Feasibility and safety of cryoballoon ablation for the treatment of atrial fibrillation in patients with congenital heart disease

Table 3 Procedural characteristics

	n = 10
Access to the left atrium, n (%)
Across an atrial septal defect	3 (30.0)
Trans-septal puncture across the native septum	5 (50.0)
Trans-septal puncture across a surgical patch	2 (20.0)
Trans-septal puncture across a percutaneous closure device	0 (0.0)
Cryoballoon size, n (%)
23 mm	4 (40.0)
28 mm	7 (70.0)
Total cryoablation time, s
Left superior pulmonary vein	374 (252-475)
Left inferior pulmonary vein	480 (240-480)
Left common pulmonary vein	480 (480-700)
Right superior pulmonary vein	360 (261-453)
Right inferior pulmonary vein	315 (247-450)
Number of applications
Left superior pulmonary vein	2 (1.5-2.0)
Left inferior pulmonary vein	1 (1.0-2.0)
Left common pulmonary vein	2 (2.0-3.5)
Right superior pulmonary vein	2 (1.25-2.75)
Right inferior pulmonary vein	2 (1.0-2.0)
Minimal temperature reached, oC
Left superior pulmonary vein	-49 (-49, -51)
Left inferior pulmonary vein	-45 (-41, -52)
Left common pulmonary vein	-48 (-46, -54)
Right superior pulmonary vein	-45 (-40, -51)
Right inferior pulmonary vein	-45 (-39, -54)
Total procedural time, min	183.0 (152.5, 224.0)
Total fluoroscopy time, min	33.5 (27.5-43.0)

Continuous variables are expressed as median and interquartile range (25^th-75^th percentile).