7 lines (6 with data), 258 Bytes

m172b 0 128 0 10:38:00 12/04/1990
# Start time=10:38
# First beat=10:43:27.093
# <age-range>: 60-64, <sex>: Male, <medication>: Moricizine
# <RR-low-limit(sec)>: 0.554,  <RR-high-limit(sec)>: 1.015
# Note: recording with a timing signal, flutter-compensated