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