direct contact electric shock

indirect contact electric shock

Single phase electric shock

Two-phase electric shock

Step voltage electric shock

electric current burns

arc burn

The effective value of the perceived current value of an adult male is approximately 1.1 mA, with a minimum of 0.5mA; an adult female is approximately 0.7mA

The average discharge current for adult men is about 16mA, and the average discharge current for adult women is about 10.5 mA.

The human ventricular fibrillation current is about 50mA; the body resistance is generally about 500 Ω. Under normal circumstances, the resistance of the human body under the action of 220V power frequency voltage is 1000 ~ 2000 Ω.

1. Turn off the power switch

2. Cut the wires with an insulated tool

3. Use an insulating object to move the live conductor away from the person receiving the electric shock.

4. Pull the person who gets electrocuted away from the electrified object

① Immediately notify the relevant departments of the power outage.

② Put on insulating gloves and boots, and use insulating tools with corresponding voltage levels to open the switch.

① When rescuing people, to ensure your own safety and prevent yourself from electric shock, you must use appropriate insulated tools instead of metal or wet objects, and operate with one hand as much as possible.

② When getting an electric shock, the current will cause muscle spasm and the hand will tightly hold the electrified object. Once the power is cut off, without the effect of the current, the hand may loosen and cause the person to fall. People who get electric shock should pay special attention to prevent falling injuries when they are at high places.

③ When an electric shock accident occurs in a dark place, temporary lighting should be provided quickly to prevent yourself from getting an electric shock and to make it easier to see the status of the electric shock victim for rescue purposes.

④ In case of high-voltage electric shock, do not use dry wooden sticks or bamboo poles to open high-voltage wires. A sufficient safe distance should be maintained from high-voltage live objects to prevent electric shock due to step voltage.

Determine whether he is conscious or not

Determine whether the person is breathing and having a heartbeat

Check for broken bones, burns, and other injuries

① After disconnecting from the power supply, the person who got the electric shock should be conscious and conscious. The person who got the electric shock should lie down and rest quietly on the spot without moving around to reduce the burden on the heart. Someone should closely observe the changes in his breathing and pulse. Keep warm when the weather is cold.

② If the person who gets an electric shock is unconscious and has a heartbeat but stops breathing, mouth-to-mouth artificial respiration should be performed immediately. If artificial respiration is not performed in time, the heart will soon stop beating due to lack of oxygen.

③ If the person who gets an electric shock is unconscious and breathing, but the heartbeat has stopped, an artificial extrathoracic heart should be squeezed immediately.

④ If the person who gets an electric shock has his or her heartbeat stopped and his breathing also stopped or his breathing is weak, cardiopulmonary resuscitation should be performed immediately.

⑤ If the heartbeat and breathing stop and there are other injuries, cardiopulmonary resuscitation should be performed first, and then the trauma should be treated.

If breathing stops, gas exchange cannot occur. If the heart stops, blood circulation cannot occur, which will cause hypoxia and damage to cells. Brain cells are most sensitive to hypoxia. Generally, hypoxia for more than 8 minutes will lead to brain death and the patient will become a vegetative state even after rescue.

① The role of artificial respiration

② Preparations before artificial respiration

① Take a deep breath. The volume of air blown into the lungs of the casualty should reach 800-1200mL (adults)

② Mouth to mouth, pinch your nose and blow.

①The role of heart compression

② Preparation before compressing the heart

Kneel on one side, fold your hands, palms against the pressure point, lean forward slightly, straighten your arms, press down vertically, release after pressing, press 100 times per minute, adults press down 4~5cm, children press down 2 ~3cm.

① Single person rescue

② Double rescue

① Provide immediate, on-site, correct and continuous rescue. Rescue on the spot immediately after disconnecting from the power source to avoid transferring the injured and delaying the rescue opportunity. Rescue should be continuous.

