Table 3:

Regional Electroanatomic Substrate Differences Between High and Low AF-PRS.

Region	Electroanatomic Parameter	High AF-PRS	Low AF-PRS	P value
Posterior	LA bipolar voltage heterogeneity	0.88 (0.18)	0.84 (0.17)	0.4
	Conduction velocity heterogeneity	0.44 (0.19)	0.35 (0.11)	0.01
	Slow & block points%	36 (30)	21 (28)	0.04
	Complex points%	10.1 (11)	6.1 (4.6)	0.03
Anterior	LA bipolar voltage heterogeneity	0.77 (0.16)	0.73 (0.15)	0.4
	Conduction velocity heterogeneity	0.38 (0.2)	0.35 (0.15)	0.4
	Slow & block points%	24 (32)	16 (28)	0.3
	Complex points%	4.8 (7.3)	4.3 (4.5)	0.7
Lateral	LA bipolar voltage heterogeneity	1.01 (0.38)	0.86 (0.22)	0.01
	Conduction velocity heterogeneity	0.51 (0.25)	0.35 (0.16)	0.03
	Slow & block points%	43 (34)	21 (29)	0.004
	Complex points%	12 (12)	8 (9)	0.08
Septal	LA bipolar voltage heterogeneity	0.83 (0.2)	0.82 (0.2)	0.7
	Conduction velocity heterogeneity	0.40 (0.2)	0.35 (0.15)	0.2
	Slow & block points%	28 (28)	18 (27)	0.1
	Complex points%	9.3 (7.8)	6.6 (11)	0.3
Inferior	LA bipolar voltage heterogeneity	0.85 (0.19)	0.8 (0.17)	0.2
	Conduction velocity heterogeneity	0.55 (0.24)	0.35 (0.16)	<0.001
	Slow & block points%	26.6 (26)	14.4 (25.8)	0.03
	Complex points%	9.6 (10.8)	6.7 (7.5)	0.2
Roof	LA bipolar voltage heterogeneity	0.8 (0.16)	0.76 (0.18)	0.4
	Conduction velocity heterogeneity	0.42 (0.18)	0.36 (0.14)	0.1
	Slow & block points%	27 (32)	13 (27)	0.03
	Complex points%	5.2 (6.9)	5.5 (4.7)	0.9