Attention! Don't fall for "pseudoscience" again!

"Fake" may not only goods, there are many "fake knowledge" in life, you may have been confused!

This knowledge is vital in times of emergency! But if the mastery of the "pseudo-science", it will be very harmful! Come together to "fight fake" these pseudo-safety knowledge!

1. fire, in order to save people as soon as possible, should break into the door?

Scenario analysis

After the fire, the temperature of the room rose sharply, the air pressure also rose sharply, if the sudden opening of the outer door, and the air heat convection significantly increased, and by the ventilation conditions, room size and other factors, may cause the surface of combustible materials all involved in the burning state, that is, "boom combustion".

Correct practice

When you encounter a room on fire, want to break into the door, you must first feel the temperature of the door with your hands to confirm how far away the source of the fire is from the door. If the door is not hot, the risk of kicking the door is relatively small. In order to be safe, go in from the side before pushing the door open a little gap, so that the air slowly through, do not enter head-on.

2. fire in a high-rise building, the fire is from the bottom up, the higher the more dangerous, only as soon as possible to escape to the first floor, run out of the outdoor, there is hope for life?

Scenario analysis

In a fire, the lower floor of a high-rise building may be a sea of fire, so if you blindly escape downstairs, you are not throwing yourself into the fire?

The right way

With the increasing modernization of firefighting equipment, in the event of a fire, you can climb to the roof or take effective smoke and fire prevention measures in the room and wait for rescue.

3. electric plug board on fire, should immediately put out with water?

Scenario analysis

Since water is conductive, if you use water to douse the appliance on fire, it is likely to cause leakage, explosion and other dangerous accidents.

The correct approach

Immediately cut off the power supply, so as to ensure that no accidental electric shock will occur when extinguishing the fire. Next, use dry powder extinguishing agent or sand to cover the appliance that is still on fire. Remember, don't use water to pour over hot and fragile appliances to avoid explosion.

4. When there is no place to move when a flood comes, should we hold hands in a row to avoid being washed away?

Scenario analysis

The relevant test found that when the flood comes, a person needs to bear more than 100 kg of tension, so when we stand in a row, the force of each person reaches more than 100 kg, and will be washed away at once.

The correct approach

Can be linked into a line, so that the impact of the flood brought by the continuous decay. And, it is best for men in front and women in the back, because the force in front is greater. In the posture to slightly lean forward to ensure the center of gravity.

5. When you are injured and bleeding, can you paste the wound with clay to stop the bleeding?

Scenario analysis

Folk believe that using clay to paste the wound can be anti-inflammatory and stop bleeding, but in fact, the clay contains a tetanus bacillus, so this method not only fails to disinfect the efficacy, but also easily lead to tetanus, serious fatal.

The correct approach

After the wound bleeding situation, the first thing to do is to clean the dirt and blood around the wound, and then dress the wound to stop the bleeding, and adhere to the regular change of medicine.

6. When there is a burn on the body, should you apply ointment immediately?

Scenario analysis

Applying ointment immediately when you have a burn will only allow the heat to wrap around the skin and continue to damage the skin tissue.

Correct practice

The best way is to soak the injured part in cold water for 10-15 minutes, which will help the excess heat to dissipate, before applying the ointment.

7. If the electrocution victim has no breathing or pulse, can the electrocution victim be judged to be dead?

Scenario analysis

First aid for electrocution should be every second, before the medical personnel do not take over the rescue, should not give up the scene rescue, and not only according to the performance of no breathing or pulse, unauthorized judgment of the casualty died, give up the rescue.

The correct approach

If you find that the heartbeat or respiration has stopped, immediately and quickly resuscitate with CPR on the spot, and insist on continuous resuscitation, and at the same time contact the medical emergency center as soon as possible, so that medical personnel can take over the rescue.

8. When bitten by a poisonous snake in the wild, is it okay to use drugs by mouth?

Scenario analysis

If there are ulcers in the mouth or there are cases such as broken skin on the lips, the venom may threaten the rescuer through the ulcers. People with oral diseases such as dental caries and gingivitis should not use this method of rescue either.

The right way

Above the proximal joint of the bitten limb, tie it with a tourniquet or local material, loosely enough to block lymphatic and venous return to reduce the absorption of snake venom. And use a lot of water, soap and water to rinse the wound and surrounding skin, as soon as possible to medical treatment.

9. Can urine detoxify a jellyfish sting?

Scenario Analysis

Jellyfish release acidic venom. Urine is not purely alkaline and cannot achieve detoxification. When the sting is severe, there may be symptoms such as lowered blood pressure, dizziness, nausea and weakness, and muscle pain all over the body, making it painful or even fatal.

The right thing to do

After being stung, you must not rinse with fresh water as this will stimulate the release of toxins, apply alum to treat the wound and seek medical attention in time.