J Emerg Med
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Vitamin B12, or cobalamin, is a nutrient that is vital for metabolic function. Absorption of ingested B12 is dependent on intrinsic factor, which is secreted by parietal cells within the stomach. Pernicious anemia is caused by an intrinsic factor deficiency or autoantibodies against intrinsic factor. The presence of parietal cell antibodies can destroy parietal cells, which can also lead to a deficiency in intrinsic factor. Both lead to megaloblastic anemia caused by vitamin B12 deficiency. The typical presentation of pernicious anemia includes fatigue, pale appearance, tingling sensation, depression, alterations to vision and smell, urinary incontinence, psychotic episodes, and weakness. The most effective treatment for pernicious anemia is intramuscular B12. ⋯ A 27-year-old woman with a history of vitiligo presented to the emergency department (ED) with bilateral lower extremity weakness, clumsiness, numbness, and tingling. Physical examination revealed ataxia, no sensation below her umbilicus, decreased strength, and hyperreflexia in both lower extremities. Complete blood count in the ED revealed low hemoglobin and hematocrit and elevated mean corpuscular volume, concerning for pernicious anemia. Further laboratory testing upon inpatient admission revealed a low vitamin B12 level and parietal cell antibodies in the blood. The patient's pernicious anemia was treated with intramuscular vitamin B12 injections, which led to near complete resolution of her symptoms. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Early suspicion and detection of pernicious anemia in the ED can prevent serious and permanent hematologic and neurologic damage and the development of other autoimmune disorders.
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The emerging 2022 human mpox virus outbreak has presented with unique disease manifestations challenging prior case definitions. ⋯ We present a case of a 42-year-old transgender woman with human immunodeficiency virus controlled on antiretroviral therapy, presenting with sore throat, who, after three emergency department visits, was found to have acute tonsillitis complicated by airway obstruction secondary to mpox. WHY SHOULD AN EMERGENCY PHYSICIAN BE AWARE OF THIS?: Sore throat is a common presentation to the emergency department. mpox should be placed on the list of differential diagnoses when evaluating patients who present with pharyngitis to avoid complications or a missed diagnosis.
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Patients presenting to the emergency department with paralysis can have a wide differential diagnosis. Thyrotoxic periodic paralysis (TPP) is a rare disorder causing transient flaccid paralysis in the setting of thyrotoxicosis and hypokalemia. It has been reported in Asian male populations predominantly, and the diagnosis is rarely considered in non-Asian populations. Recent research has identified cases in patients with diverse ethnic backgrounds, although epidemiologic data from the United States are very limited. ⋯ Young Hispanic men presenting with paralysis should be evaluated for TPP, as the prevalence in this population may be higher than estimated previously. Management of TPP involves treatment of underlying hyperthyroidism and cautious potassium repletion, with an initial dose of no more than 60 mEq/L of potassium chloride to avoid rebound hyperkalemia.
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Cervical spinal (c-spine) injuries range greatly in severity from minor ligamentous injuries to osteoligamentous instability with spinal cord injuries. Initial evaluation begins with stabilization as needed and immediate immobilization. Current practice as to whether the c-spine can be cleared clinically without radiographic evaluation is often guided by using the National Emergency X-Radiography Utilization Study Low-Risk Criteria and the Canadian C-Spine Rule. Under these clinical decision guidelines, stable trauma patients presenting with alcohol intoxication cannot have the c-spine cleared clinically and imaging should be "considered." ⋯ This study's results suggest that it is a safe clinical practice to defer CT imaging for patients presenting to the ED with alcohol intoxication and low suspicion for c-spine injury per history and examination.
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Observational Study
Emergency Department-Initiated Buprenorphine Treatment in a Population with a High Rate of Homelessness: An Observational Study.
Buprenorphine is an effective treatment for opioid use disorders. A previous randomized trial comparing emergency department (ED)-initiated buprenorphine to standard care showed dramatic improvement in follow-up. This is encouraging, but must be replicated to understand the generalizability of buprenorphine treatment. ⋯ In this descriptive study of an ED-initiated buprenorphine protocol, follow-up was less than that reported in a previous randomized controlled trial. Two important differences between our study and the randomized trial are the high rate of homelessness and the fact that not every patient received a prescription for buprenorphine. The efficacy of ED-initiated treatment may depend on certain population characteristics.