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. 2011 Oct 24;19:60. doi: 10.1186/1757-7241-19-60

Figure 4.

Figure 4

Number of attempts needed dependent on the supraglottic device. FT required the fewest attempts, followed by the LMA, the LT and the Cobra. No statistically significant differences could be shown between the FT and the LMA (p > 0.05). Compared to the FT, the Cobra* (p < 0.0001) and LT# (p < 0.05) needed significantly more attempts for correct placement. No significant differences between the Cobra, LMA, and LT were found. Data are presented in percentage.