How to regulate the frequency of cardiac compression?

The heart is the engine of life. The beating of the heart allows blood to flow throughout the body, realizing systemic circulation of nutrients. Therefore, when the power exerted by the heart on the blood disappears, the patient will immediately go into shock and coma, and die within minutes. Once the heart stops beating, emergency measures must be taken. Cardiac compression can be used to restore the heartbeat. Let’s take a look at how to regulate the frequency of cardiac compression.

According to the current 2010 CPR guidelines, the frequency of chest compressions should be 100 times per minute, but this frequency is the compression frequency when only chest compressions are performed. In actual implementation, the ratio of chest compressions to mouth-to-mouth artificial respiration is 30:2, that is, two artificial respirations are performed after every thirty compressions. Therefore, the actual number of chest compressions per minute is often less than 100 times. However, when the patient is connected to a ventilator or Hands-only CPR is performed, the compression rate is still 100 times/minute.

condition

Conditions for external cardiac compression:

1. The patient has impaired consciousness and does not respond to calls;

2. Bilateral pupils are dilated and pupil light reflex disappears;

3. Feel that the patient's nasal breathing airflow is weakened or disappears; chest breathing movement disappears;

4. Weakened heartbeat;

5. The carotid artery pulsation disappears.

Methods

The specific method is as follows:

1. Lay the patient flat on his back, unbutton his collar, and use the head-tilt-chin-lift method to open the airway. The rescuer is on the left side of the patient.

2. The pressing area is the junction of the middle 1/3 and the lower 1/3 of the sternum.

3. Place the base of your left palm close to the pressing area, and overlap the base of your right palm on the back of your left hand, so that all fingers are away from the chest wall.

4. The rescuer should stretch his arms straight, place his shoulders directly above the patient's chest, and press vertically downward with force. The pressure should be steady and regular without interruption or sudden force, and the time for pressing down and relaxing should be roughly equal.

5. Number of compressions: 60 to 100 times per minute for adults.

6. Compression depth: The sternum of an adult sinks 3 to 5 cm.

7. While performing chest compressions, perform mouth-to-mouth artificial respiration. When there is only one person doing the rescue, you can first blow mouth-to-mouth, and then immediately perform cardiac compressions, about 4 to 5 times of compressions, and then exhale into the mouth once (for each mouth-to-mouth breath, 4 to 5 cardiac compressions are required).

8. Do not use too much force when pressing the heart to prevent rib fractures or other internal organ injuries. If the patient's face turns rosy, his breathing and heartbeat recover, his pulse can be felt, and his pupil shrinks normally, the rescue is considered a success.