Electrical Burns in the ED

Epidemiology of Electrical Injuries

2 Topics

Age Distribution Patterns

The relevant physics of Electrical injuries

2 Topics

UK Electrical supply

Pathophysiology and clinical features of Electrical Injuries

2 Topics

Severity and Type of Injuries

Clinical Features of Injury

The Management of Electrical Injuries

4 Topics

Cardio Respiratory Arrest Management

Thermal Injury Management

Patient Monitoring

Factors and Features of Lightning Strike

2 Topics

Lightning Injuries

Clinical Features

Management of Lightning Strike

4 Topics

Electrical burns in the ED – Post Test

Electrical burns in the ED – Post Test

Electrical Burns in the ED Electrical burns in the ED – Post Test

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Question 1 of 10

1. Question
Regarding lightning strike, which of the following statements are true?
- Lightning causes superficial burns
- Lichtenberg’s flowers is a permanent form of deep dermal burn
- VF is common following lightning strike
- The incidence of lightning strike is equal in the sexes
- Long term disability is very unusual
Correct

Incorrect
Question 2 of 10

2. Question
Which of the following statements are true regarding the epidemiology of electrical injuries?
- Electrical injuries follow a bimodal age distribution pattern
- Electrical injuries occur with an equal incidence in males and females
- Young children are more commonly injured by high voltage sources
- The incidence of fatal electrocution is probably underestimated
- Electrical burns account for 10% of admissions to burns units
Correct

Incorrect
Question 3 of 10

3. Question
Which of the following statements are true regarding alternating and direct current?
- Most domestic electricity is in the form of direct current
- Alternating current can cause respiratory muscle tetany
- Direct current can cause asystole
- Direct current is associated with violent single muscle contraction
- Alternating current causes VF at a magnitude of 1-4 milliamps (mA)
Correct

Incorrect
Question 4 of 10

4. Question
Which of the following can result from Rhabdomyolysis caused by electrical current?
- Hyperkalaemia
- Hypercalcaemia
- Renal failure
- Hyperphosphataemia
- Brown discolouration of the urine
Correct

Incorrect
Question 5 of 10

5. Question
Which of the following factors are thought to increase the risk of dysrhythmias in electrical injury?
- Transthoracic current pathway
- High voltage electrical injuries
- Abnormal baseline ECG upon arrival at hospital
- Loss of consciousness
- Marked rhabdomyolysis
Correct

Incorrect
Question 6 of 10

6. Question
Which of the following statements is true regarding the management of electrical injuries?
- Large volumes of fluids are not required in resuscitation if surface area of the burn is under 10%
- Compartment syndrome should be actively sought
- Invasive monitoring is rarely helpful
- Patients should not be log rolled
- Entrance and exit wounds are unhelpful in predicting possible current pathways
Correct

Incorrect
Question 7 of 10

7. Question
Which of the following can be a result of current induced vasospasm and vascular injury?
- Delayed haemorrhage from intraoral burns
- Critical limb ischaemia
- Delayed circulation of resuscitative fluid and drugs
- False aneurysm formation
- Misdiagnosis of compartment syndrome
Correct

Incorrect
Question 8 of 10

8. Question
Which of the following statements is true regarding lightning?
- Lightning can be regarded as alternating current
- Lightning never strikes indoors
- Lightning strike is almost always fatal
- Lightning strike is more common toward the equator
- Direct lightning strike is the most common form of injury
Correct

Incorrect
Question 9 of 10

9. Question
Which of the following statements are true regarding lightning strike?
- In a situation with multiple casualties from lightning strike the apparently dead should receive treatment priority
- Temporary paralysis is a recognised feature of lightning strike
- Blunt trauma is a recognised feature of lightning strikes
- Twenty-five people die from lightning strike each year in the UK
- Lightning strike is an easy diagnosis to make
Correct

Incorrect
Question 10 of 10

10. Question
Which of the following statements is true regarding thermal energy generated during electrical injury?
- Duration of current exposure has the greatest influence on heat generated
- Tissues with high resistance suffer the least thermal damage
- Tissue resistance remains constant during the application of current
- Joules’s law is V=IxR
- Thick dry skin will sustain more damage than moist thin skin during exposure to electrical current
Correct

Incorrect

2 Comments

Collapse Comments

Dr Michael Ahmed Daniju July 7, 2023 at 3:39 am

Very interesting topic, not usually covered in most text book in such depth as here. I have definitely learnt a lot.

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James Hargreaves April 3, 2024 at 10:08 am

Wonderful module on an interesting topic. Well structured and tested. Thanks!

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