7 lines (6 with data), 258 Bytes

m043b 0 128 0 14:45:00 08/03/1991
# Start time=14:45
# First beat=14:48:50.906
# <age-range>: 65-69, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.562,  <RR-high-limit(sec)>: 1.257
# Note: recording with a timing signal, flutter-compensated