Comparison of VBM Endoscopy Mask and Explorer Endoscopy Face Mask on Fiberoptic Intubation：A Manikin Study

Abstract

We compared the performance of two types of endoscopy masks for fiberoptic intubation, the VBM endoscopy mask（VBM mask）and the Explorer endoscopy face mask（Explorer mask）. The masks were placed on manikins, and fiberoptic intubation was performed with positive pressure ventilation via the mask. Intubation time, maneuverability of the tracheal tube and scope, and tidal volume before and during fiberoptic intubation with the two masks were compared. There were no significant differences in intubation time, tube and scope maneuverability, or tidal volume before intubation attempt. Tidal volume was significantly reduced with both masks after intubation attempt. The degree of reduction in tidal volume was clinically safe with the VBM mask, but ventilation became difficult due to leakage with the Explorer mask. With respect to ease of fiberoptic intubation, both masks had almost the same performance, but in terms of mask ventilation, the Explorer mask required measures to prevent leakage.