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 electrocuted should pay special attention to prevent injuries from falling 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.