European journal of emergency medicine : official journal of the European Society for Emergency Medicine
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Comparative Study
The utility of shock index in differentiating major from minor injury.
The importance of early recognition of hemorrhagic shock and its effects on outcome have long been recognized. Traditional vital signs are relatively insensitive as early diagnostic markers of hemorrhage. The shock index (SI); heart rate (HR) divided by systolic blood pressure (SBP), has been suggested as such a marker. We tested the diagnostic utility of the SI in differentiating major from minor injury in trauma patients. ⋯ The SI can be a valuable tool, raising suspicion when it is abnormal even when other parameters are not, but is far too insensitive for use as a screening device to rule out disease. A normal SI should not lower the suspicion of major injury.
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Comparative Study
Acute severe asthma: performance of ventilator at simulated altitude.
Exacerbation of asthma can be seen during air transport. Severe patients, not responding to conventional therapy, require ventilator support. We evaluated the performance of two transport ventilators, built with turbine technology, the T-birdVSO2 and the LTV-1000, for use during aeromedical evacuation of acute severe asthma. We have assessed the ability of both the ventilators to deliver to an acute severe asthma model a tidal volume (Vt) set at different simulated altitudes, by changing the ambient air pressure. ⋯ The accuracy of Vt delivery was superior with the LTV-1000 than with the T-birdVSO2, but the higher delivered Vt of the LTV-1000 are likely to be more harmful than lower delivered Vt of the T-birdVSO2.
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Comparative Study
Predictive factors for positive coronary angiography in out-of-hospital cardiac arrest patients.
Coronary angiography is often performed in survivors of out-of-hospital cardiac arrest, but little is known about the factors predictive of a positive coronary angiography. Our aim was to determine these factors. ⋯ Among the factors identified, diabetes and a history of coronary artery were strong predictors for a positive coronary angiography, whereas ST segment elevation was not as predictive as expected.
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Comparative Study
Physician experience in addition to ACLS training does not significantly affect the outcome of prehospital cardiac arrest.
Little data exists on whether the physicians' skills in responding to cardiac arrest are fully developed after the advanced cardiac life support (ACLS) course, or if there is a significant improvement in their performance after an initial learning curve. ⋯ In this study, resuscitative experience of the physician did not have a significant effect on survival suggesting that experience does not significantly add to the current ACLS training in responding to ventricular fibrillation/ventricular tachycardia. More studies are needed.
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Serious pulmonary and cardiac failure may be treated with extracorporeal membrane oxygenation (ECMO) when the conventional treatment fails. Improvements in extracorporeal circulation devices have allowed us to set up two specialized mobile units: a mobile cardiac assistance unit (MCAU) and a mobile respiratory assistance unit (MRAU). Their role is to provide ECMO at patient's bedside, and then to ensure inter-hospital transport (IHT). The aim of this study was to evaluate our experiences with the transportation of patients on ECMO. ⋯ This study shows that mobile ECMO system can be successfully and quickly established at patient's bedside, and that transportation of patients on ECMO can be performed safely and without technical difficulties.