Endotracheal intubation is widely used for airway management in operating rooms, intensive care units, and emergency departments. By placing a tube directly into the trachea, clinicians can secure the airway, provide effective ventilation, and reduce the risk of aspiration. Medical device manufacturers have developed multiple designs for endotracheal tubes, especially in pediatrics, where airway anatomy and safety concerns are unique. Although uncuffed tubes remain a useful tool, structural differences, historical reasoning, and evolving evidence indicate that cuffed tubes are now favored in most settings.

Cuffed and uncuffed endotracheal tubes can be distinguished by their structural differences. Cuffed tubes feature an inflatable balloon near their tip that inflates and seals against the tracheal wall, preventing leaks and blocking secretions or gastric contents. Uncuffed tubes, in contrast, lack this balloon and rely instead on the natural narrowing of the pediatric airway at the cricoid cartilage, once thought to provide a sufficient seal 1.

For decades, uncuffed tubes were standard in children. The concern was that cuffs could injure delicate airway mucosa by exerting excess pressure, potentially leading to ischemia or subglottic stenosis. This view was supported by the belief that the cricoid ring was the narrowest part of the airway. However, newer imaging has shown that the glottis is often narrower, undermining this rationale and prompting a wider acceptance of cuffed tubes 2.

Cuffed endotracheal tubes offer several benefits. By sealing the airway, they enable accurate tidal volume delivery and reliable end-tidal CO₂ monitoring, improving ventilation. They also lower aspiration risk, an advantage in emergencies, trauma, or high-risk patients. Since they do not depend on an exact anatomical fit, cuffed tubes can offer greater size flexibility. In addition, in operating rooms, they limit anesthetic gas leakage, protecting staff from exposure.

Though less common today, uncuffed tubes still have their merits. Without a cuff, they avoid circumferential airway pressure, potentially reducing mucosal injury. Many clinicians remain comfortable using them, and they can perform adequately in stable, controlled situations. In resource-limited settings, cost savings may also support their use, although this is less influential in modern practice 3–6.

Advances in cuff technology (like high-volume, low-pressure designs) have somewhat reshaped safety perceptions. When cuff pressures are maintained at recommended levels, the risk of tracheal injury is very low, even in neonates. Studies confirm that cuffed tubes can improve ventilation, reduce aspiration, and lower the frequency of tube changes resulting from excessive leaks. Reflecting this evidence, organizations like the American Heart Association (AHA) have recommended cuffed tubes for most pediatric intubations 7,8.

The debate over cuffed versus uncuffed endotracheal tubes highlights the evolution of airway management. While uncuffed tubes remain useful in selected cases, cuffed tubes are increasingly considered the standard due to their reliability, efficiency, and protective benefits. Ultimately, selection should be tailored to patient needs, clinical context, and careful cuff pressure monitoring.

References

1. Yim A, Doctor J, Aribindi S, Ranasinghe L. Cuffed vs Uncuffed Endotracheal Tubes for Pediatric Patients: A Review. Asploro Journal of Biomedical and Clinical Case Reports 4, 50 (2021). DOI: 10.36502/2021/ASJBCCR.6228
2. Wani, T. M. et al. The pediatric airway: Historical concepts, new findings, and what matters. International Journal of Pediatric Otorhinolaryngology 121, 29–33 (2019). DOI: 10.1016/j.ijporl.2019.02.041
3. Society for Pediatric Anesthesia – SPA News. http://www3.pedsanesthesia.org/newsletters/2018summer/procon-con.html.
4. De Orange, F. A. et al. Cuffed versus uncuffed endotracheal tubes for general anaesthesia in children aged eight years and under. Cochrane Database Syst Rev 2017, CD011954 (2017). DOI: 10.1002/14651858.CD011954.pub2
5. Dariya, V., Moresco, L., Bruschettini, M. & Brion, L. P. Cuffed versus uncuffed endotracheal tubes for neonates. Cochrane Database Syst Rev 2022, CD013736 (2022). DOI: 10.1002/14651858.CD013736.pub2
6. RTSO. Cuffed vs. Uncuffed Endotracheal Tubes in Pediatric and Neonatal Care. Respiratory Therapy Society of Ontario https://www.rtso.ca/cuffed-vs-uncuffed-endotracheal-tubes-in-pediatric-and-neonatal-care/ (2021).
7. Kim, J. H., Ahn, J. H. & Chae, Y. J. Pediatric Application of Cuffed Endotracheal Tube. West J Emerg Med 24, 579–587 (2023). DOI: 10.5811/westjem.59560
8. Park, S. et al. Choice of the correct size of endotracheal tube in pediatric patients. Anesth Pain Med (Seoul) 17, 352–360 (2022). DOI: 10.17085/apm.22215