CPR

Introduction CPR (car?dio pulmonary resuscitation) is a technique that combines artificial respiration and extracardiac massage for first aid when the breathing is terminated and the heartbeat is paused.

Cause

Respiratory termination, heartbeat pauses caused by drowning, heart disease, high blood pressure, car accidents, electric shock, drug poisoning, gas poisoning, foreign body blockage of the respiratory tract, etc., can be used to maintain brain cells and organ tissue without necrosis before the doctor arrives. .

an examination

Related inspection

Electrocardiogram two-dimensional echocardiography Doppler echocardiography

Electrocardiogram

There are three types of electrocardiograms performed during cardiac arrest: 1 ventricular fibrillation is the most common, accounting for 77% to 85%; the QRS wave disappears, replaced by regular or irregular ventricular flutter or tremor; 2 ventricular pause : 5%, because the ventricular electrical activity stops, the ECG is in a straight line or there is still atrial wave; 3 electro-mechanical separation: about 15%, showing a slow, wide, low amplitude QRS wave, but does not produce an effective ventricle Mechanical contraction. It is generally believed that the success rate of ventricular pause and electromechanical separation recovery is low.

2. EEG

Brain waves are low.

Differential diagnosis

The occurrence of sudden cardiac death has a rhythmic change in the morning incidence. Increasing incidence in the morning may be related to increased physical and mental activity at this time. The increased risk of myocardial ischemia, ventricular fibrillation and thrombosis is a possible cause of sudden cardiac death in the morning. The patient may have no symptoms before sudden death, or even a history of organic heart disease. About half of the sudden death patients often have aura symptoms such as chest pain, palpitations, fear, progressive fatigue and weakness in 2 weeks. Cardiac loss is effectively contracted for 4 to 15 s, that is, clinical signs appear. The main ones are: sudden unconsciousness or convulsions, rapid and shallow breathing, slowing or stopping, aortic pulsation disappears, heart sounds disappear, pupils are dilated, skin becomes cyanotic, nerve reflexes disappear, and some patients die quietly during sleep. Electrocardiogram examination revealed that the PQRS wave disappeared and the ventricular fibrillation waveforms of varying thickness were present, or the electrocardiogram showed a slow deformed QRS wave, but did not produce effective myocardial mechanical contraction. The ventricular pacing ECG was straight or only atrial wave.

Electrocardiogram

There are three types of electrocardiograms performed during cardiac arrest: 1 ventricular fibrillation is the most common, accounting for 77% to 85%; the QRS wave disappears, replaced by regular or irregular ventricular flutter or tremor; 2 ventricular pause : 5%, because the ventricular electrical activity stops, the ECG is in a straight line or there is still atrial wave; 3 electro-mechanical separation: about 15%, showing a slow, wide, low amplitude QRS wave, but does not produce an effective ventricle Mechanical contraction. It is generally believed that the success rate of ventricular pause and electromechanical separation recovery is low.

2. EEG

Brain waves are low.

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