7 lines (6 with data), 259 Bytes

e286b 0 128 0 14:10:00 26/03/1988
# Start time=14:10
# First beat=14:18:25.757
# <age-range>: 65-69, <sex>: Female, <medication>: Encainide
# <RR-low-limit(sec)>: 0.562,  <RR-high-limit(sec)>: 1.132
# Note: recording with a timing signal, flutter-compensated