The intraosseous (IO) route (that is, through the bone marrow) is used to access the venous system when intravenous access is not possible, often in emergency situations, including cardiopulmonary resuscitation. IO access is most commonly achieved using a battery-powered injector.

As the battery is sealed within the device and cannot be recharged or replaced, the first sign a battery may be depleted is in some circumstances when it does not work.

This alert asks providers to replace any battery-powered IO devices that do not have a battery power indicator light with ones with a display that shows how much power is remaining. Where IO devices with a battery power indicator are used, providers are asked to take steps to embed regular checks of these devices to ensure sufficient battery power remains so the devices are always ready and available.