What Is Defibrillators?
Defibrillators are devices that restore a normal heart rhythm by sending an electrical impulse or shock to the heart. They are used to prevent or correct arrhythmias when the heart rate is uneven or too slow or too fast. Defibrillators can also restore the heart rate if the heart suddenly stops.
Different types of defibrillators work in different ways. Automated Outdoor Defibrillators (AEDs) have been developed in many public places to save the lives of people facing sudden cardiac arrest. Even untrained spectators can use these devices in an emergency.
Other defibrillators can prevent sudden death in people at high risk for malignant arrhythmia. These include implantable cardioverter defibrillators (ICDs), which are surgically placed inside your body, and portable cardioverter defibrillators (WCDs), which are worn over the body. Getting used to living with a defibrillator takes time and effort, and it is important to be aware of the potential risks and problems.
Defibrillation is often an important step in cardiopulmonary resuscitation (CPR). CPR is an algorithm-based intervention aimed at restoring heart and lung function. Defibrillation is only indicated in certain types of cardiac dysrhythmia, particularly ventricular fibrillation (VF) and pulseless ventricular tachycardia.
The defibrillator is the newer and more compliant artery, like an occasional or dynamic electrolysis bolus (AEP). Defibrillation is not the only indication that the patient is conscientious or having a poultice. These choices electrify poorly applied by causing a dysrhythmic dance, all quenching ventricular fibrillation.
Types of defibrillators
- Manual external defibrillator
- Automated external defibrillator (AED)
- Advanced Life Support Units
- Wearable Cardioverter Defibrillators
Manual external defibrillator
More experience and training are needed to operate these defibrillators effectively. Therefore, they are common only in hospitals and in some ambulances with efficient hands. With the ECG, the trained provider determines the heart rate, then psychologically determines the pressure and timing of the shock to the patient’s chest via external paddles.
Automated external defibrillator (AED)
These are defibrillators that use computer technology, making it easy to analyze the heart rhythm and effectively determine if the rhythm is shocking. They can be found in medical facilities, government offices, airports, hotels, sports stadiums, and schools.
Advanced Life Support Units
Advanced Life Support (ALS) units are commonly used in the healthcare context. For example, these are common in ambulances and hospitals. Finally, these devices allow the medical team to monitor a person’s heart rate. If necessary, they can provide an electric shock. Most ALS units are also equipped with an AED function. This mode uses the computer to make shock recommendations based on the individual’s condition.
Other common characteristics are the ability to monitor oxygen, carbon dioxide, blood pressure, and temperature. Some units are also equipped with a heart attack warning system. While some models use paddles, electrodes are generally preferred because they are much safer for the rescuer. Not only that, the more evenly distributed the shock, the more effective it will be.
Wearable Cardioverter Defibrillators
The portable cardioverter defibrillator (WCD) is a medical device used by people at risk of heart failure. For example, they are often prescribed for people who have had a recent heart attack or bypass surgery. People with circulatory disorders may also need the device.
Non-invasive WCDs have two different components: monitor and shirt, the latter of which detects and treats abnormal heart rhythms. A person gets under clothing while the monitor is moved around the waist. Properly covered, it will withstand a lot of adverse conditions. It delivers an electric shock every time a malignant rhythm is detected. Highly effective, it has a 98% first shock success rate.
Who can use a defibrillator?
You don’t need the training to use a defibrillator; anyone can use it. There are clear instructions on how to place the defibrillation pads. Assesses your heart rate and prompts you to shock only if necessary. You cannot accidentally shock, the defibrillator only allows you to shock if necessary.
In a recent survey, a third said they would be confident enough to act if they saw someone having a heart attack. With more CPR training and more awareness, we can change that.
Mechanism of action
The exact mechanism of defibrillation is not well understood. One theory is that successful defibrillation affects most of the heart, causing heart muscle failure to maintain the arrhythmia. Recent mathematical models of defibrillation provide new information on the response of heart tissue to violent electric shocks.