7 lines (6 with data), 248 Bytes

f151b 0 128 0 12:00:00 02/08/1987
# Start time=12:00
# First beat=12:12:20.601
# <age-range>: 70-74, <sex>: Male, <medication>: Flecainide
# <RR-low-limit(sec)>: NA,  <RR-high-limit(sec)>: NA
# Note: reel-to-reel recording, not flutter-compensated