Figure 1: Schematic of active esophageal cooling device (ensoETM, Attune Medical, Chicago, IL), with permission.
2.4 Statistical Analysis
Rates of post-ablation chest pain among patients were compared before and after the implementation of active esophageal cooling. Fisher’s exact test was used with a two-sided level of 0.05 to compare groups by chest pain and the use of roof and floor lines. For all analyses, R statistical computing software was utilized.