7 lines (6 with data), 253 Bytes

m222b 0 128 0 9:00:00 04/06/1990
# Start time=09:00
# First beat=09:02:50.195
# <age-range>: 55-59, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.546,  <RR-high-limit(sec)>: 1.445
# Note: reel-to-reel recording, not flutter-compensated