7 lines (6 with data), 254 Bytes

m091b 0 128 0 15:00:00 25/10/1990
# Start time=15:00
# First beat=15:06:23.750
# <age-range>: 70-74, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.523,  <RR-high-limit(sec)>: 0.882
# Note: reel-to-reel recording, not flutter-compensated