Table 2.

Assessment of angiography images.

	AF (n = 183)	Non-AF (n = 107)	p Value
Undetectable VOM on venography in all views, n (%)	15 (8.2)	17 (15.9)	0.044 *
Detectable PLSVA, n (%)	2 (1.1)	2 (1.9)	0.584
Number of branches at VOM ostium
Type I	143 (78.1)	79 (73.8)	0.477
Type II	25 (13.7)	11 (10.3)	0.477
RAO
Undetectable VOM on venography in RAO	20 (10.9)	23 (21.5)	0.015 *
VOM-CS angle, °	45.3 ± 20.5	41.4 ± 18.5	0.237
VOM ostium diameter, mm	1.9 ± 0.9	1.7 ± 0.7	0.015 *
CSo diameter, mm	12.8 ± 4.1	11.4 ± 3.7	0.016 *
CS diameter at VOM level, mm	9.1 ± 3.1	8.2 ± 2.9	0.028 *
LAO
Undetectable VOM on venography in LAO	53 (29.0)	45 (42.1)	0.023 *
VOM-CS angle, °	144.2 ± 36.8	156.0 ± 12.6	0.036 *
VOM-to-CSo distance, mm	37.8 ± 15.6	36.8 ± 13.1	0.684
VOM ostium diameter, mm	1.7 ± 1.0	1.7 ± 0.7	0.664
CSo diameter, mm	11.7 ± 5.8	10.1 ± 5.4	0.022 *
CS diameter at VOM level, mm	7.2 ± 2.9	6.5 ± 2.0	0.047 *
LAO cranial
Undetectable VOM on venography in LAO + Cranial	39 (21.3)	27 (25.2)	0.442
VOM-CS angle, °	127.9 ± 57.5	109.2 ± 70.7	0.087
VOM-to-CSo distance, mm	39.6 ± 16.6	37.8 ± 13.8	0.419
VOM ostium diameter, mm	1.9 ± 1.1	1.6 ± 0.8	0.069
CSo diameter, mm	13.1 ± 5.0	12.4 ± 4.8	0.263
CS diameter at VOM level, mm	8.1 ± 3.2	7.4 ± 2.4	0.141

AF = atrial fibrillation; CS = coronary sinus; CSo = coronary sinus ostium; LAO = left anterior oblique; PLSVA = persistent left superior vena cava; RAO = right anterior oblique; VOM = vein of Marshall. Other abbreviations as Table 1. * Variables with p value < 0.05.