{HEAD ~ An antitachycardia stimulation device} that automatically adjusts {TAIL ~ its detection rate threshold} as a function of a sensed physiological parameter indicative of cardiac rate 
{ HEAD ~ An antitachycardia stimulation device } that automatically adjusts { TAIL ~ its detection rate threshold } as a function of a sensed physiological parameter indicative of cardiac rate
HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH