7 lines (6 with data), 253 Bytes

e191b 0 128 0 11:15:00 23/06/1987
# Start time=11:15
# First beat=11:15:00.148
# <age-range>: 45-49, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.429,  <RR-high-limit(sec)>: 0.765
# Note: reel-to-reel recording, not flutter-compensated