7 lines (6 with data), 260 Bytes

e068b 0 128 0 8:46:00 24/09/1987
# Start time=08:46
# First beat=08:51:21.781
# <age-range>: 65-69, <sex>: Female, <medication>: Encainide
# <RR-low-limit(sec)>: no-info,  <RR-high-limit(sec)>: 1.234
# Note: recording with a timing signal, flutter-compensated