Power supply is divided into positive electrode and negative electrode. Connect a conductor between the positive and negative electrodes, and current will flow through this conductor. Similarly, transmission lines are also divided into live and neutral lines. Connect a conductor between the positive and negative electrodes, and current will flow through this conductor. The human body is a conductor, and the human body is big. When touching the live wire and the neutral wire, the two wires are connected together to form a short circuit, and a large current flows through the human body, which is the reason why people die from electric shock.
Extended data:
electroshock
1, get out of the power supply.
The first task of on-site treatment is to cut off the power supply in order to race against time.
According to the environment and conditions of the electric shock site, take the safest and quickest method to cut off the power supply or make the electric shock person leave the power supply.
Common methods are: turn off the power supply; Pick up the wire.
(1) Turn off the power? If you get an electric shock at home or near the switch, it is the simplest, safe and effective method to quickly turn off the power switch and open the main power switch.
(2) Connect the wires? Use dry wooden sticks, bamboo poles, etc. Pick the wire away from the person who gets an electric shock and fix it to prevent others from getting an electric shock.
(3) cut off the circuit? If it is not convenient to get close to the person who gets an electric shock in the wild or far away from the power switch, especially in rainy days, you can cut off the wires with insulating pliers or shovels, axes and knives with dry wooden handles 20 meters away from the scene.
(4) "Pull away" the electrocuted person? If the electrocuted person is unfortunately prone on the iron shell machine, the rescuer can put a dry wooden board or plastic board under his feet and wrap the electrocuted person with dry and insulating cloth, rope or clothes to pull it away from the power supply.
2, there are signs of hypoxia to oxygen.
3. Cardiopulmonary resuscitation
(1) If the breathing is weak or irregular, or even stops, and the heartbeat still exists, mouth-to-mouth artificial respiration, chest compressions in supine position or chest compressions in prone position should be performed immediately. If possible, tracheal intubation balloon or ventilator can be used to assist breathing.
(2) If the heart stops and breathing still exists, chest compressions should be performed immediately. For patients with ventricular fibrillation, asynchronous DC defibrillation should be performed when conditions permit.
(3) Cardiopulmonary resuscitation (CPR) should be carried out immediately for patients with cardiac arrest and respiratory arrest.
4, protect the body surface electric burn wound
(1) After the skin around the body surface electric burn wound is treated with iodophor, it is covered with sterile dressing to reduce pollution.
(2) If the wound has secondary bleeding, it should be treated accordingly.
5. Symptomatic treatment
(1) Actively prevent and treat complications such as cerebral edema and acute renal failure.
(2) Correct the imbalance of water, electrolyte and acid-base.
(3) The fracture should be properly fixed.
(4) Use antibiotics to prevent infection.
(5) Patients with cardiac arrest and respiratory arrest should establish effective ventilation and oxygen supply, and recover their heartbeat or be transferred to the hospital at the same time of effective cardiac compression. ① Establishment of venous access in critically ill patients. ② Check whether there are other combined injuries, such as fracture caused by falling from a height after electric injury. ③ Monitoring vital signs.
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