Table 1.

AngelMed Guardian^® System Alarm Types

Alert Type	Qualifying Event Category	IMD Function	EXD Function	Data Storage
High Priority Alarms
Emergency alerts (Patient calls 911 for prompt arrival at a medical facility	3 successive 10-second electrogram segments with each segment at least six out of eight beats with ST shifts that exceed the detection threshold while the heart rate is within normal range	Vibrates	Beeps in a synchronized 3-2-3-2 pattern, and flashes a red light	24 hrs before alarm through 8 hrs after alarm
Low Priority Alarms
See Doctor alerts	(a) Abnormal heart rates (Tachycardia and bradycardia) (b) Persistent irregular rhythms (c) Loss of signal (Lead detachment/low battery/general malfunction)	Vibrates	Beeps once after each 7 second interval, and flashes a yellow light	24 hrs before alarm and at time of alarm
None	Save data in the See Doctor manner but do not alert the patient	N/A	N/A	24 hrs before alarm and at time of alarm
Ignore	Neither save the data nor alert the patient	N/A	N/A	N/A