7 lines (6 with data), 253 Bytes

e131b 0 128 0 14:30:00 11/03/1988
# Start time=14:30
# First beat=15:11:30.500
# <age-range>: 65-69, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.601,  <RR-high-limit(sec)>: 1.023
# Note: reel-to-reel recording, not flutter-compensated