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