Automatic external defibrillator, used when the injured person's pulse stops. However it does not deliver a shock to an injured person who has no heart rate and has a horizontally straight ECG. In short, the use of a defibrillator does not by itself restore the heartbeat of the patient, that is a misrepresentation of many movies and TV programs, but rather, it terminates the fatal arrhythmia (e.g., ventricular fibrillation, ventricular flutter, etc.) by an electric shock, and then restores the heart to beat by re-commissioning the heart through the excitement of the high cardiac pacing point (however, there are some patients who, due to the underlying cardiac disease may not be able to restore the heartbeat after defibrillation, and then the automated external defibrillator will (However, some patients may not be able to recover their heartbeat after defibrillation due to their underlying cardiac disease, in which case the AED will indicate that there is no indication for defibrillation and recommend immediate CPR). So who are the patients for whom an automated external defibrillator is indicated?
1. Ventricular fibrillation (or ventricular flutter).
2. Pulseless ventricular tachycardia.
These two types of patients, like pulseless heart rate, will not have a pulse. In these two types of arrhythmias, the heart muscle moves but is unable to send blood throughout the body efficiently, so it must be corrected urgently with an electric shock. In ventricular fibrillation, the heart's electrical activity is severely disorganized and the ventricles are unable to pump blood effectively. In tachycardia, the heart is beating too fast to pump enough blood efficiently, and usually the tachycardia eventually turns into ventricular fibrillation. If left uncorrected, both arrhythmias can quickly lead to brain damage and death. For every minute of delay, the patient's survival rate is reduced by 10 percent.
Unlike specialized defibrillators, which are designed for use by medical professionals, they cannot diagnose or treat a wide range of arrhythmias other than the two mentioned above, and they do not provide off-site rate regulation for bradycardia.
Automatic external defibrillator precautions
1, in the test defibrillator defibrillation function, the electrodes should be placed on the machine's bracket and then press the two shock button to discharge.
2, do not short the electrodes to discharge, which will make the electrode's metal contact point burned or burned out pitted points.
3, do not take the electrodes out of the holder for open-circuit discharge, when the defibrillator is open-circuit discharged, dangerous high voltage exists on the electrodes, and contact with this high voltage can lead to serious injury or death.
4. Do not touch any metal surfaces on the instrument during the shock. Disconnect other medical electronic devices from the patient during defibrillation discharge, except for devices labeled with defibrillation protection markings.