Table 3.

Acute success of 28 mm cryoballoon in achieving pulmonary venous isolation

Targeted veins	Isolated with cryoballoon alone	Mean trough temperature when isolation achieved (°C)	Mean trough temperature when isolation not achieved (°C)	p
LUPV	83%	−49.4±6.5	−46.0±4.7	NS
LLPV	95%	−45.5±7.5	−40.7±4.9	<0.01
RUPV	85%	−49.1±5.4	−45.6±7.9	0.03
RLPV	68%	−42.1±6.9	−38.4±4.5	<0.01
All PV	83%	−46.6±7.3	−41.0±7.2	0.02
All Patients	40%

LLPV, left lower pulmonary vein; LUPV, left upper pulmonary vein; RLPV, right lower pulmonary vein; RUPV, right upper pulmonary vein.