Laryngeal Mask Airway Use in Tonsillectomy

Of the 132 total participants (45.1% response rate), 19 respondents (14.4% of respondents) signified that they prefer to use LMA, and answered the open-ended question, “If you use LMA during tonsillectomy, please describe situations where you would convert to endotracheal intubation/start with endotracheal intubation?” Sixteen respondents answered, “If you use LMA during tonsillectomy, please share any tips/tricks/ pearls,” and 1.5% of respondents preferred another airway management method, with the remaining majority using ETT.

With the aim of offering practical, conversational guidance to junior residents, while reflecting the evolving landscape of ENT surgery and fostering lifelong learning, four central themes emerged: choosing the right patient for an LMA, navigating airway pitfalls with LMAs, technical aspects of LMA use, and building LMA confidence.

Choosing the Right Patient

When it comes to LMAs in pediatric tonsillectomy, the first decision is not how to place one, but whether you should use one at all. Seasoned surgeons repeatedly flagged red-flag scenarios in which an LMA can quickly become the wrong choice: “less than two-year age; microstomic syndromes; chronic lung disease,” one surgeon cautioned. Another emphasized avoiding LMAs in children “under two years; respiratory disease; recent viral URTI; reflux,” while others pointed to “very small kids; craniofacial anomalies; severe obesity” as situations that tip the balance toward an endotracheal tube instead. Age and experience matter too; one respondent noted that in “age less than three, syndromic” patients, especially when “a junior resident [is] just learning tonsillectomy,” an ETT offers more reliable exposure and control. It is always important to consider the preference and familiarity of the anesthesiologist as well.

Navigating Airway Pitfalls with an LMA

Navigating airway pitfalls with an LMA means knowing exactly when to change course. Seasoned surgeons stressed that failure to “seat or ventilate appropriately” should never be ignored; it is the cue to reassess rather than push ahead. Their advice was clear: “Switch to endotracheal intubation if you encounter ventilation issues. Otherwise, continue with LMA.” Another pearl was to let the anesthesiologist’s comfort guide your next move: “If [the] anesthetist is not happy with ventilation or if the gag is obstructing [the] LMA,” it is time to abandon the device and secure the airway with an ETT. Ventilation issues addressed were commonly attributed to technological challenges of the LMA itself, such as mechanical compression of the device or epiglottic displacement, as reflected in the literature (Arch Otolaryngol Head Neck Surg. doi: 10.1001/ archoto.2010.230; J Otolaryngol Head Neck Surg. doi: 10.1177/19160216241263851). Anesthetic techniques, including inadequate depth of anesthesia, may contribute by causing reflex laryngeal closure upon mouth gag opening (Can J Anaesth. doi: 10.1007/BF03009607).