Major Trauma Flashcards

1
Q

What is major trauma?

A

Serious and often multiple injuries where there is a strong possibility of death or disability

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2
Q

What is the epidemiology of trauma?

A

4th leading cause of death in the west

Leading cause of death in the 1st 4 decades

Predicted to become the 3rd largest disease burden in the world by 2020

Economically important - most people injured are in work

Early intervention can be life saving - ‘golden hour’ + ‘platinum 10 minutes’

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3
Q

What are the key principles to major trauma?

A

Critically ill patient: ABCDE (as will die in that order)

Primary survey: (trauma) CABCDE
Control catastrophic haemorrhage 
Airway + C-spine protection 
Breathing with ventilation 
Circulation with haemorrhage control 
Disability: Neuro status  (head + spine) 
Exposure /Environment
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4
Q

What is the process of initial assessment?

A

Preparation
Triage
Primary survey (+/- adjuncts e.g. imaging +/- resus)
Transferring? (CT/theatre/another hospital)
Secondary survey (2nd more detailed assessment)
Monitoring and re-evaluation

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5
Q

What are some mechanisms for injury?

A

Blunt injury:
Road traffic collision - C-spine injury, blunt thoracic and cardiac injury, hollow viscus Berforation/solid organ injury, pelvic/acetabular/femur injuries
Assault - often head injuries either direct or from falling, stamping on abdo/chest
Fall from >20ft/2 floors - could injure anything
Crush injuries - building collapse, industrial injury
Sports injuries - splenic/renal injury in rugby, assault in football

Sharp injury:
Stabbing
Self-harm
Gun shot

Blast injury:
Primary - blast wave disrupts gas filled structures e.g. burst alveoli
Secondary - impact airborne debris
Tertiary - transmission of body (get thrown etc)
Quaternary - anything else - burns, building collapse etc

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6
Q

What are the priorities of trauma management?

A

Stop bleeding
Prevent hypoxia
Prevent acidaemia
Avoid traumatic cardiac arrest

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7
Q

What is an ATMIST handover?

A
Age 
Time - of incident 
Mechanism 
Injuries found 
Signs - observations 
Treatments - so far given
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8
Q

What are some signs on triage that would warrant transfer to a specialist major trauma centre?

A

Glasgow Coma Score <14
Sustained systolic blood pressure <90
Respiratory rate <10 >29

Chest injury with altered physiology
Traumatic amputation proximal to wrist/ankle
Penetrating trauma to neck, chest, abdomen, back or groin
Suspected open and/or depressed skull fracture
Suspected pelvic fracture
Spinal trauma suggested by abnormal neurology
Trauma along with facial and/or circumferential burns
Time critical (e.g. isolated burns in excess of 20%)

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9
Q

How do you manage catastrophic bleeding

A
Clear clots obscuring bleeding source 
Direct pressure +++ e.g. entire weight applied through a knee onto a femoral laceration 
Indirect pressure 
Torniquet 
Haemostatic agents e.g. ceelox
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10
Q

How do you apply a torniquet?

A

Apply 2-3 inches above bleeding source
Tighten - twist rod until bleeding stops
Ensure bleeding stopped and no distal pulse - will be painful and limb may become damaged bu will save life
If not working - apply a second torniquet above the first

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11
Q

What is a secure airway? How do you clear one?

A

Airway can be cleared by suction + kept clear with antiemetics until intubation and ventilation is possible

Log roll = a temporary manoeuvre which allows a patient to vomit whilst protecting C-spine - requires 5x people to assist

Expected time frame for securing/RSI = 45mins - so very important to call in major trauma as soon as known to give team time to prep

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12
Q

What are the absolute indications for intubation>

A

Inability to maintain and protect own airway regardless of consciousness level e.g. may be vomiting

Inability to maintain adequate O2 with less invasive manoeuvres
Inability to maintain normocapnia with less invasive manoeuvres

Deteriorating GCS <2 on motor

Significant facial injuries

Seizures

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13
Q

How do you mange burns?

A

In presence of burns or blast injury +
Hypoxaemia or hypercapnia
Deep facial burns
Full thickness neck burns

Consider early intubation as airway can swell

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14
Q

What are some relative indications for intubation?

A

Haemorrhagic shock + evolving metabolic acidosis

Agitated patient - e.g. lots of pain

Multiple patient injuries

Transfer to another area of the hospital/transition to other theatres

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15
Q

How do you manage the C-spine?

A

Keep them in neutral position - NOT NECK EXTENSION OR FLEXION (WORSE) AS CAN DISPLACE FRACTURES AND CAUSE SPINAL INJURY

Initially just with hands then with possible cuffs/collars:
Hard collar + speed blocks + tape (locks head in one place)

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16
Q

What are some high risk factors for C-spine injury that would warrant immobilisation?

A

Age 65 years or older

Dangerous mechanism of injury (fall from a height of greater than 1 metre or 5 steps, axial load to the head e.g. diving, high-speed motor vehicle collision, rollover motor accident, ejection from a motor vehicle, accident involving motorised recreational vehicles, bicycle collision, horse riding accidents)

Paraesthesia in the upper or lower limbs

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17
Q

What are some life threatening chest injuries one would find on a primary survey?

A

ATOM FC

Airway obstruction (including with a hole in it), disruption 
Tension pneumothorax 
Open pneumothorax
Massive haemothorax 
Flail chest 
Cardiac tamponade
18
Q

What are the signs of tension pneumothorax?

