With reference to FIG 1, initially , {HEAD ~ the base frequency} is initialized with {TAIL ~ a value} that authorizes a ventricular pause of reasonable duration, for example, a three seconds pause  
is initialized with
With reference to FIG 1 , initially , { HEAD ~ the base frequency } is initialized with { TAIL ~ a value } that authorizes a ventricular pause of reasonable duration , for example , a three seconds pause
OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH