7 lines (6 with data), 253 Bytes

e230b 0 128 0 10:10:00 25/11/1987
# Start time=10:10
# First beat=10:34:29.539
# <age-range>: 70-74, <sex>: Male, <medication>: Encainide
# <RR-low-limit(sec)>: 0.617,  <RR-high-limit(sec)>: 1.273
# Note: reel-to-reel recording, not flutter-compensated