According to researcher Mary Carol Day, “A vibrotactile alarm provided by the implanted device has two major advantages. First, the implanted device cannot be left behind like a portable device. “Second, its alarm is more likely to be felt than an auditory alarm is to be heard even by the patient wearing heavy clothing, or is in a noisy environment.”
There are two levels of alarm urgency, one where a high-priority alarm will indicate that you might potentially suffer from a heart attack and should dial 911 immediately, while the other is a low-priority alarm which warns the patient to visit a doctor within the next 48 hours. Similar in size to a pacemaker, the AngelMed Guardian will be located in the upper left chest along with an external device that looks like a pager, where the latter’s job is to alert you via an auditory alarm and a flashing red or yellow warning light.