Endotracheal tube cuff pressure assessment maneuver induces drop of expired tidal volume in the postoperative of coronary artery bypass grafting

Table 3 Absolute and percentual values of expired tidal volume pre-P1 versus post-P1

Variables	Pre-P1 evaluation	Post-P1 evaluation
Expired tidal volume (mL)	518.03 ± 52.16	466.95 ± 50.10 *
Percentual value (%)		90.13 ± 3.19 †

Data expressed as mean ± standard deviation with * p < 0.0001 in relation to Pre-P1 versus Post-P1 comparison. P1 = pressure after cuff deflation/re-inflation to appropriated adjustment of pressures. † Percentage values of post-P1 in relation to pre-P1.

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