7 lines (6 with data), 255 Bytes

e138b 0 128 0 10:45:00 18/08/1988
# Start time=10:45
# First beat=10:45:00.648
# <age-range>: 60-64, <sex>: Female, <medication>: Encainide
# <RR-low-limit(sec)>: 0.492,  <RR-high-limit(sec)>: 0.906
# Note: reel-to-reel recording, not flutter-compensated