Battery supply ground is in common with one of the defibrillator leads, and {HEAD ~ conventional pacers} provide {TAIL ~ pacer pulses} with respect to battery ground 
provide
Battery supply ground is in common with one of the defibrillator leads , and { HEAD ~ conventional pacers } provide { TAIL ~ pacer pulses } with respect to battery ground
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 OTH OTH OTH OTH OTH