The present invention relates to implantable medical devices and methods, and more particularly to an implantable antitachycardia device, e.g., an antitachycardia pacemaker or defibrillator cardioverter, that automatically adjusts its detection rate threshold as {HEAD ~ a function} of {TAIL ~ the sensed cardiac rate} 
The present invention relates to implantable medical devices and methods , and more particularly to an implantable antitachycardia device , e.g. , an antitachycardia pacemaker or defibrillator cardioverter , that automatically adjusts its detection rate threshold as { HEAD ~ a function } of { TAIL ~ the sensed cardiac rate }
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL