“Many heart attack victims do not have classic early warning signs like intense chest pain, or sweating, and experience nothing more than mild discomfort. Others ignore the signs or recognise them too late. The result is it is often hours before they seek medical help. For some, that delay is fatal. The inventors of the AngelMed Guardian System hope the device will cut the death rate from heart attacks by a quarter, by alerting the wearer as soon as possible.” However, “Due to expense and the fact surgery is needed to implant it, they are likely to be reserved for those who have either already had a heart attack or are judged to be at extremely high risk of a first one.” Heart attack alarm ‘will save lives’ Telegraph. Heads-up thanks to Toni Bunting.