7 lines (6 with data), 251 Bytes

m154b 0 128 0 11:06:00 08/10/1990
# Start time=11:06
# First beat=11:41:26.820
# <age-range>: 75-79, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.5,  <RR-high-limit(sec)>: 1.14
# Note: reel-to-reel recording, not flutter-compensated