Key result
Right superior pulmonary vein isolation with a second-generation cryoballoon produced a median superior vena cava potential conduction delay of 6.0 ms, which correlated with RSPV-SVC distance.
Why the study?
Does pulmonary vein isolation with a second-generation cryoballoon cause superior vena cava potential conduction delay in patients with paroxysmal atrial fibrillation?
Observational (n=31)
Does pulmonary vein isolation with a second-generation cryoballoon cause superior vena cava potential conduction delay in patients with paroxysmal atrial fibrillation?
RSPV isolation with a second-generation cryoballoon can produce an SVC potential conduction delay, which is strongly correlated with the anatomical distance between the RSPV and SVC.
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Potential SVC conduction effects warrant monitoring during RSPV cryoballoon ablation; leaves open clinical relevance of RSPV-SVC distance.
Ichihara et al. (2015) conducted an observational in paroxysmal atrial fibrillation (n=31). Pulmonary vein isolation with a 28 mm second-generation cryoballoon was evaluated on Superior vena cava potential conduction delay >5.0 milliseconds during right superior pulmonary vein isolation. Right superior pulmonary vein isolation with a second-generation cryoballoon produced a median superior vena cava potential conduction delay of 6.0 ms, which correlated with RSPV-SVC distance.
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