Fig. 4From: K-Y™ jelly inhibits increase in endotracheal tube cuff pressure during nitrous oxide exposure in vitroPressure-volume curve with and without lubrication in PVC and PU cuffs (rigid trachea model). Pressure-volume curves of tested tracheal tube cuffs with and without lubrication restricted in a rigid trachea model. Graphs a and b show the results of the PVC and PU cuffs, respectively. Data are expressed as meanBack to article page