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Using a Neopuff Infant Resuscitator (Fisher & Paykel Healthcare, Auckland, New Zealand), Hawkes et al1 showed that a peak inflating pressure (PIP) >100 cm H2O can be delivered with a flow meter at maximum flow. We tested five flow meters to determine the pressures delivered at different flow rates.
Gas flow was analysed using the Timeter RT-200 Flow Analyser (Timeter-Instruments, St Louis, Missouri, USA). Each flow meter was tested connected to a wall oxygen outlet or a low-flow air/oxygen blender (Cardinal Health, Ohio, USA).
Positive pressure ventilation was given to a leak-free test lung using a Neopuff. Neopuff set to PIP 20 cm H2O, …
Funding Dr Schmölzer is supported in part by a Royal Women's Hospital Postgraduate Research Degree Scholarship and a Monash International Postgraduate Research Scholarship. Dr Davis is supported in part by an Australian National Health and Medical Research Council Practitioner Fellowship. This study is supported by the Australian National Health and Medical Research Council Programme grant No. 384100.
Competing interests None.
Provenance and peer review Not commissioned; externally peer reviewed.