TY - JOUR
AU1 - Reid, C.
AU2 - Hayes‐Bradley, C.
AU3 - Burns, B.
AB - Groombridge et al. reported improved pre‐oxygenation with portable ventilator‐delivered non‐invasive ventilation (NIV) compared with using a self‐inflating bag‐valve‐mask device (BVM), but it is difficult to draw firm conclusions from their work . We assume that no inspiratory pressure support above PEEP was delivered, limiting the mode essentially to continuous positive airway pressure, although this was not explicitly stated. Additionally, the fraction of inspired oxygen (FiO2) was not stated, although this was presumably 100%. The authors suggest that the weight of the ventilator, requirement for training, and oxygen supply issues might discourage its use for pre‐hospital preoxygenation.We tested this final point by having a 75 kg adult healthy male volunteer (CR) breathe through a tight fitting NIV mask with 5 cm H2O PEEP, zero additional inspiratory pressure support, and an FiO2 of 1.0, using the Oxylog 3000 Plus ventilator. Oxygen requirements per minute would be expected to consist of the minute volume, gas consumption for internal ventilator control, and any gas leakage from the mask or circuit. Breathing comfortably at a rate of 12 bpm for 3 min on the above settings resulted in a measured gas consumption of 22 l.min−1, which is indeed in excess of what would be delivered via a flowmeter through a 
TI - Pre‐hospital pre‐oxygenation strategies
JF - Anaesthesia
DO - 10.1111/anae.13949
DA - 2017-08-01
UR - https://www.deepdyve.com/lp/wiley/pre-hospital-pre-oxygenation-strategies-7G4Nm1O9u3
SP - 1038
EP - 1039
VL - 72
IS - 8
DP - DeepDyve
ER -