7 lines (6 with data), 258 Bytes

e273b 0 128 0 10:05:00 29/03/1989
# Start time=10:05
# First beat=10:17:48.328
# <age-range>: 60-64, <sex>: Female, <medication>: Encainide
# <RR-low-limit(sec)>: 0.734,  <RR-high-limit(sec)>: 1.21
# Note: recording with a timing signal, flutter-compensated