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KMID : 1140520180220010073
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Korean Journal of Emergency Medical Services
2018 Volume.22 No. 1 p.73 ~ p.82
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Comparison of ventilation effects by mask-sealing methods during bag-valve-mask ventilation
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Lee Nam-Jong
Baek Mi-Lye
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Abstract
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Purpose: The purpose of this study was to compare the tidal volumes and airway pressures of 3 masksealing methods (one hand C-E, two hands C-E, and one hand O-E) for ventilation treatment.
Methods: The study subjects were 45 paramedic students. Tidal volume was measured for the three sealing methods by setting a ventilator, connecting it to the masks for 2 minutes, and using Respi-trainer software.
Results: Regarding general characteristics, the group of men, in upper grades, and with practical training experience and experience and experience in the implementation of bag-valve-mask ventilation provided higher tidal volumes. Regarding physical characteristics, larger hands and greater grip strength correlated with higher tidal volume. Two hands C-E generated the highest tidal volume of 483.78±34.14mL, one hand O-E generated 449.59±51.09mL and one hand C-E generated 394.31±68.95mL.
Conclusion: Means of tidal volumes were statistically significantly different based on mask sealing methods (p<.001). Two hand C-E was performed by the two-persons task and was suggested as the most effective method. For the one-person task, one hand O-E was the more effective method compared to the previous one hand C-E.
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KEYWORD
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Bag-valve-mask, Mask sealing, Ventilation, Tidal volume
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