The American journal of emergency medicine
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The increased volume in demand worldwide in the present day has led to the need for the establishment of effective ambulance services. As call centers have become the primary contact point between patients and emergency service providers, the planning of the call center has become a key task for administrators. ⋯ This paper provides a basis for operation planning strategies of ambulance services by reconsidering the uncertainties of demand. The newsvendor model, which works well under parameter uncertainty, can be used in planning the capacities of health care services, especially when high service levels are required.
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Case Reports
An incidental image of a patient with chest pain after fall from a tree: Swyer-James-MacLeod syndrome?
Unilateral hyperlucent lung was firstly described by Swyer and James 1950s. After that, some patients with same disease were detected by Macleod. Then this syndrome was named as Swyer- James-Macleod syndrome (SJMS), and this syndrome includes a smaller or normal sized unilateral hyperlucent lung. ⋯ In his computed tomography no rib fracture, pneumothorax and hemothorax. But an abnormal image (5.5 cm hyperlucent area) was seen in his left lung. This report aims to present one of incidentally diagnosed rare case of SJMS.
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The role of circulatory support in the post-cardiac arrest period remains controversial. Our objective was to investigate the association between treatment with a percutaneous hemodynamic support device and outcome after admission for cardiac arrest. ⋯ Treatment with percutaneous hemodynamic support device in the post-arrest period may provide left ventricular support and improve outcome.
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Observational Study
Are three ports better than one? An evaluation of flow rates using all ports of a triple lumen central venous catheter in volume resuscitation.
Poiseuille's law states flow rates are directly proportional to the radius to the 4th power and indirectly proportional to the length of a tube. Because of this property, large bore catheters are commonly used in the resuscitation of the critically ill patient. However, there are no studies comparing simultaneous use of all three lumens of a triple lumen (TL) central venous catheter (CVC) with other catheter types. Our objective was to compare the flow rates of normal saline (NS) through various resuscitation catheters against a TL CVC using all 3 ports. ⋯ Simultaneous use of all 3 ports of a TL CVC generates flow rates comparable to many other commonly used resuscitation catheters.
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Randomized Controlled Trial Comparative Study
Resuscitation quality of rotating chest compression providers at one-minute vs. two-minute intervals: A mannequin study.
The aim of this randomized cross-over study was to compare one-minute and two-minute continuous chest compressions in terms of chest compression only CPR quality metrics on a mannequin model in the ED. ⋯ There was no statistically significant difference in the quality metrics of chest compressions between 1- and 2-minute chest compression only groups.