Do you know a defibrillator?
A defibrillator is a medical device that uses a strong pulse current to pass through the heart to eliminate arrhythmia and restore sinus rhythm. It is a necessary first-aid equipment in the operating room. For cardiopulmonary resuscitation, defibrillation is one of the most important steps.
When patients have severe tachyarrhythmias, such as atrial flutter, atrial fibrillation, supraventricular or ventricular tachycardia, etc., they often cause hemodynamic disorders of varying degrees. Especially when the patient has ventricular fibrillation, because the ventricle has no overall contraction ability, cardiac ejection and blood circulation are terminated. If rescue is not done in time, the patient will often die due to brain hypoxia for too long.
If a defibrillator is used to control a certain energy current through the heart, certain arrhythmias can be eliminated, and the heart rhythm can be restored to normal, so that the above-mentioned heart disease patients can be rescued and treated [1].
The original defibrillator used industrial alternating current for direct defibrillation. This defibrillator often caused injuries and deaths due to electric shock. Therefore, at present, in addition to the use of alternating current for internal defibrillation (ventricular fibrillation) during heart surgery, it is generally used Direct current defibrillation.
AED
Automatic external defibrillator, also known as automatic external shock device, automatic shock device, automatic defibrillator, cardiac defibrillator and fool shock device, etc., is a portable medical device that can diagnose specific arrhythmias and give electric shocks Defibrillation is a medical device that can be used by non-professionals to rescue patients with cardiac arrest. In cardiac arrest, only within the "golden 4 minutes" of the best rescue time, defibrillation and cardiopulmonary resuscitation with an automatic external defibrillator (AED) is the most effective way to prevent sudden death.
The automatic external defibrillator is a portable, easy-to-operate, and can be used proficiently after a little training. It is a first-aid device specially designed for on-site first aid. In a sense, AED is not only a kind of first-aid device, but also a kind of first-aid device. A new concept of first aid, a concept of effective first aid performed by witnesses at the scene. It is different from the traditional defibrillator, which can be analyzed by the built-in computer and determine whether the patient needs electric defibrillation. During the defibrillation process, the AED's voice prompts and screen animation prompts make the operation easier and easier.
Note: Although AEDs are very convenient to use, most of them are "dumb" machines, but some public defibrillators are not equivalent to the automatic external defibrillators (AED) described in this entry. They are medical defibrillators. It is not allowed to be used by untrained non-professionals. It must be distinguished when using.
