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document
Comparison of tidal volumes obtained by one-handed and two-handed ventilation techniques . OBJECTIVES To compare tidal volumes delivered by one- vs two-handed compressions of a manual resuscitation bag and assess the effects of subject characteristics on those tidal volumes . DESIGN Subjects ( 108 healthcare providers from a 500-bed teaching hospital ) were assigned randomly to one of two procedures : one- followed by two-handed compression or two- followed by one-handed compression . A 1-liter resuscitation bag , lung performance analyzer and Wright spirometer were used to measure tidal volume . Data collection occurred in a simulated situation . RESULTS There was a significant difference in tidal volume delivered by one-handed ( mean = 694 mL , SD = 111 ) vs two-handed compressions ( mean = 827 mL , SD = 113 ) . Hand size , grip strength , height and weight were correlated with tidal volumes generated by one-handed and two-handed procedures . No other subject characteristics were correlated with tidal volumes . CONCLUSIONS Tidal volumes delivered by healthcare providers using one- vs two-handed compressions were found to be significantly different , with those delivered by two hands significantly greater than those delivered by one hand . Strength of hand grip was the best predictor of volume delivered and was more strongly correlated with volumes delivered by one rather than two hands .
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Intervention_Surgical
one-handed and two-handed ventilation techniques .
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Intervention_Surgical
one- vs two-handed compressions of a manual resuscitation bag
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Intervention_Surgical
one- followed by two-handed compression or two- followed by one-handed compression .
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Intervention_Surgical
one-handed
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Intervention_Surgical
two-handed compressions
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Intervention_Surgical
one-handed
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Intervention_Surgical
two-handed
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Intervention_Surgical
one-
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Intervention_Physical
vs
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Intervention_Surgical
two-handed compressions
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Intervention_Surgical
two hands
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Intervention_Surgical
one hand .
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Intervention_Surgical
one
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Intervention_Surgical
two hands .
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Outcome_Physical
tidal volume
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Outcome_Physical
tidal volumes
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Outcome_Physical
tidal volumes .
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Outcome_Physical
Tidal volumes
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Participant_Condition
one-handed
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Participant_Condition
two-handed ventilation techniques
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Participant_Sample-size
108
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Participant_Condition
simulated