7 lines (6 with data), 253 Bytes

e012b 0 128 0 11:00:00 23/07/1987
# Start time=11:00
# First beat=11:05:36.875
# <age-range>: 55-59, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.476,  <RR-high-limit(sec)>: 1.023
# Note: reel-to-reel recording, not flutter-compensated