The lead 162 carries {HEAD ~ pacing and sensing electrodes} 172, 174, for sensing ventricular depolarizations and for pacing {TAIL ~ the heart} 
The lead 162 carries { HEAD ~ pacing and sensing electrodes } 172 , 174 , for sensing ventricular depolarizations and for pacing { TAIL ~ the heart }
OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL