Table 1.

Baseline clinical data in patients ≥60 and those <60 years of age referred for electrophysiological evaluation in the setting of PS

	Patients ≥60 (N=72)	Patients <60 (N=889)	p Value
Age (years)	68.5±6	30.5±14	NA
Age range	5–59 years	60–89 years
Male gender	37 (51%)	557 (63%)	0.06
Heart disease (total)	14 (19%)	60 (6.7%)	<0.001
Congenital heart disease	0	23 (2.6%)	0.17
Symptoms attributed to the PS	58 (81%)	561 (63%)	0.003
Syncope	12 (17%)	98 (11%)	0.15
History of AVRT	27 (37.5%)	377 (42%)	0.4
History of AF	6 (8%)	25 (3%)	0.01
History of poorly tolerated tachycardia	13 (18%)	63 (7%)	<0.001
AP location
Left lateral	32 (44%)	315 (35.4%)	0.13
Posteroseptal	38 (53%)	408 (46%)	0.26
Anteroseptal	1 (1.4%)	89 (10%)	0.02
Right lateral	0	49 (5.5%)	0.04
Mahaim	1 (1.4%)	20 (2%)	0.6
Multiple APs	0	7 (0.8%)	0.4
Unapparent PS	9 (12.5%)	88 (9.9%)	0.5

AF, atrial fibrillation; AP, accessory pathway; AVRT, atrioventricular re-entrant tachycardia; NA, not applicable; PS, pre-excitation syndrome.