A person suffering cardiac arrest is at risk of death as their blood is no longer circulating. Some studies have shown that patients' survival rates can increase by a factor of 3 when high-quality CPR is administered. But the quality of CPR is important.
Getting the depth of chest compressions right is one measure of quality. And a new gadget from Philips helps first aiders get it right, by giving physical feedback to let them know when the right depth has been reached. For an adult, that is around 4 centimetres, and for a child around 2.5cm.
The CPR coach is a pad placed over the patient's chest that contains accelerometers to monitor compression depth. When the correct depth has been reached, the device vibrates to warn the rescuer to stop. This can be combined with audio coaching, in the form of rhythmic beeps for a rescuer to follow.
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