Face And Neck Flashcards

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1
Q

What is the defining feature of a Le Fort fracture

A

Fracture through the pterygoid plates leading to pterygomaxillary separation

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2
Q

Where does Le Fort type 1 extend

A

Lateral margin of nasal opening
Maxillary sinus
Upper alveolar ridge

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3
Q

How does Le Fort type 1 present

A

Ecchymosis over greater palatine vessels
Teeth mobility
Cracked pot sound on percussing upper teeth
Airway obstruction

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4
Q

Why do you get airway obstruction in Le Fort type 1

A

Medial pterygoid muscles pull the jaw back and down

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5
Q

Describe the fracture of Le Fort type 2

A

Lacrimal bones
Inferior orbital floor and rim
Maxillary sinus

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6
Q

How would a Le Fort type 2 present

A
Step deforming at infra-orbital margin
Mobile midface
Cheek parasthesia (infraorbital nerve)
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7
Q

Describe the fracture of Le Fort type 3

A

Nasal bone
Frontal process of maxilla
Medial, floor and lateral wall of orbit
Zygomatic arch

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8
Q

How does a Le Fort type 3 present

A

Profuse CSF rhinorrhoea (ethmoid air cells very thin)
Lengthened face
Enophthalmus
Temporalis muscle impingement

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9
Q

What are some signs common to all types of Le Fort

A
Epistaxis
Gross oedema 
Circumorbital ecchymosis 
Diplopia 
Subconjunctival haemorrhage
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10
Q

What is the source of bleeding in Le Fort type 2 and 3

A

Maxillary

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11
Q

What is the prehospital management of facial fractures

A
Airway intubation 
Insert epistats
Dental bite blocks
Collar
Inflate epistats
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12
Q

What do the posterior and anterior balloons of the epistats compress

A

Posterior - sphenopalatine

Anterior - Keisselbachs

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13
Q

Why is a wound to the external jugular vein help open and what are the consequences

A

Tightly adhered to thick fascia

Means air can enter

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14
Q

Fractures through the sphenoid sinuses can cause what

A

Torrential epistaxis from the ICA draining through the sinus then nasal cavity
Monocular blindness due to optic nerve ischaemia (ophthalmic artery is first branch of ICA)

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15
Q

What nerve is damaged and hence what is the consequence of a zygomatic arch fracture

A

Infraorbital nerve

Impaired sensation to cheek, nasal vestibule and upper lip

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16
Q

Where is a blow out fracture most common and what muscles prolapse where

A

Inferior wall - inferior rectus prolapse into maxillary sinus
Medial wall - medial rectus prolapse into ethmoid air cells

17
Q

What is the defining feature of a blow out fracture

A

Fractured wall but with intact orbital rim

18
Q

How would a blow out fracture present

A

Diplopia due to extraocular muscle involvement
Emphysema due to communication with sinus
Malar numbness due to infraorbital nerve involvement

19
Q

Describe the pathophysiology of a retrobulbar haematoma

A

Bleeding from the ophthalmic artery or vein leads to RIOP, ischaemic of the optic nerve and sight loss

20
Q

How does a retrobulbar haematoma present

A

Severe pain
Proptosis
Ophthalmoplegia

21
Q

How is a retrobulbar haematoma managed

A

Clinical diagnosis so immediate lateral canthotomy and drainage of the retrobulbar space

22
Q

What are the borders used to define penetrating neck trauma

A

3 - base of skull to angle of mandible
2 - angle of mandible to cricoid cartilage
1 - cricoid cartilage to clavicle

23
Q

What may be injured in zone 3,2, and 1 neck traumas

A

3 - vertebral artery, internal/external carotid
2 - larynx, common carotid, IJV
1 - lung apex, brachial plexus, common carotid, IJV, EJV, sympathetic chain

24
Q

What is the stepwise management of penetrating neck trauma

A

External compression —> Foley catheter balloon tamponade —> immediate surgical exploration

25
Q

What investigations are required following neck trauma

A

CTA (possibility of carotid artery dissection)

CT to include the chest (possibility of pneumothorax)

26
Q

How does Horners syndrome present?

A

Miosis
Partial ptosis
Anhidrosis

27
Q

When would you not get anhidrosis in Horners syndrome

A

Post-ganglionic as sympathetics to face sweat glands have already come off
ICE aneurysm or dissection
Cavernous sinus pathologies

28
Q

What could indicate a difficult airway

A

Obesity
Neck stiffness
Malampati (type 4 being the worst)
332 rule

29
Q

What are the indications or RSI

A
Compromised airway
Ventilatory failure
Unconscious 
Humanitarian reasons 
Severe agitation
30
Q

What is the procedure for RSI

A
Preparation 
Pre-oxygenation (100% for 3 minutes)
Fentanyl - pretreatment 
Ketamine - induction agent
Rocuronium - paralytic
Apply cricoid pressure
Place the ET tube directly between the cords
Confirm its placement with ETCO2
31
Q

What are the 30 second drills following failed intubation

A

Adjust position of patient and you
Suction
Backward,upward,rightward pressure
Change laryngoscope

32
Q

When is a surgical airway done (cricothyroidotomy)

A

Failed intubation, failed ventilation

33
Q

What is the procedure for a surgical airway

A

Vertical incision through the skin then horizontal through the cricothyroid membrane. Insert a gloved finger to keep the hole open, place a bougie and insert ET tube over it (Seldinger technique). Remove the bougie. Confirm position with ETCO2 monitor

34
Q

When would you use an OP

A

Unconscious patient with no gag reflex at risk of airway obstruction