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Choice of flow meter determines pressures delivered on a T-piece neonatal resuscitator
  1. G M Schmölzer1,2,3,4,
  2. R Bhatia1,3,
  3. C J Morley1,3,
  4. P G Davis1,3
  1. 1Neonatal Services, The Royal Women's Hospital, Melbourne, Australia
  2. 2Division of Neonatology, Department of Paediatrics, Medical University, Graz, Austria
  3. 3Murdoch Children Research Institute, Melbourne, Australia
  4. 4Department of Physiology, Monash University, Melbourne, Australia
  1. Correspondence to Georg M Schmölzer, Department of Newborn Research, The Royal Women's Hospital, 20 Flemington Road, Parkville, Melbourne VIC 3052, Australia; georg.schmoelzer{at}

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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, …

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