Testing an AED machine primarily involves conducting regular visual readiness checks and ensuring its automated self-tests are functioning correctly. These essential steps confirm the device is ready to save a life in an emergency.
Why Regular AED Checks Are Critical
An Automated External Defibrillator (AED) is a vital piece of emergency equipment designed to deliver an electric shock to restore a normal heart rhythm during sudden cardiac arrest. Just like any life-saving device, it must be in optimal working condition at all times. Regular checks prevent deployment failures, ensuring the AED is ready when seconds count.
Daily and Weekly Readiness Checks
Most AED manufacturers recommend routine visual inspections, often on a daily or weekly basis. These checks are quick and simple but crucial for maintaining readiness.
- Status Indicator Light: Verify the AED's status indicator light. It should typically be flashing green or display a "ready" symbol, indicating the device has passed its internal self-tests and is ready for use. Any other color or absence of light usually signals a problem.
- AED Pads: Confirm that the AED pads are properly plugged into the device. Check the expiration date on the pad packaging – expired pads must be replaced immediately. Also, ensure the pad packaging is sealed and undamaged.
- Battery Status: Examine the battery indicator. It should show a full or adequate charge. Note the battery's expiration date, as batteries also need periodic replacement even if they appear charged.
- Physical Condition: Visually inspect the AED for any signs of damage, cracks, or missing components. The device should appear undamaged and ready for immediate deployment.
- Warning Notifications: Listen for any chirping, beeping, or warning notifications. These sounds or on-screen messages are typically indicators of an issue (e.g., low battery, expired pads, internal fault) that requires immediate attention.
- Rescue Kit: Ensure any accompanying rescue kit (containing items like scissors, gloves, a razor, and a CPR mask) is complete and accessible.
Automated Self-Tests
Modern AEDs are designed with built-in diagnostic systems that perform automatic self-tests. These tests typically run daily, weekly, or monthly, checking critical components such as the battery, internal circuitry, and software.
- Internal Diagnostics: The AED's internal system automatically checks its hardware and software to ensure proper functionality.
- Readiness Indicator: The results of these self-tests are typically communicated through the AED's status indicator light. A green flashing light usually means all self-tests have passed successfully.
Scheduled Maintenance and Replacements
Beyond routine visual checks, AEDs require periodic maintenance and component replacement:
- Pad Expiration: AED pads have a shelf life, usually 2-5 years. Always replace them before their expiration date.
- Battery Expiration: AED batteries also have an expiration date and limited shock capacity. They must be replaced according to the manufacturer's recommendations, even if the battery indicator appears full.
- Software Updates: Some AED models may require occasional software updates from the manufacturer to ensure optimal performance and compliance with new guidelines.
- Professional Servicing: While not typically required annually for all AEDs, some organizations opt for professional servicing to ensure comprehensive checks and compliance. Consult your AED manufacturer's guidelines for specific recommendations.
Essential Components to Check
To ensure your AED is always rescue-ready, focus on these critical components during your inspections:
| Component | Check Point | Action if Issue Found |
|---|---|---|
| Status Indicator | Flashing green / "Ready" symbol | Contact supplier/manufacturer |
| Electrode Pads | Plugged in, unexpired, sealed, undamaged | Replace expired/damaged pads |
| Battery | Adequate charge, unexpired | Replace expired/low battery |
| Device Integrity | No physical damage (cracks, missing parts) | Contact supplier/manufacturer |
| Warning Alarms | No chirping, beeping, or error messages | Address issue per manufacturer's guide |
| Rescue Kit (Optional) | Complete (scissors, gloves, razor, mask) | Restock missing items |
Documenting Your Checks
Maintaining a log of your AED checks is good practice. This log should include:
- Date and time of inspection
- Name of inspector
- Status of the indicator light
- Battery and pad expiration dates
- Any issues found and actions taken
Regular and diligent testing of an AED machine is not just a recommendation; it's a responsibility that ensures this life-saving device is always prepared to make a difference when an emergency strikes. For detailed instructions specific to your AED model, always refer to the manufacturer's user manual. You can also find general guidance from organizations like the American Heart Association.
