Fig. 5
From: Laryngeal mask versus facemask in the respiratory management during catheter ablation
The maximum and minimum values and these standard deviations (SD), which were identified from the CO2 differential waveforms. a. Differences of mean of maximum values in the expiratory phase, b. Differences of the SD of maximum values in the expiratory phase, c. Differences of mean of minimum values in the inspiratory phase, d. Differences of the SD of minimum values in the inspiratory phase