7 lines (6 with data), 253 Bytes

e153b 0 128 0 14:30:00 05/12/1988
# Start time=14:30
# First beat=14:52:58.359
# <age-range>: 70-74, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.671,  <RR-high-limit(sec)>: 1.484
# Note: reel-to-reel recording, not flutter-compensated