7 lines (6 with data), 254 Bytes

f142b 0 128 0 11:00:00 03/09/1987
# Start time=11:00
# First beat=11:38:21.093
# <age-range>: 50-54, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.554,  <RR-high-limit(sec)>: 1.531
# Note: reel-to-reel recording, not flutter-compensated