class EcgSegment(IntEnum):
"""ECG Segment labels"""
background = 0
p_wave = 1
qrs_complex = 2
t_wave = 3
u_wave = 4
pr_segment = 11 # End of P-wave to start of QRS
st_segment = 12 # End of QRS to start of T-wave
tp_segment = 13 # End of T-wave to start of P-wave
tp_overlap = 14 # T-on-P