Spatial correction improves accuracy of catheter positioning during ablation of premature ventricular contractions: differences between ventricular outflow tracts and other localizations

Table 3 Subanalysis of 3 anatomically complete hybrid activation maps

Location	Number of points	Median displacement (mm)	IQR (mm)	p-value
Total	1310	2.9	1.9–4.1	–
Right ventricle	938	3.0	1.9–4.2	0.13
Free wall	98	3.3	2.0–4.3	0.04 *
Inferior wall	242	2.9	2.1–3.6	0.47
Septum	492	2.9	2.0–4.5,	0.15
RVOT	106	3.0	1.4–4.3	0.32
Left ventricle	372	2.8	1.9–3.9	0.13
Free wall	49	3.9	2.9–5.2	< 0.0001***
Inferior wall	89	2.4	1.7–3.6	0.006**
Septum	207	2.7	1.8–3.8	0.007**
LVOT	27	3.6	2.1–5.8	0.07
Outflow-tract	133	3.3	1.6–4.4	0.96
Ventricle	1139	2.9	1.9–4.0	0.14

IQR: interquartile range, RVOT/LVOT: right/left ventricular outflow tract. Two-sided p-values were calculated via Mann–Whitney-U-test
Findings that reached statistical significance are marked with asterisks (*p ≤ 0.05; **p ≤ 0.01; ***p ≤ 0.001)

ISSN: 1471-2261