reaction
  • ACE inhibitors
103
Q

What is the treatment for angioedema?

A
  • Antihistamines
  • Steroids
  • Adrenaline
104
Q

What is a FNE scope and when is it used?

A

Flexible nasendoscopy

When you can’t remove foreign bodies in the throat e.g. a bone

105
Q

What can help a patient pass a foreign body stuck in the throat?

A
  • Fizzy drinks

- IV buscopan

106
Q

What sex are more likely to suffer a spinal injury?

A

Males (>2:1)

107
Q

What is the most common form of spinal injury?

A

Cervical spine injuries

108
Q

10% of patients with a cervical spine fractures have a second, ___-__________ vertebral column fracture.

A

Non-contiguous (does not share a common border)

109
Q

What is the main problem with spinal injuries?

A

Not the fracture themselves but if the fractures have impinged on the spinal cord

110
Q

What sign on an x-ray suggests a spinal compression injury?

A

If the above vertebra is wider than the one below it.

111
Q

What is the consequence of an injury to the corticospinal tract?

A

Ipsilateral loss of motor function.

112
Q

What is the consequence of an injury to the spinothalamic tract?

A

Contralateral loss of pain and temperature

113
Q

What is the consequence of an injury to the dorsal columns?

A

Ipsilateral loss of vibration and proprioception

114
Q

What is a primary spinal cord injury?

A

Where there is nothing you can do to save the injury. This is unavoidable.

115
Q

What are the features of primary spinal cord injuries?

A
  • Injury has an immediate effect
  • Often caused by compression, contusion, shear injury
  • Spinal cord often appears normal immediately after injury (unless penetrating trauma)
116
Q

What is a secondary spinal cord injury?

A

Where you can minimise the negative effects of the injury i.e. preventable.

117
Q

What are the features of secondary spinal injuries?

A
  • Occurs over minutes, hours
  • Ischaemia, hypoxia and inflammation is seen
  • Progressive neurological deterioration
118
Q

What can happen in a secondary spinal cord injury if you don’t stabilise the spine properly?

A

Subsequent damage following initial injury

119
Q

What is the initial assessment in a suspected spinal injury?

A

ABCDE approach:

  • Airway with cervical protection
  • Breathing
  • Circulation
  • Disability (neurology - GCS)
  • Exposure
120
Q

Under what circumstances should you do a full in-line spinal immobilisation?

A
  • Spinal pain
  • Intoxication
  • Significant distracting injuries
  • Confused/uncooperative
  • Reduced GCS
  • Hand/foot weakness
  • Altered/absent sensation in hands/feet
  • Priapism
  • History of past spinal problems
  • High-risk for cervical spine injury
  • If patient is unable to actively rotate their neck
  • If it was not known how the patient fell/ended up on the floor
121
Q

What is priapism?

A

Prolonged erection of the penis or erection not caused by sexual arousal. It is the hallmark for irreversible spinal cord injury.

122
Q

What is a flexion injury of the spine?

A

They occur following a fall in the bent position or an object falling on the bent back.

123
Q

What is a common cause of a hyperextension spinal injury?

A

Whiplash

124
Q

What is a distraction spinal injury?

A

They occur due to distractive forces causing disruption of the posterior and middle spinal columns e.g. hanging

125
Q

What are the two steps in in-line spinal immobilisation?

A

1) Cervical collar

2) Log roll to keep the head, neck and pelvis in line