Single bag for adults and kids

A nice idea – using a single adult self-inflating bag for the resuscitation of adult and paediatric patients, marked to identify compression points that deliver specific tidal volume ranges. Might be useful in situations where equipment needs to be minimised, such as military or pre-hospital settings.

AIM: To overcome limitations of inaccurate tidal volume (TV) delivery by conventional selfinflating paediatric and adult bags during paediatric and adolescent resuscitation, we designed a novel target volume marked bag (TVMB) with four compression points marked on an adult bag surface. The aim of this study was to evaluate the TVMB in delivering preset TV.


METHODS: Fifty-three subjects (28 doctors, 17 nurses, 8 paramedics) participated in this simulation trial. TVMB, paediatric bag and adult bag were connected to a gas flow analyser for measuring TV and peak inspiratory pressure (PIP). In a random cross-over setting, participants delivered 10 ventilations using the adult bag, paediatric bag or TVMB in each of four target volume ranges (100-200ml, 200-300ml, 300-400ml, 400-500ml). We compared TV and PIP for the adult bag, paediatric bag and TVMB in each subject.


RESULTS: Compared with the paediatric bag, TVMB showed higher rates of accurate TV delivery in the 200-300ml target volume range (87-90% versus 32-35%; p<0.05). Compared with the adult bag, TVMB showed higher rates of accurate TV delivery in all target volume ranges (75-90% versus 45-50%; p<0.05). The frequency of too high or low TV delivery was higher with the adult bag than TVMB (20-30% versus 0-5%; p<0.05). There was no significant difference in PIP between the paediatric bag and TVMB (within 5cm H(2)O; p<0.05).


CONCLUSIONS: TVMB could deliver accurate TV in various target volume ranges for paediatric and adolescent resuscitation.

Resuscitation. 2011 Jun;82(6):749-54

3 thoughts on “Single bag for adults and kids”

  1. I had to pull the study itself to figure out exactly what they meant (the schematic in figure 2 helped) by “compression points,” but otherwise it looks promising!

    Basically they point out where to grip the bag to squeeze, and provide varying points along the surface of the BVM to approximate different size BVMs with just an adult BVM.

  2. Thanks Christopher. I wanted to include an image from the paper but didn’t want to breach copyright

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