7 lines (6 with data), 252 Bytes

e151b 0 128 0 13:31:00 01/08/1987
# Start time=13:31
# First beat=13:38:18.000
# <age-range>: 60-64, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.57,  <RR-high-limit(sec)>: 1.421
# Note: reel-to-reel recording, not flutter-compensated