Oral operation of cardiopulmonary resuscitation

The operation process of cardiopulmonary resuscitation is as follows:

1. Judgment of cardiac arrest: ① The patient suddenly turned pale and lost consciousness; ② Aortic pulsation disappeared; ③ Breathing stops; 4 pale or cyanosis, dilated pupils; ⑤ Apical beats and heart sounds disappear.

2. Steps of cardiopulmonary resuscitation: C → A → B; Chest compressions, A airway opening, B artificial respiration.

3, cardiopulmonary resuscitation operation process:

(1) Assess whether the environment is safe; (2) judging whether there is breathing or consciousness: pat the patient who calls again and touch the carotid artery to beat; (3) Call for help immediately; (4) Posture: Lie the patient on the hard bed or the ground, and untie the collar, tie, scarf and belt.

Extension of the basic definition of cardiopulmonary resuscitation;

Cardiopulmonary resuscitation (CPR) is a technique to save cardiac arrest and breathing. Is to restore the patient's spontaneous breathing and spontaneous circulation.

During cardiac arrest, although the heart lost its effective pumping function, it did not completely stop ECG and cardiac activity. According to ECG characteristics and cardiac activity, cardiac arrest can be divided into the following three types of expansion:

1, Ventricular fibrillation: rapid, irregular and uncoordinated persistent fibrillation of ventricular muscles. The electrocardiogram showed that QRS complex disappeared and was replaced by irregular persistent ventricular fibrillation with a frequency of 200-500 beats/min. This kind of cardiac arrest is the most common type, accounting for about 80%. If ventricular fibrillation can be defibrillated immediately, the success rate of resuscitation is high.

2. Ventricular quiescence: Ventricular muscle completely loses its contractile activity and is at rest. The ECG shows a straight line or only atrial waves, which usually appear after a period of cardiac arrest (such as 3 ~ 5 minutes).

3. ECG-mechanical separation: this situation is also a slow and ineffective ventricular autonomic rhythm. Ventricular muscles can contract slowly and weakly intermittently. Electrocardiogram (ECG) is characterized by QRS complex which appears intermittently and widens gradually, and the frequency is mostly below 20-30 beats/min. Because the heart has no effective blood pumping function, there is no sound in auscultation, and the peripheral artery can't feel the pulse. This type is mostly the result of severe myocardial injury, and finally it ends in ventricular quiescence, which makes resuscitation difficult.