J Emerg Med
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Posterior reversible encephalopathy syndrome (PRES) classically occurs in patients presenting with a sudden increase of arterial pressure or eclampsia, but the range of etiologies is very wide. Although the mechanisms underlying PRES remain unclear, research suggests that when the extent of hypertension exceeds the threshold of cerebral blood flow autoregulation, this induces blood-brain barrier disruption that leads to brain edema. Unusual presentations on magnetic resonance imaging (MRI) are possible, including the involvement of frontal or temporal lobes, cerebellar hemispheres, basal ganglia, brainstem, or deep white matter. However, in these atypical locations, edema is mostly accompanied by the classical parieto-occipital region involvement. ⋯ We report the case of an elderly adult presenting with an unusual presentation of PRES with exclusive involvement of the frontal lobes, associated with severe hypertension. In our case, computed tomography and MRI abnormalities were exclusively localized in the frontal regions without involvement of the classical parieto-occipital regions. A favorable clinical course after hypertension management and complete clearance on an MRI scan at 3 months' follow-up confirmed the diagnosis. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: PRES is a condition potentially encountered by many doctors, especially in the emergency department. However, atypical clinical or imaging presentations are possible and could delay the diagnosis. These must be known to begin adequate treatment as quickly as possible.
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A significant increase in false positive ST-elevation myocardial infarction (STEMI) electrocardiogram interpretations was noted after replacement of all of the City of San Diego's 110 monitor-defibrillator units with a new brand. These concerns were brought to the manufacturer and a revised interpretive algorithm was implemented. ⋯ This study shows that introducing a revised 12-lead interpretive algorithm resulted in a significant reduction in the number of false positive STEMI electrocardiogram interpretations in a large urban emergency medical services system. Rigorous testing and standardization of new interpretative software is recommended before introduction into a clinical setting to prevent issues resulting from inappropriate cardiac catheterization laboratory activations.
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Emergency department (ED) visits for unintentional opioid overdoses have increased dramatically. Naloxone hydrochloride (Narcan®) is an opioid antagonist commonly used to treat these overdoses. ⋯ Many patients presenting with opioid overdose have had a history of opioid overdose. Patients with opioid overdose required a highly variable dose of naloxone. Higher doses of naloxone were associated with lower age. Despite widespread availability of naloxone to consumers, a minority of patients in this study reported access to naloxone. Participants who had access to a naloxone kit stated that their frequency and dosage of opioid use did not change.
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Mental health conditions account for 52.8 million (4.9-6.3%) emergency department (ED) visits in the United States. Psychotic conditions are responsible for approximately 10% of all mental health presentations. ⋯ UMC is a common etiology in patients presenting to the ED with a first episode of psychotic symptoms.
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The Easy IJ procedure involves placement of a 4.8-cm intravenous catheter into the internal jugular (IJ) vein using ultrasound guidance. It is not known whether this needle length has the potential to cause a pneumothorax. ⋯ Radiographic analysis failed to show a margin of safety for the Easy IJ procedure. Postprocedure imaging may still be necessary to exclude pneumothorax.