The American journal of emergency medicine
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The risks of intravenous (IV) lidocaine before rapid sequence induction (RSI) have become a great concern. No study has investigated the hemodynamic effects of IV lidocaine during endotracheal intubation in patients with severe traumatic brain injury. ⋯ Intravenous lidocaine in addition to RSI before endotracheal intubation was not associated with significant hemodynamic changes in patients with severe traumatic brain injury.
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Aortic dissection (AD) is one of the most challenging diagnoses in emergency medicine. This is due, in part, to its variable presentation, ranging from abrupt tearing chest pain in a hemodynamically unstable patient to back pain in a stable patient, as well as its high mortality rates. (1) With the expanding role of ultrasound (U/S) performed by emergency physicians, it is possible to make the diagnosis of AD at the bedside before any other imaging modality has been accessed. (2) In this case report, we describe the use of emergency department (ED) bedside U/S and specifically highlight the use of the suprasternal view in the diagnosis of AD.
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Case Reports
Successful treatment of thyroid crisis accompanied by hypoglycemia, lactic acidosis, and multiple organ failure.
We describe a case of thyroid crisis with hypoglycemia, lactic acidosis, multiple organ failure, and disseminated intravascular coagulation--rare but severe complications of thyroid crisis. The patient was a 59-year-old Chinese woman who presented with evidence of heart failure and atrial fibrillation. Analysis of a blood sample yielded astonishing results: her blood glucose was 1.7 mmol/L, and lactate greater than 15 mmol/L with the arterial pH as 6.94. ⋯ Prompt treatments such as mechanical ventilation, plasma exchange, and continuous venovenous hemofiltration were preformed, along with antithyroid medication. The patient finally survived after 3 weeks of intensive care. We herein discuss the possible mechanisms of these metabolic disorders in thyroid crisis and possible therapeutic measures that could be used to reduce mortality.
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We hypothesized that the oro-pharyngolaryngeal axes, occipito-atlanto-axial extension (OAA) angle and intubation distance would be influenced by the height of headrests. ⋯ We conclude that compared with no or 12-cm headrest, 6-cm headrest could facilitate more alignment of these axes, increase the OAA angle, and enlarge the intubation distance.
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The Bayesian approach to disease diagnosis in the emergency department is facilitated by the use of likelihood ratios (LRs) to evaluate diagnostic tests. The use of dichotomous, interval, and joint LRs for single and multiple tests is reviewed, and comparison is made to regression modeling. The clinical motivation for a single statistic to describe the average change in the odds of disease associated with the use of a particular test or series of tests is described. ⋯ Application of both tests together to patients with wide QRS complex tachycardia changes the odds of ventricular tachycardia, on average, by a factor of 3.5 (95% confidence interval, 2.4-6.2). Challenges are described, and methods are provided to estimate the 95% confidence interval of the LR and AALR using bootstrapping techniques. The AALR is a test statistic that may be helpful for clinicians and researchers in evaluating and comparing diagnostic testing approaches.