31
His-Purkinje conduction disease
With correction Without correction
S-QRS ≤ wH-QRS with isoelectric
interval
S-QRS ≤ or > H-QRS with isoelectric
interval
Discrete local ventricular electrogram in
HBP lead
Discrete local ventricular electrogram in
HBP lead
Paced QRS < native QRS Paced QRS = native QRS
2 distinct capture thresholds (HBP with
BBB correction, HBP without BBB
correction)
Single capture threshold (HBP with BBB)
S-QRS < H-QRS (usually 0, S-QRS
end
< H-QRS
end
) with or without isoelectric
interval (pseudodelta wave +/−)
S-QRS < H-QRS (usually 0) with or
without isoelectric interval (pseudodelta
wave +/−)
Direct capture of local ventricular
electrogram in HBP lead by stimulus
artifact
Direct capture of local ventricular
electrogram in HBP lead by stimulus
artifact
Paced QRS ≤ native QRS Paced QRS > native QRS
3 distinct capture thresholds (HBP with
BBB correction, HBP without BBB
correction, RV capture)
2 distinct capture thresholds (HBP with
BBB, RV capture)
