7 lines (6 with data), 253 Bytes

e154b 0 128 0 10:09:00 15/09/1987
# Start time=10:09
# First beat=10:28:10.109
# <age-range>: 65-69, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.523,  <RR-high-limit(sec)>: 1.148
# Note: reel-to-reel recording, not flutter-compensated