Passive release technique produces the most accurate endotracheal tube cuff pressure than manual palpation and minimum occlusive volume technique in the absence of manometer

Objective: This study aimed to compare the accuracy of the endotracheal tube (ETT) cuff pressure of the manual palpation (MP), passive release (PR), and minimum occlusive volume (MOV) techniques. Methods: This study is a true experiment with simple randomisation. The subjects of this study were 105 patients divided into 3 groups: MP group (n=35), PR group (n=35), and MOV group (n=35). After intubation, ETT cuff inflation was performed using 3 different tech-niques. The ETT cuff pressure was recorded using a manometer. The data were analysed using the chi-square test, Kruskal-Wallis test, and Mann-Whitney test in the SPSS 20 software. Results: The mean ETT cuff pressure was 60.2±28.8 cmH₂ O in the MP group, 30.4±5.5 cmH₂ O in the PR group, and 25.8±9.6 cmH₂ O in the MOV group (p=0.000). The PR group had the highest pressure accuracy (77%) (p=0.000). Conclusion: The PR technique had the highest accuracy and can be used as an alternative ETT cuff inflation technique in the absence of a manometer.