7 lines (6 with data), 253 Bytes

f225b 0 128 0 13:15:00 18/04/1988
# Start time=13:15
# First beat=13:15:00.531
# <age-range>: 70-74, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.632,  <RR-high-limit(sec)>: 1.14
# Note: reel-to-reel recording, not flutter-compensated