In one embodiment, {HEAD ~ therapy circuit} 228 delivers cardiac electrical stimulation pulses such as pacing and {TAIL ~ cardioversion/defibrillation pulses} 
In one embodiment , { HEAD ~ therapy circuit } 228 delivers cardiac electrical stimulation pulses such as pacing and { TAIL ~ cardioversion / defibrillation pulses }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL