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Table 2 Time of insertion, attemps and ventilation quality (tidal volumes, estimated leakage).

From: Laypersons can successfully place supraglottic airways with 3 minutes of training. A comparison of four different devices in the manikin

  LMA Cobra LT FT
Time to insertion 23.8 ± 21.2 (17) [9-120] 31.9 ± 27.9 (19) [9-120] 21.9 ± 14.7 (15) [8-75] 17.9 ± 14.6 (15) [8-120]
Success, n 138 (97.1%) 105 (95.8%) 139 (98.6%) 141 (100%)
Leakage, tidal volumes    
   no, > 800 ml 36 (25.5%) 96 (68.1%) 97 (68.8%) 107 (75.9%)
   minor, 500-800 ml 101(71.6%) 39 (27.7%) 42 (29.8%) 34 (24.1%)
   major, < 500 ml 4 (2.8%) 6 (4.3%) 2 (1.4%) 0
Attempts,%     
   1st/2nd/3rd 80.9/14.9/4.3 66.7/22/11.3 71.6/21.3/7.1 92.9/7.1/0
  1. Tidal volumes > 500 ml were quoted sufficient according the ILCOR guidelines. With all devices a tidal volume greater than 150 ml (estimated dead space) could be applied. Data are presented as mean +/- standard deviation, (median), [range] and number.