7 lines (6 with data), 253 Bytes

m202b 0 128 0 9:26:00 20/10/1988
# Start time=09:26
# First beat=09:33:03.359
# <age-range>: 55-59, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.476,  <RR-high-limit(sec)>: 0.976
# Note: reel-to-reel recording, not flutter-compensated