7 lines (6 with data), 253 Bytes

m073b 0 128 0 14:25:00 14/10/1989
# Start time=14:25
# First beat=14:45:11.601
# <age-range>: 55-59, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.554,  <RR-high-limit(sec)>: 1.25
# Note: reel-to-reel recording, not flutter-compensated