A
Most commonly:
Agitation - 'air hungry' 
Hypoxia
Hypotension (secondary to diminished venous return due to IVC/SVC compression)
Tachycardia 

Other possible:
Diminished breath sounds - though due to poor ventilation?
Hyperresonance - but could be a haemothorax on other side and misinterpreted at normal resonance
Deviated trachea - mostly a post mortem finding or impending death
Distended neck veins

19
Q

How do you manage a tension pneumothorax?

A

Needle thoracocentesis - 2nd midclavicular line (but can miss, there are other places)

Thoracostomy followed by a large bore chest drain - thoracostomy will initially alleviate, drain will complete

20
Q

What is an open pneumothorax?

A

Wound to chest wall communicating with pleural cavity - air passes through referentailly to trachea - large hole (small hole can become tension as wound seals on expiration and acts as one way valve)

21
Q

What is a massive haemothorax ?

A

> 1500ml blood extravascular - can produce a tamponade effect - can rebleed upon decompression
Reduced air sounds, hyper resonant
Obtain IV access prior to decompression
1500ml blood or >200ml/hr consider urgent thoracotomy

Resusative thoracotomy -

22
Q

What is a flail chest?

A

Fracture of 2+ ribs in 2+ places - ‘floating section ribs’

Broken ribs move paradoxically in respiration - negative impact on ventilation

Needs intubation and surgery e.g. plating of ribs

23
Q

What are the signs of cardiac tamponade?

A

Becks triad:
Hypotension
Diminshed heart sounds
Distended neck veins

Though clinically not that useful

24
Q

What region comprises the cardiac box?

A

Area of the chest overlying the heart, bounded by the midclavicular lines (laterally) and from the clavicles to the tip of the xiphoid process

On the back and the front

Any trauma here - high index of suspicion for cardiac trauma e.g. cardiac tamponade

25
Q

How do you manage a cardiac tamponade?

A

Emergency thoracotomy_____

26
Q

What injuries are common on secondary survey?

A

Simple pneumothorax
Aortic injuries
Diaphragmatic injuries
Fractured ribs
Lung contusion (e.g. brusing + failure to ventilate)
Cardiac contusion (e.g. bruising + failure to contract well)

27
Q

What are the signs of a bleeding patient?

A
Increased resp rate = very early sign 
Sweaty 
Anxious-agitation-confusion (in that order)
Pallor 
Tachyc 
Long CRT 
Hypotension + bradycardia (late signs)
28
Q

Where are the most likely locations for fatal bleeding?

A

Blood on the floor = External haemorrhage
+ 4 more
Chest
Abdo
Pelvis
Extremities - long bones (FEMUR, humerus, tibia)

29
Q

Inidications for emergency laparotomy?

A

Peritonism
Free air on radiography
GI haemorrhage
Persistent/resistant haemodynamic instability

30
Q

How do you manage pelvic fractures?

A

Potential for massive haemorrhage - needs pelvic binders

31
Q

What is permissive hypotension?

A

Allow for a degree of hypotension:
Systolic of 90mmHg
Minimise death from bleeding + death from hypotension

32
Q

What are the principles of haemodynamic management in trauma?

A
Indications for fluid 
Systolic BP <90 
HR >130
Low GCS 
Obvious massive ongoing blood loss 

Can give small crystalloid boluses IF YOU HAVE TO and then wait until blood is available

NOT massive amounts of cystalloid - hyperchloraemic acidosis (if given lots) + no O2 carrying + no other useful blood products (e.g. platelets)

33
Q

How do you replace blood + products?

A

1 unit of blood
1 unit of platelets
1 unit of fresh-frozen plasma

34
Q

How do you manage bleeding?

A

Pelvic binder
Splint long bone fractures
Permissive hypotension
Tranexamic acid 1g 10min then 1g infusion over 24hrs
Emergent damage control surgery - stabilising critical injuries before more specific surgery later
Limit colloid

35
Q

How do you assess neurology in primary survey?

A

AVPU
Pupillary size + response
Motor GCS = most predictive
Sensory level if available

36
Q

What predicts outcome in head injury?

A

Hypotension and hypoxia - even one episode of either (worse if both) and can be iatrogenic so be careful

37
Q

How do you manage BP in head injury?

A

Cerebral perfusion pressure = MAP - ICP
Systolic >100 ideal
Trade off between increased bodily bleeding + too low CPP

Aim for normal everything else e,g, glucose

38
Q

What is Cushing’s reflex?

A

CLARITY NEEDED

Raised ICP = Hypertension = (baroreceptor stimulation leading to) Bradycardia
(brainstem compression
leading to) Irregular breathing patterns

39
Q

How do you assess when looking at exposure/environment?

A

Look for obvious limb threatening injuries
Ensure patient is being KEPT WARM - hypothermia is very bad
Pain management

40
Q

What are the signs of a base of skull fracture?

A

Panda eyes
CSF/blood leakage out of ears/nose
Battles signs = bruising over mastoid processes
Hemotympanum - tympanic membrane red/black and bulging with blood

41
Q

How do you prepare critical patients for safe transfer between hospitals?

A

Intubate, accompanied by anaesthetist + assistant, make sure physiology e.g. CPP is adequate before (IV fluid, ventilation, catheter etc), gastric tube - orogastric (NOT NASO WITH SKULL BASE FRACTURE AS MAY ACCIDENTALLY PUT INTO BRAIN) - this may help if patient has aspirated lots of air and stomach is splinting diaphragm); communications - 2-way with other hospital about what’s happened so far and where they’re going

42
Q

What are the criteria for intubation/ventilation in head injury patients?

A

GCS <8 (as gag reflex is lost)
Decreasing GCS
Unstable facial fractures (that have potential to occlude airway due to position or excessive bleeding)
Non-compliance for CT e.g. if confused and distressed