The implantable antitachycardia stimulation device includes heart rate detection circuitry and {TAIL ~ antitachycardia therapy circuitry} for applying a specific antitachycardia therapy in the event that the detected heart rate falls within {HEAD ~ at least one tachycardia rate zone} 
The implantable antitachycardia stimulation device includes heart rate detection circuitry and { TAIL ~ antitachycardia therapy circuitry } for applying a specific antitachycardia therapy in the event that the detected heart rate falls within { HEAD ~ at least one tachycardia rate zone }
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