Differentiation of the right versus left outflow tract ventricular arrhythmias using local activation time at the His bundle electrogram

Table 2 Distinguishing electrophysiological features of ventricular arrhythmias originating from RVOT and LVOT

	Origin of ventricular arrhythmia
	RVOT (n = 24)	LVOT (n = 6)	P value^a
V(RVOT)-V(HB), ms			0.004
Mean ± SD	56.3 ± 15.9	34.2 ± 12.6
Median (range)	58.5 (29–88)	36.0 (13–50)
QRS-V(HB), ms			0.025
Mean ± SD	20.6 ± 16.1	3.8 ± 13.0
Median (range)	22.5 (− 20 to 44)	9.5 (− 18 to 15)

LVOT left ventricular outflow tract, RVOT right ventricular outflow tract, V(HB) V signal at the His bundle region, V(RVOT) V signal at the RVOT region
^aThe independent-samples t test is used to compare the means of two groups

ISSN: 2466-1171