7 lines (6 with data), 253 Bytes

f052b 0 128 0 9:00:00 28/09/1987
# Start time=09:00
# First beat=09:00:24.898
# <age-range>: 60-64, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.507,  <RR-high-limit(sec)>: 1.085
# Note: reel-to-reel recording, not flutter-compensated