7 lines (6 with data), 253 Bytes

m194b 0 128 0 16:08:00 21/04/1991
# Start time=16:08
# First beat=16:28:08.460
# <age-range>: 45-49, <sex>: Female, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.5,  <RR-high-limit(sec)>: 0.96
# Note: reel-to-reel recording, not flutter-compensated