7 lines (6 with data), 253 Bytes

e123b 0 128 0 13:00:00 13/01/1988
# Start time=13:00
# First beat=13:22:48.554
# <age-range>: 55-59, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.656,  <RR-high-limit(sec)>: 1.117
# Note: reel-to-reel recording, not flutter-compensated