13-EHS Section 2 Flashcards
According to the Electrical Safety Hand Book, What is the critical factor determining the effect of electricity on the body?
a. Voltage
b. Amperage
c. Resistance
d. Wattage
B
The figures in Table 2, illustrate that a very small
amount of current for less than a second can be
fatal. It is the amperage that kills or injures.
According to the Electrical Safety Hand Book, , why is the path of electricity through the body critical?
a. It determines the voltage
b. It affects the duration of exposure
c. It influences the severity of the shock
d. It defines the resistance of the body
C
The path of electricity through the body is also critical. For example, current passing through the heart or brain is more life threatening than current passing through the fingers.
According to the Electrical Safety Hand Book, What is the approximate current required to light a 120-watt bulb?
a. 100 milliamps
b. 500 milliamps
c. 1 ampere
d. 2 amperes
C
It takes
approximately 1,000 milliamps (1 amp) of current
to light a 120-wat bulb.
According to the Electrical Safety Hand Book, In Table 2, what milliampere range is referred to as the “let-go” range?
a. 5mA - 9mA
b. 6mA - 16mA
c. 17mA - 99mA
d. 21mA - 99mA
B
6mA - 16mA Painful shock, begin to lose muscular
control. Commonly referred to as the
freezing current or “let-go” range.
According to the Electrical Safety Hand Book, At what current level does a GFCI (Ground Fault Circuit Interrupter) operate?
a. 1 mA
b. 5 mA
c. 10 mA
d. 20 mA
B
5mA - 9mA A GFCI operates
According to the Electrical Safety Hand Book, What is not one of the effects of current range of 17mA - 99mA?
a. Extreme pain
b. Respiratory arrest
c. Severe burns
d. Muscular contractions
C
17mA - 99mA Extreme pain, respiratory arrest,
severe muscular contractions.
Individual cannot let go. Death is possible
According to the Electrical Safety Hand Book, At what current level does ventricular fibrillation (uneven pumping of the heart) begin to occur?
a. 50mA
b. 100mA
c. 200mA
d. > 2,000mA
B
100mA - 200mA Ventricular fibrillation (uneven, uncoordinated pumping of the heart). Muscular contraction and nerve damage begins to occur. Death is likely.
According to the Electrical Safety Hand Book, What is the probable effect on the human body at a current level of 5 mA?
a. Extreme pain
b. Slight shock
c. Muscle spasm
d. Cardiac arrest
B
5 mA Slight shock felt; not painful, but disturbing. Average individual can let go. However strong involuntary reactions to shocks in this range may led to injuries
According to the Electrical Safety Hand Book, Which factor does NOT influence the severity of an electrical shock, according to the text?
a. Conduction of electricity through the head
b. Area of skin exposed to the electrical source
c. Moisture level of the skin
d. Pressure of the body against the source
A
1. Condition of the skin,
2. Area of skin exposed to the electrical source,
3. Pressure of the body against the source, and
4. Moisture level of the surface of the skin.
According to the Electrical Safety Hand Book, What is the recommended action for emergency personnel in the case of cardiac arrest?
a. Start CPR and/or AED defibrillation
b. Immobilize the affected area
c. Cover wounds with clean dry dressings
d. Start artificial respiration immediately
A
Cardiac arrest. Heart action may stop if control centers of the heart are paralyzed. Start cardiopulmonary resuscitation protocols and/or AED automimic external defibrillation
According to the Electrical Safety Hand Book, In the event of rapid and irregular heartbeat (ventricular fibrillation), what action is recommended?
a. Start CPR and/or AED defibrillation
b. Apply cool dressings to the eyes
c. Monitor life signs for deterioration
d. Turn off the electrical supply
A
Rapid and irregular heart beat (ventricular fibrillation).
Heart muscle quivers instead of contracting normally. This condition is more likely to be caused by a shock of relatively low voltage. Start cardiopulmonary resuscitation protocols and/or AED automimic external defibrillation
According to the Electrical Safety Hand Book, What is the primary effect of electrical burns on the body?
a. Immediate loss of consciousness
b. Destruction of body tissues and slow healing
c. Respiratory arrest
d. Temporary blindness
B
Electrical Burns. Current passing through the body
generates heat and may cause blisters on the skin.
If the current is strong enough, it may destroy body
issue and result in severe electrical burns. The outward
appearance of electrical burns may not seem serious,
but the damage is often very deep and healing is slow.
Emergency procedure for burns. Prompt medical attention is
required to prevent infection. Examine the victim for an exit
burn as well as an entry burn and cover wounds with clean
dry dressings.
According to the Electrical Safety Hand Book, What should be done for arc flash burns to the eyes?
a. Cover both eyes with cool, moist dressings
b. Remove melted clothing from the skin
c. Immobilize the affected area
d. Start CPR
A
Arc Flash burns. Flash or ultraviolet light burns to eyes.
For skin burns, do not remove clothing that has melted into
the skin. Cover both eyes with thick, cool, moist dressings and
lightly bandage in place. If ater explanaion, the paient does
not want both eyes covered only cover the eye that is most
painful. Get the patient to medical help. Transport the patient on a stretcher. Never have the patient walk
According to the Electrical Safety Hand Book, What can be a consequence of involuntary muscular reactions to high voltage electrical contact?
a. Burns to the skin
b. Fractures or contusions
c. Respiratory arrest
d. Temporary blindness
B
Fractures. Broken bones caused by violent involuntary muscular reaction to high voltage electrical contact. Involuntary muscular reaction may also have caused the victim to jump or fall resulting in more serious injuries such as fractures or contusions. Assess for fractures or dislocations. Steady and support (immobilize) the affected area.
According to the Electrical Safety Hand Book, What is the safest alternative before providing treatment to an electrical shock victim?
a. Administer first aid immediately
b. Turn off the electrical supply
c. Cover the affected area with ice
d. Wait for medical professionals to arrive
B
Shock (electrical contact induced). Get victim to lie down and treat for physiological shock. Loosen clothing, cool by fanning if skin is hot, cover with
blanket if cold or clammy. Monitor to ensure life signs are
stable and not deteriorating.
