7 lines (6 with data), 251 Bytes

e264b 0 128 0 9:30:00 13/04/1988
# Start time=09:30
# First beat=09:30:00.429
# <age-range>: 60-64, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.46,  <RR-high-limit(sec)>: 0.882
# Note: reel-to-reel recording, not flutter-compensated