7 lines (6 with data), 255 Bytes

m097b 0 128 0 11:20:00 23/03/1990
# Start time=11:20
# First beat=11:20:00.078
# <age-range>: 70-74, <sex>: Female, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.796,  <RR-high-limit(sec)>: 1.32
# Note: reel-to-reel recording, not flutter-compensated