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Year : 2011  |  Volume : 27  |  Issue : 3  |  Page : 358-361

Endotracheal tube cuff pressure monitoring during neurosurgery - Manual vs. automatic method

1 Department of Neuroanesthesiology, Institute of Human Behavior and Allied Sciences, Dilshad Garden, Delhi, India
2 Department of Biostatistics, Institute of Human Behavior and Allied Sciences, Dilshad Garden, Delhi, India

Correspondence Address:
Mukul Kumar Jain
Department of Neuroanaesthesiology, Room No. 118, Academic Block, Institute of Human Behavior and Allied Sciences, Dilshad Garden, Delhi
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Source of Support: None, Conflict of Interest: None

DOI: 10.4103/0970-9185.83682

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Background: Inflation and assessment of the endotracheal tube cuff pressure is often not appreciated as a critical aspect of endotracheal intubation. Appropriate endotracheal tube cuff pressure, endotracheal intubation seals the airway to prevent aspiration and provides for positive-pressure ventilation without air leak. Materials and Methods: Correlations between manual methods of assessing the pressure by an experienced anesthesiologists and assessment with maintenance of the pressure within the normal range by the automated pressure controller device were studied in 100 patients divided into two groups. In Group M, endotracheal tube cuff was inflated manually by a trained anesthesiologist and checked for its pressure hourly by cuff pressure monitor till the end of surgery. In Group C, endotracheal tube cuff was inflated by automated cuff pressure controller and pressure was maintained at 25-cm H 2 O throughout the surgeries. Repeated measure ANOVA was applied. Results: Repeated measure ANOVA results showed that average of endotracheal tube cuff pressure of 50 patients taken at seven different points is significantly different (F-value: 171.102, P-value: 0.000). Bonferroni correction test shows that average of endotracheal tube cuff pressure in all six groups are significantly different from constant group (P = 0.000). No case of laryngomalacia, tracheomalacia, tracheal stenosis, tracheoesophageal fistula or aspiration pneumonitis was observed. Conclusions: Endotracheal tube cuff pressure was significantly high when endotracheal tube cuff was inflated manually. The known complications of high endotracheal tube cuff pressure can be avoided if the cuff pressure controller device is used and manual methods cannot be relied upon for keeping the pressure within the recommended levels.

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