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Post-injury hypothermia is a risk predictor in trauma patients whose physiology is deranged. The aim of the present study was to examine the effect of simple, in-field, hypothermia prevention to victims of penetrating trauma during long prehospital evacuations.
Methods:
A total of 170 consecutively injured landmine victims were included in a prospective, clinical study in Northern Iraq and Cambodia. Thirty patients were provided with systematic prehospital hypothermia prevention, and for 140 patients, no preventive measures were provided.
Results:
The mean value for the time from injury to hospital admission was 6.6 hours (range: 0.2–72). The incidence of hypothermia (oral temperature <36°C) before prevention/rewarming was 21% (95% confidence interval: 15% to 28%). The Prevention Group had a statistically significant lower rate of hypothermia on hospital admission compared to the control group (95% confidence interval for difference: 6% to 24%).
Conclusion:
Simple, preventive, in-field measures help to prevent hypothermia during protracted evacuation, and should be part of the trauma care protocol in rural rescue systems.
To evaluate three prototype versions of semi-quantitative end-tidal CO2 monitors with different alarm features during prehospital or inter-facility use.
Methods:
Subjects were 43 adult, non-pregnant patients requiring intubation, or who already were intubated and required transport. Teams at one AirEvac and seven Advanced Life Support (ALS) paramedic stations were trained in the use of the monitors. Team members at each station evaluated each model for eight days. Participants completed questionnaires following each use.
Results:
The monitors performed properly in all cases, but in one case, vomit in the airway adapter tube prevented obtaining a readout. The monitors aided management in 40 of 43 cases (93%); in one, the monitor reading was reported as variable (between 20 and 30 mmHg) although the teams knew the monitors were semi-quantitative; in another, the monitor was not required, but performed properly; and the third was the one in which vomit in the tube prevented a reading. In 26 of 43 cases (60.4%), the monitor was used to confirm endotracheal tube placement (there were no instances of incorrect placement). In all cases, the devices were used to monitor respiration and oxygen saturation. Alarms were audible in the environment, but only preferred in the AirEvac situation. The “breath beep” feature was useful, particularly in patients in whom chest movements during respiration were difficult to observe.
Conclusions:
“Breath beeps” were clearly audible and were a useful feature in all prehospital and transport environments, while audible alarms were desired only in the AirEvac situation. Semi-quantitative CO2 detection is valuable in the ALS/AirEvac environment, even for teams with high intubation success rates.