A. 80 times/minute

B. 60 times/minute

C. 100 times/minute

D. 70 times/minute

A. Raise your head and chin

B. Remove fixed dentures

C. Remove oral foreign matter

A. 30

B．50

C. 60

D. 100

A. 30:2

B. 15:2

C. 10:2

D. 30:1

A. Head-up and neck-lift method

B. Two-hand mandibular press method

C. Cricoid cartilage compression method

D. One-hand neck support method

A. 2 times

B. 5 times

C. 3 times

D. 6 times

A. Restoring posture

B. Resuscitation position

C. Coma position

A. Artificial respiration

B. Chest compressions

C. Chest compressions and artificial respiration

D. Intramuscular injection of lobelin and colamin

A. Touch the aorta in the neck for 5 to 10 seconds

B. Open your eyes and observe whether the pupils are dilated

C. No trauma means no harm

A. 30

B.16

C. 50

A. 300

B．200

C. 500

A. Single phase

B. Two phases

C. Induction electricity

A. Single phase

B. Two phases

C. Three phases

A. Limbs

B. Applicable to the whole body

C. Head, limbs

A. Chest compressions

B. Artificial respiration

C. Chest compressions and artificial respiration

A. Clean foreign objects in the mouth and open the respiratory tract

B. Ignore it and continue rescue.

C. Open your mouth wide and expand your airways

A.3

B.2

C.4

A. Immediately rescue the unconscious person

B. Cut off the power supply, take protective measures, and move people to a safe area.

C. Run away immediately

A. 5-6cm

B. 2-3cm

C. Any depth

A. 500 to 700

B. 1200 to 1400

C. 800 to 1200

A. Suitable for the whole body

B. Limbs

C. Head, limbs

A. Get bigger

B. become smaller

C. unchanged

A. Open your eyes and wipe it off with your hands

B. Wipe it clean with clothes

C. Cover your eyes and look for spray water to clean them.

D. Open your eyes and wipe them clean with a towel

A. Chemistry

B. hot

C. Heat, Chemistry and Mechanics

A. 30

B.16

C. 50

A. Electrical burns

B. Electric branding

C. Skin metallization

A. Supine chest pressing method

B. External chest cardiac compression method

C. Prone back pressing method

A.1

B.2

C.3

A. The aorta in the neck does not beat.

B. No breathing

C. Pupil dilation

A. 800 to 1600

B. 500 to 1000

C. 1000 to 2000

A. The human body receives electric current and is shocked

B. Burn

C. electroshock

A. The aorta in the neck does not beat.

B. Pupil dilation

C. No breathing

D. Blood pressure cannot be measured

A.5

B.8

C.12

A. Human error

B. Human emotions

C. Technical level

A. Visible light

B. Infrared ray

C. Ultraviolet rays

A.2.5

B.3

C.4

A. Single phase

B. Step voltage

C. Induction electricity

A. unchanged

B. The lower

C. The higher

209. The first step in first aid for electric shock is to quickly remove the victim from the electric current, and the second step is to send him to the hospital immediately.

198 After discovering that someone has been electrocuted, the hospital should be notified immediately to send an ambulance for rescue. Before the doctor arrives, on-site personnel cannot rescue the electrocuted person to avoid secondary injuries.

178. During cardiopulmonary resuscitation, the position where the heart is compressed is the middle of the sternum, not other locations.

174. During cardiopulmonary resuscitation, the position where the heart is compressed is the mid-sternal position.

172. When someone is found unconscious due to electric shock, the patient should be picked up directly and removed from the electrified area.

171. When someone is found unconscious due to electric shock, rescue should be carried out immediately on the spot without calling for pedestrians.

147. Generally speaking, single-phase electric shock in a grounded power grid is less dangerous than in an ungrounded power grid.

128. After being disconnected from the power source, the person who was electrocuted should be allowed to walk back and forth to enhance blood circulation if he or she is conscious.

125. As the power-on time increases, the resistance of the human body increases due to sweating, resulting in a decrease in the current passing through the human body.

94. The risk of two-phase electric shock is less than that of single-phase electric shock.

67. When the probability is 50%, the average perceived current value of an adult male is about 1.1mA, the minimum is 0.5mA, and the average perceived current value of an adult female is about 0.6mA.

64. After someone is found unconscious due to electric shock, the rescuer should immediately carry out rescue operations on the spot without calling out to pedestrians.

58. For cardiac arrest, the golden rescue time is within 6 minutes.

56. When performing cardiopulmonary resuscitation on adults, the most common method to open the airway is to push the jaw with both hands instead of raising the head and chin.

19. When judging first aid for electric shock, we must implement the eight-character first aid policy of "quick, on-site, correct, and persistent". After discovering that someone is unconscious due to electric shock, you should directly pick up the patient and leave the electrified area.

5.30Hz~40Hz current is the most dangerous.

375. The first aid method for eye contact with chemical media is ().

29. When the injured person has trismus and cannot perform mouth-to-mouth artificial respiration, tools should be used to pry the mouth open instead of mouth-to-nose blowing.

67. The intensity of current passing through the human body during an electric shock depends on ().

Failure to explain that the environment is safe or move the injured person to a safe place. 1 point deducted.

1 point will be deducted for calling the patient loudly without patting the patient's shoulder.

Dial "120" emergency number without asking for help, fail to undress and undress or correct the patient's position. 1 point will be deducted.

The touching position is wrong, the carotid arteries on both sides are touched at the same time, the judgment time is longer than 10 seconds, or Less than 5 seconds, 1 point will be deducted

No errors in judgment or method. 1 point deducted.

1 point will be deducted if the head is not tilted to clean or the angle is less than 45 degrees, and the dentures are not removed.

1 point will be deducted if the airway is not opened, the head is tilted back too much or not enough.

2 points will be deducted for position deviation or incorrect positioning method.

Not according to the compression requirements: rate 100~120 times/minute□, compression depth 5~6cm, 30 times per cycle, 1 point for each item, 2 points in total

Movements are not standard: standing on knees with both legs, folding hands, crossing fingers, and pressing with the heels of palms Pressing position, arms vertical without bending elbows, and even rhythm. 1 point for each item, 2 points in total.

1 point will be deducted if 5 cycles are not completed.

Not complying with the requirements for blowing: pinch the nasal cavity when blowing, release the nasal cavity after blowing, and the process must be Observe the rise and fall of the patient's chest and insufflate twice in each cycle. 1 point for each item, totaling 2 points.

The movements are not standard: blow for 2 seconds and then release for 3 seconds, blow and lift the jaw, the rhythm is even, 1 point for each item, 2 points in total

1 point deducted for not completing 5 cycles