This document discusses electric shock, including what it is, how it can occur, the effects, and first aid treatment. An electric shock happens when a person comes into contact with an electric current. Shocks can cause burns, cardiac arrest, tissue damage or death depending on the voltage, current, and duration of contact. First aid involves disconnecting the power source, calling for emergency help, attending to injuries like burns, and monitoring for cardiac issues. Proper treatment and wound care is important to prevent further harm.

1. ELECTRIC SHOCK
BY: RAHUL SAMANATA
DEPT.: ELECTRICAL ENGINEERING
ROLL: EE/2018/03

2. WHAT IS AN ELECTRIC SHOCK
An electric shock occurs
when someone comes in
contact with an electric
energy source.
OR
It is physiological reaction
or injury caused by electric
current (AC/DC) passing
through the human body.

3. HOW CAN YOU GET AN ELECTRIC SHOCK
•By poorly insulated wires or
ungrounded electrical equipments.
•By using electrical equipments
while in contact with water.
•By being struck by lightning.

4. WHAT HAPPENS WHEN YOU GET AN ELECTRIC SHOCK
•An electric shock can have no
injury at all.
•Burns (which are the most
common).
•Cardiac arrest due to the
electrical effect on the heart.
•Muscle, nerve, and tissue
destruction from current passing
through body.
•Death (electrocution)

6. FACTORS DETERMINIG THE SEVERITY OF ELECTRIC
SHOCK
• The type of current:
• AC
• DC
• The amount of current:
• Voltage
• Ampere
• Low Frequency
• High Voltage
• Duration of contact
• Surface area of contact
• The pathway the electricity takes through the
body
• Overall health of a person

7. BODILY EFFECT DC AC 60Hz AC 10kHz
Slight sensation
felt in hand
MEN =1.0mA
WOMEN=0.6mA
0.4mA
0.3mA
7mA
5mA
Threshold of
perception
MEN =5.2mA
WOMEN=3.5mA
1.1mA
0.7mA
12mA
8mA
Painful, but
voluntary muscle
control maintained
MEN =62mA
WOMEN=41mA
9mA
6mA
55mA
37mA
Painful, unable to
let go of wires
MEN =76mA
WOMEN=51mA
16mA
10.5mA
75mA
50mA
Severe pain,
difficulty breathing
MEN =90mA
WOMEN=60mA
23mA
15mA
94mA
63mA
Possible heart
fibrillation after 3
seconds
MEN =500mA
WOMEN=500mA
100mA
100mA
NA
NA

8. SYMPTOMS
• Changes in alertness (consciousness)
• Broken bones
• Heart attack (chest, arm, neck, jaw, or back
pain)
• Headache
• Problem with swallowing vision, or hearing
• Irregular heartbeat
• Muscle spasms and pains
• Numbness or tingling
• Breathing problems or lung failure’Seizures
• Skin burns

9. DIAGNOSIS
•Electrocardiogram
•Complete blood count
•Urine test for muscle enzymes
•X-Ray
•CT Scan

10. WHAT TO DO AT THE TIME OF ELECTRIC SHOCK
• Disconnect the power supply. Don’t even
touch the victim until you are sure that the
power supply is turned off. Be especially
careful in wet areas, such as bathrooms, as
water conducts electricity. It may be safer to
turn off the electricity supply to the building
if possible to be absolutely sure.
• Or if the current can’t be turned off, use a
non-conducting object, such as broom,
chair, rug , or rubber doormat to push the
person away from the source of the current.
Do not use wet or metal object. If possible,
stand on something dry and that doesn’t
conduct electricity, such as a rubber or
folded news[paper.

11. WHAT TO NOT DO AT THE TIME OF ELECTRIC SHOCK
• Do NOT touch the person with your bare
hands if the body is still touching the source
of electricity
• Do NOT apply ice, butter, ointments,
medications, fluffy cotton dressings, or
adhesive bandages to a burn
• Do NOT remove dead skin or break blisters if
the person has been burned
• After the power is shut off, do NOT move
the person unless there is a risk of fire or
explosion

12. FIRST AID
• Check for a person’s response and breathing
it may be necessary to commence
cardiopulmonary resuscitation ( CPR )
• If the breathing is steady and they are
responsive, attend to their injuries. Cool the
burns with cool running water for 20 minutes.
Never put ointments or oils onto burns. If the
person has fallen from a height, try not to
move them unnecessarily in case they have
spinal injuries. Only move them if there is a
chance of further danger from the
environment ( such as falling objects.)
• Talk calmly and reassuringly to the person ..
• Be calm and don’t panic
• And don’t forget to call for ambulance in the
mean time

13. Treatment
• Examine patients completely , including for traumatic injuries
• Resuscitation
• Analgesia
• Wound care
• Cardiac monitoring for 6 to 12 h for the patient with following
• Arrhythmias
• Chest pain
• Any suggestion of cardiac damage
• Pregnancy
• Known heart disorders

14. Key points
• In addition to burn injuries, AC can freeze the patient’s hand to the
current source while DC can throw the patient, causing injury.
• Although skin burn severity does not predict the degree of internal
damage , internal damage is more severe if the skin has low resistance.
• Refer patients with significant electrical burns to a specialized burn unit
and, if significant internal damage is suspected, begin fluid
resuscitation.

15. THANK YOU