1-laboratory work first aid techniques for electric shock and other accidents

Resuscitation mode. In the resuscitation mode, artificial respiration and chest compressions are sequentially carried out in the following sequence:
1. On the chest of the mannequin lying on its back, unfasten the clothes and determine the need for breathing by the stationary state of the chest.
2. Examine the oral cavity in order to identify and remove foreign objects that prevent breathing.
3. Tilt the mannequin's head as far back as possible, placing one hand under the neck and pressing the other on the forehead (this ensures airway patency).
4. Turn the head of the mannequin to one side, remove foreign objects if necessary.
5. Place the gauze over the mannequin's mouth. Take a deep breath and then, pressing your mouth tightly against the mannequin's mouth and pinching his nose with your fingers or your cheek, exhale into it (while the mannequin's chest should rise). After each blowing, the mouth and nose of the victim are released for the free exit of air from the lungs. Air is blown 2 times in a row, after which an external heart massage is performed.
6. Determine the area on the chest where you need to place your hands for external heart massage (the point is one third up from the lower end of the sternum). At the point found, place the lower part of the palm of one hand, and then place the second hand at a right angle on top of the first hand.
7. Press with a quick push, slightly helping by tilting the body so as to move the lower part of the sternum down by 4 cm. After the push, the arms remain in the lower position for approximately 0.5 s, then slightly straighten and relax the arms without taking them away from mannequin chest. Chest compressions are performed 30 times in a row.
After a correctly performed resuscitation complex, the simulator automatically “comes to life”: a pulse appears on the carotid artery, sound signals, the pupils of the victim narrow.

Test questions:

1. What are the effects of electric current passing through the human body?
2. Types of electric shock to a person, differences between electric injuries and electric shocks.
3. What are perceptible, non-release and fibrillation currents, their threshold values ​​and their effects on a person.
4. What effect does direct and alternating current of various frequencies have on the outcome of the lesion.

APPENDIX
Calculation formulas for various schemes for connecting a person to an electrical network