Key result
Real-time 3-D imaging demonstrated that the esophagus is located on or near the circumferential pulmonary vein isolation line in 54% of patients, with a significantly shorter distance to the left atrial posterior wall at the inferior portion (3 mm) than the superior portion (6 mm).
Observational (n=24)
Yes
Absolute Event Rate: 3% vs 6%
p-value: p=<0.01
Real-time 3D imaging with a noncontact mapping system demonstrates significant inter-patient variability in the location of the esophagus relative to the left atrium, with close proximity to ablation lines in over half of patients.
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May warrant individualized esophageal mapping during PVI; leaves open impact on injury rates.
Miyamoto et al. (2009) conducted an observational in Atrial fibrillation (n=24). Real-time 3-D imaging with a noncontact mapping system (EnSite version 6.0J) was evaluated on Mean distance between the esophagus and left atrial posterior wall (LAPW) at the bottom line vs LA roof line (p=<0.01). Real-time 3-D imaging demonstrated that the esophagus is located on or near the circumferential pulmonary vein isolation line in 54% of patients, with a significantly shorter distance to the left atrial posterior wall at the inferior portion (3 mm) than the superior portion (6 mm).