IP ratings are essential for determining how well Automated External Defibrillators (AEDs) are protected against dust, dirt, and water intrusion.

These ratings consist of two digits:

The first (0-6) measures protection against solid objects.

The second (0-9K) indicates resistance to water.

For instance, an AED with an IP67 rating is completely dust-tight and can withstand immersion in water, making it ideal for use in various environments, including those prone to moisture or dust exposure.

When choosing an AED, a higher IP rating suggests better durability and reliability, crucial factors for ensuring the device’s effectiveness in emergencies.

The battery life of an AED refers to the duration for which the device can remain powered and ready for use on a single charge or battery unit. This lifespan can vary significantly depending on the model and manufacturer, with some batteries lasting up to five years or more under optimal conditions. Factors affecting battery life include the type of battery (lithium-ion, lithium manganese dioxide, etc.), the frequency of device maintenance checks, and the usage rate, including both actual emergency use and regular self-tests performed by the AED.

Manufacturers typically provide specific guidelines regarding battery replacement intervals. It is crucial for AED owners to adhere to these recommendations to ensure that the device remains functional at all times. Some modern AEDs come equipped with built-in features that alert users when the battery level is low or nearing its end-of-life, facilitating timely replacements.

Shelf life, on the other hand, pertains to the period during which the AED’s battery maintains its efficacy while not in use, essentially how long it can be stored before needing to be activated or replaced. Just like with battery life, the shelf life is influenced by the type of battery technology used in the defibrillator, storage conditions, and the specific design and features of the AED model.

An important aspect of managing the shelf life of AED batteries is proper storage. Batteries should be kept in accordance with the manufacturer’s recommendations, usually in a cool, dry place away from direct sunlight to prevent degradation of their chemical components.

Semi-automatic defibrillators require human intervention to deliver the shock. After the device analyses the heart’s rhythm and determines that a shock is necessary, it instructs the rescuer to press a button to administer the shock. This type of defibrillator allows for a final manual check to ensure that nobody is touching the patient and that it is safe to deliver the shock, thereby reducing the risk of accidental injury to others.

Automatic defibrillators, on the other hand, do not require human intervention to deliver the shock. Once the device analyses the heart’s rhythm and decides a shock is needed, it automatically delivers the shock without any input from the user. This feature eliminates the need for the rescuer to make the decision to press the shock button, which can be beneficial in high-stress situations or when the rescuer hesitates or is untrained.