7 lines (6 with data), 253 Bytes

f205b 0 128 0 14:33:00 20/10/1988
# Start time=14:33
# First beat=14:37:38.921
# <age-range>: 50-54, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.445,  <RR-high-limit(sec)>: 2.07
# Note: reel-to-reel recording, not flutter-compensated