Electrothermal

Question 1

Most common manner of death in electrothermal injuries

Answer 1

Accident

Question 2

What is the Ohms Law?

Answer 2

V= Current X resistence

Question 2

What is the voltage treshold that distinguish low from high voltage?

Answer 2

1000 V

Question 2

Histology features of electrothermal injuries

Answer 2

Vacuolisation of epidermis
Blister
Ellongation + streaming of cells
Metallisation

Question 3

Gross findings in low voltage electrothermal burns

Answer 3

Joule burn:
- Charred center
- Pale halo
- Hyperemic halo

Question 4

3 mechanism of death in electrothermal injuries

Answer 4

Arrhythmia due to current passing by the heart

Muscle spasm (intercostal and diaphragm)

Respiratory failure due to brainstem involvment (when head is close to large electric wires)

Question 5

Gross finding in high voltage electrothermal burns

Answer 5

Crocodile skin

Question 6

6 ways lighthning can injur the body

Answer 6

Direct strike (3-5%)

Indirect strike (lightning strikes an object that is touched by the individual)

Side flash (30-35%)

Step potential (50-55%)

Upward streamer (10-15%)

Exposive barotrauma (barotrauma to lungs, perforated tympanium)