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Research article

Bevel Position and Its Effect on Success of Intubation Through Intubating Laryngeal Mask Airway

Authors:

Mohd Mustahsin ,

Era's Lucknow Medical College, Lucknow, IN
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Subrata Podder,

Postgraduate Institute of Medical Education and Research, Chandigarh, IN
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L. N. Yaddanapudi,

Postgraduate Institute of Medical Education and Research, Chandigarh, IN
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Indu Bala

Postgraduate Institute of Medical Education and Research, Chandigarh, IN
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Abstract

Background: The bevel position of tracheal tube (TT) affects the success rate while using intubating laryngeal mask airway (ILMA). The present study compared the success of intubation on the basis of anterior and posterior position of the bevel of conventional polyvinylchloride (PVC) tracheal tube through an ILMA.

 

Methods: Two hundred adult ASA I or II patients, having Mallampati class 1 or 2 airway, and undergoing elective surgery under general anesthesia were included in the study. Patients were randomized in two groups based on anterior or posterior bevel position while intubating. If proper tracheal position was established within 3 insertion attempts tracheal intubation was considered successful.

 

Results: Successful tracheal intubation was achieved in 191/200 patients (95.5%). There was higher first attempt success rate in bevel anterior group (88.6% vs 65.5%, relative risk ratio 1.418, 95% C.I. 1.18-16.8; p= 0.00006). There was similar overall success rate between the bevel anterior and posterior groups (97.0% vs 94.0%, relative risk ratio 1.03, 95% C.I. 0.97-1.10; p=0.5).

 

Conclusion: Tracheal intubation was successful in 95.5% of patients through an ILMA using PVC tracheal tube. Success rate of intubation was similar in both the groups. Bevel anterior group had higher success on first attempt intubation.

How to Cite: Mustahsin, M., Podder, S., Yaddanapudi, L.N. and Bala, I., 2022. Bevel Position and Its Effect on Success of Intubation Through Intubating Laryngeal Mask Airway. Sri Lankan Journal of Anaesthesiology, 30(1), pp.20–24. DOI: http://doi.org/10.4038/slja.v30i1.8781
Published on 11 Jun 2022.
Peer Reviewed

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