Does the minimal occlusive volume technique provide adequate endotracheal tube cuff pressure to prevent air leakage?: a prospective, randomized, crossover clinical study

摘要: Background Methods of determining proper endotracheal tube (ETT) cuff pressure to prevent air leakage include the minimal occlusive volume (MOV) technique, which uses auscultation, and spirometer directly measures inspiratory expiratory breathing volumes. Spirometers may measure even small leakage, therefore, technique requires a higher than MOV completely seal airway. This study aimed evaluate difference in between two techniques used Thirty-five female patients were intubated using an ETT with cuff, inflation was performed both at 10-min interval random order-the then or vice versa. The measured each period. Results pressures 16.7 ± 4.4 cmH2O 18.7 5.2 for techniques, respectively. 2.0 that this statistically significant (95% confidence interval, 0.7-3.3; P = 0.003). Considering upper end (3.3 cmH2O) 95% size one scale unit (2.0 manometer, up 4 practice. Conclusions Even though sound disappears on unlike previous recommendation, airway sealing would be completed only by increasing approximately cmH2O.