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Direct tracheal airway pressure measurements are essential for safe and accurate dynamic monitoring of respiratory mechanics. A laboratory study

Background: All monitoring of respiratory mechanics should depend on tracheal pressures (Trach‐P) as endotracheal tube resistance (ETT‐Res) will otherwise distort them. The aim of this study was to investigate factors that may vary ETT‐Res, causing difficulties in ETT‐Res estimation clinically, and to evaluate a method for direct Trach‐P measurements to obviate these problems.