Tapered-cuff versus cylindrical-cuff tracheal tube in preventing fluid leak: An in-vitro experimental study

Autor: Mohamed Ismail, Dalya Hamamah, Eamon Tierney, William Francis Casey, Fares Uddin, Anis Chaari, Shehab Khashaba
Rok vydání: 2019
Předmět:
Zdroj: Trends in Anaesthesia and Critical Care. 25:41-45
ISSN: 2210-8440
Popis: Background Ventilator-acquired pneumonia is a common complication in intensive care units. Ensuring optimal tracheal sealing might prevent this complication. Aim To compare the effectiveness of polyvinyl chloride taper-shaped versus polyvinyl chloride cylindrical-shaped cuffed tubes in reducing the peri-cuff leak. Design Experimental study using a sheep trachea model. The tracheal tubes were inserted into the trachea placed in a vertical position at a fixed height. The cuff of each tube was inflated until reaching a pressure ranging between 25 and 30 cm H2O. Ten milliliters of methylene blue were poured above the cuff and the volume of fluid leaking around the tube was collected and quantified at 30 min, 60 min and 360 min. Results Sixty measurements were performed with cylindrical shaped cuffed tubes and 48 measurements were performed with the taper-shaped cuffed tubes. Repeated measures analysis of variance showed that there was a significant difference in the volume of leakage for both tubes over time (p = 0.016). Accordingly, the post hoc analysis revealed a significant decrease of the volume leaking at 30 min versus 360 min. The between subject variables assessment showed a significant decrease of leak volume with the taper-shaped cuffed tracheal tubes (p = 0.011). Conclusion Our experimental study suggests that polyvinyl chloride taper-shaped cuffed tubes are more effective in ensuring appropriate tracheal sealing and reducing the fluid leak around the cuff of the tracheal tube.
Databáze: OpenAIRE
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