Syncope and Methemoglobinemia Preceded by Amyl Nitrite 'Popper' Inhalation.

Introduction: Methemoglobinemia represents an uncommon but potentially serious cause of presentation to the emergency department, resulting in hypoxemia and even death. The symptoms and clinical findings in this condition can be nonspecific and therefore methemoglobinemia can be easily missed if the clinician is not familiar with it. This report presents a case caused by recreational drug use which has rarely been documented previously.

NK1 antagonists attenuate tau phosphorylation after blast and repeated concussive injury.

Exposure to repeated concussive traumatic brain injury (TBI) and to blast-induced TBI has been associated with the potential development of the neurodegenerative condition known as chronic traumatic encephalopathy (CTE). CTE is characterized by the accumulation of hyperphosphorylated tau protein, with the resultant tau tangles thought to initiate the cognitive and behavioral manifestations that appear as the condition progresses. However, the mechanisms linking concussive and blast TBI with tau hyperphosphorylation are unknown.

A Free Diver with Hemoptysis and Chest Pain.

[Full article available at http://rimed.org/rimedicaljournal-2019-02.asp].

Calling All Curators: A Novel Approach to Individualized Interactive Instruction.

With the increasing influence of the "Free Open Access Medical Education" (FOAM or FOAMed) movement, it is critical that medical educators be engaged with FOAM in order to better inform and direct their learners, who likely regularly consume these materials. In 2012, the Accreditation Council for Graduate Medical Education (ACGME)/Residency Review Committee (RRC) began to permit 20% of emergency medicine (EM) residents' didactics hours to be earned outside of weekly conference, as "Individualized Interactive Instruction" (III) credits.1 We describe a digital course in EM, "Asynchrony," as an approach to FOAM to meet these III standards.

Severe Hyperkalemia: Can the Electrocardiogram Risk Stratify for Short-term Adverse Events?

Introduction: The electrocardiogram (ECG) is often used to identify which hyperkalemic patients are at risk for adverse events. However, there is a paucity of evidence to support this practice. This study analyzes the association between specific hyperkalemic ECG abnormalities and the development of short-term adverse events in patients with severe hyperkalemia.