A selected branch of the coronary sinus is accessed with the distal tip and {HEAD ~ the distal tip} of {TAIL ~ the lead} is seated in the selected branch of the coronary sinus 
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A selected branch of the coronary sinus is accessed with the distal tip and { HEAD ~ the distal tip } of { TAIL ~ the lead } is seated in the selected branch of the coronary sinus
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH