We experienced two cases of difficult airway management using laryngeal mask airway (LMA) in children. LMA Classic (LMA-C) was used for a 4-year-old female patient and SOFTSEAL LMA (LMA-S) was used for a 15-year-old female patient. Both patients were successfully intubated by fiberoptic tracheal intubation through LMA. We compare these two kinds of LMA in fiberoptic intubation method. Because the diameter of the shaft is wider than LMA-C, LMA-S could pass through much larger size endotracheal tube (ETT). 4.0 mm ETT could pass through LMA #1 and #1.5 in both LMAs. 5.0 mm ETT could pass through LMA-S #2, but only 4.5 mm ETT could pass through LMA-C #2. In #2.5, LMA-S and LMA-C could be passed by 6.0 mm ETT and 5.5 mm ETT respectively. Also LMA-S and LMA-C #3 could be passed by 7.0 mm ETT and 6.5 mm ETT respectively. We conclude that SOFTSEAL LMA is more useful than LMA Classic for fiberoptic tracheal intubation technique.
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