Fig. 6
From: Laryngeal mask versus facemask in the respiratory management during catheter ablation
a and b: The respective plots of the facemask (a) and laryngeal mask groups (b) with the standard deviation (SD) of the respiratory interval set on the horizontal axis and that of end-tidal CO2 (ETCO2) values on the longitudinal axis. e. The difference of linear function of the facemask (a) and laryngeal mask groups (b) with the SD of the respiratory interval set on the horizontal axis and that of ETCO2 values on the longitudinal axis. c and d: The respective plots of the facemask (c) and laryngeal mask groups (d) with the respiratory interval set on the horizontal axis and the ETCO2 values on the longitudinal axis