The last recorded current cardiac events and event markers preceding {HEAD ~ a detection} of {TAIL ~ the ventricular pause} are preserved 
of
The last recorded current cardiac events and event markers preceding { HEAD ~ a detection } of { TAIL ~ the ventricular pause } are preserved
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH