{TAIL ~ Automatic adjustment} of {HEAD ~ detection rate threshold} in an implantable antitachycardia therapy device 
{ TAIL ~ Automatic adjustment } of { HEAD ~ detection rate threshold } in an implantable antitachycardia therapy device
TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH