7 lines (6 with data), 259 Bytes

e251b 0 128 0 10:00:00 09/01/1989
# Start time=10:00
# First beat=10:08:16.562
# <age-range>: 55-59, <sex>: Female, <medication>: Encainide
# <RR-low-limit(sec)>: 0.515,  <RR-high-limit(sec)>: 1.281
# Note: recording with a timing signal, flutter-compensated