Cardiac arrest is the leading cause of natural death in the U.S., with 95% of victims dying before reaching a hospital. An AED (Automated External Defibrillator) can significantly increase survival chances by delivering an electric shock to restore normal heart rhythm. Here’s how to use it:
Recognize Cardiac Arrest
Before using an AED, it’s crucial to recognize the signs of cardiac arrest. Cardiac arrest occurs when the heart suddenly stops beating effectively, often due to ventricular fibrillation or ventricular tachycardia. These conditions cause the heart to quiver ineffectively instead of pumping blood properly. The first step in responding to a cardiac arrest is to check for responsiveness and breathing. If the person is unresponsive and not breathing normally, call emergency services immediately. This step is critical as it initiates the emergency response and ensures medical help is on the way.
Retrieve an AED
Once you’ve called emergency services, retrieve an AED. AEDs are commonly found in public places, schools, and businesses. They are designed for laypeople to use, making them accessible to anyone trained in their operation. Upon locating an AED, bring it to the patient as quickly as possible. Most AEDs are equipped with a carrying handle and can be easily transported. It’s important to note that AEDs are battery-powered and require regular maintenance to ensure they are operational when needed.
Follow AED Prompts
Once you have the AED, turn it on and follow the device’s prompts. The AED provides visual, verbal, and text-based instructions to guide you through the process. The first step is to place the electrode pads on the patient’s bare chest. The AED will typically display a diagram showing the correct placement of the pads. It’s important to ensure the patient’s chest is dry and free of any metal objects before attaching the pads. The AED will then analyze the heart rhythm. This process usually takes about 15 seconds. If the AED detects ventricular fibrillation or ventricular tachycardia, it will prompt you to press the shock button. If the AED does not detect a shockable rhythm, it will instruct you to continue performing CPR.
Deliver a Shock if Advised
If the AED advises a shock, ensure no one is touching the patient. Press the shock button as instructed. The shock delivered by the AED is designed to stop the chaotic heart rhythm and allow the heart to restart in a normal rhythm. After delivering the shock, the AED will instruct you to begin CPR immediately. It’s important to follow the AED’s instructions carefully, as it will guide you through the process of delivering subsequent shocks if necessary.
Perform CPR if Needed
If the AED does not advise a shock, immediately begin high-quality CPR. CPR involves performing 30 chest compressions followed by 2 rescue breaths. Chest compressions should be performed at a rate of 100 to 120 compressions per minute, with a depth of about 2 inches for adults. The goal of CPR is to maintain blood flow to vital organs until the heart can be restarted. Combining CPR with rapid defibrillation doubles survival rates compared to CPR alone.
Common Mistakes to Avoid
- Delaying the use of an AED: Every minute of delay in defibrillation decreases the chance of survival by 7-10%. It’s crucial to use the AED as soon as it’s available.
- Failing to check the patient’s responsiveness and breathing before using the AED: This step is essential to ensure the patient is in cardiac arrest and not suffering from another condition.
- Not ensuring the patient’s chest is dry and free of metal objects before attaching the electrode pads: This can interfere with the AED’s ability to deliver a shock effectively.
- Failing to follow the AED’s prompts: The AED is designed to guide you through the process. Following its instructions carefully can significantly increase the chances of a successful outcome.
Practical Tips for Getting Started
- Training in both CPR and AED use is strongly recommended. Many organizations offer training courses that can provide you with the skills and confidence needed to use an AED effectively.
- Regularly check the AED’s battery and electrode pads to ensure they are in good working condition. AEDs require regular maintenance to ensure they are operational when needed.
- Encourage bystanders to assist in the response. Having multiple people present can help with tasks such as calling emergency services, retrieving the AED, and performing CPR.
In summary, using an AED is a critical skill in responding to cardiac arrest. By recognizing the signs of cardiac arrest, retrieving an AED, following the device’s prompts, delivering a shock if advised, and performing CPR if needed, you can significantly increase the chances of survival for the patient. Training in both CPR and AED use is strongly recommended to ensure you are prepared to respond effectively in an emergency.