7 lines (6 with data), 259 Bytes

f154b 0 128 0 10:51:00 26/10/1987
# Start time=10:51
# First beat=10:55:27.476
# <age-range>: 70-74, <sex>: Female, <medication>: Flecainide
# <RR-low-limit(sec)>: 0.867,  <RR-high-limit(sec)>: 1.46
# Note: recording with a timing signal, flutter-compensated