Study population
Baseline patient characteristics are shown in Table 1 . Both the
minimum distance between the LA roof and esophagus and the minimum
height of the LA roof from the point where the LAPW and esophagus make
contact were evaluated in the sagittal plane of patients whose esophagi
were located at the posterior of the LA roof. The mean distance and
height measurements were 11.0 ± 4.3 mm and 8.9 ± 3.3 mm, respectively.