Continuous Monitoring of the End Tidal CO2 Ensures that the Endotracheal Tube Remains in Place During the Removal of the LMA: In Response

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Variations of the technique Dr. Mayhew mentioned for removing an LMA while maintaining endotracheal tube position has been used with success. It seems that most authors either wedged two tubes of the same internal diameter together (1–3) or used the technique you described and inserted an ETT one half to one size smaller into the desired intubating tube (4). As you pointed out in your letter, our technique does involve the additional step of cutting the endotracheal tube connector. However, we feel not only does the use of the cut endotracheal tube connector make our arrangement unique, but it might also prove to be a more secure connection and prevent the endotracheal tube of smaller or similar diameter from slipping out of its mate.
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