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- W2034358082 abstract "Transport of mechanically ventilated patients in a combat zone presents challenges including conservation of resources. In the battlefield setting, the provision of adequate oxygen supplies remains a significant issue. Autonomous control of oxygen concentration may allow a reduction in mission load.Trauma patients requiring ventilation and inspired oxygen concentration (FIO2) greater than 0.35 were evaluated for study. Patients were randomized to consecutive 4-hour periods of autonomous control or standard care. The system for autonomous control consisted of a ventilator, oximeter, and a portable computer. The portable computer housed the control algorithm and collected ventilator and oxygen saturation (SpO2) data every 5 seconds. The controller goal was to maintain SpO2 at 94% +/- 2% via discrete changes of 1% to 5%. Ventilator settings and SpO2 were recorded every 5 seconds for analysis.Fifteen patients were enrolled in this study. Oxygen saturation was maintained in the 92% to 96% saturation range 33% +/- 36% of the time during clinician control versus 83% +/- 21% during autonomous control. Oxygen usage was reduced by 44% during autonomous control. There was a slight difference in the total duration of SpO2 episodes less than 88% between groups (6.02 +/- 0.83 vs. 6.87 +/- 0.46 minutes, p < 0.05). There were no differences in the number of episodes of SpO2 <88%.Autonomous control of FIO2 offers the opportunity for a reduction in oxygen usage, allowing a weight and resource reduction, without increasing risk of hypoxemia in ventilated trauma patients." @default.
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- W2034358082 date "2009-02-01" @default.
- W2034358082 modified "2023-09-27" @default.
- W2034358082 title "Autonomous Control of Inspired Oxygen Concentration During Mechanical Ventilation of the Critically Injured Trauma Patient" @default.
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- W2034358082 doi "https://doi.org/10.1097/ta.0b013e318197a4bb" @default.
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