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Rivista di Anestesia, Rianimazione, Terapia Antalgica e Terapia Intensiva
Minerva Anestesiologica 2010 March;76(3):181-7
Effects of tracheal intubation on ventilation with LMA Classic™ for percutaneous dilation tracheostomy
Carron M., Freo U., Michielan F., Ori C. ✉
AIM: The classic laryngeal mask airway (cLMA™) can be used in place of an endotracheal tube (ETT) as the ventilatory device during percutaneous dilational tracheostomy (PDT). We aimed to investigate the possible loss of efficacy of cLMA™ after tracheal intubation.
METHODS: Severity of laryngeal lesions and efficacy of cLMA™ were determined in two groups of thirty patients each who were switched from ETT ventilation to cLMA ventilation for PDT after a short (<4 days) or a long (>12 days) tracheal intubation.
RESULTS: cLMA™ allowed us to carry out PDT in all patients. Short tracheal intubations resulted in mild lesions of the larynx and mild gas leaks during cLMA™ ventilation. Longer intubations caused moderate-to-severe (P<0.05) lesions of the larynx and larger gas leaks. A single complication occurred in one patient post-procedurally and in no patient at 6-month follow-up.
CONCLUSION: Efficacy of cLMA™ was maintained after short tracheal intubation and decreased after long intubation.