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Fig. 2 | SpringerPlus

Fig. 2

From: Comparison of polyvinyl chloride and elastic stannum stylet extraction forces with various lubricants: a simulation study

Fig. 2

Comparison of extraction forces with different lubricants. a Tracheal tube with an internal diameter (ID) of 7.0 mm, b tracheal tube with an ID of 7.5 mm, c tracheal tube with an ID of 8.0 mm. None: stylets were not treated with any lubricant; Water: stylet pre-treated with water; lidocaine: stylet pretreated with lidocaine spray; olive: stylet pretreated with olive oil. # P < 0.05 compared to PVC stylet. *P < 0.05 compared to none or water. § P < 0.05 compared to none

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