Pediatric laryngeal mask
Due to the relatively small volume of oropharynx in children, any mistake can cause respiratory obstruction and tissue damage. Therefore, the appropriate model should be selected according to age and weight before LMA (i.e., <5kg newborn/infant, 5-10 kg infant, 10-20 kg infant). LMA sizes 1.0, 1.5, 2.0, 2.5, 3.0 were used for children with 20-30 kg and >30 kg, respectively. The maximum size of the capsule was 4 ml, 7 ml, 10 ml, 14 ml, 20 ml, respectively).
Or use three finger width method: children's palm open, palm face up, and thumb and little finger apart, index finger, middle finger and ring finger together; The laryngeal mask of different models is inflated according to the maximum standard, and the front of the laryngeal mask is close to the palm of children's fingers. The widest side of the laryngeal mask is compared with the maximum width of children's index, middle and ring fingers to determine the most matching model of laryngeal mask. This is especially useful in emergency situations when the child's weight is not known.
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