The American journal of emergency medicine
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Takayasu arteritis is a form of vasculitis that involves the aorta, its major branches, and the pulmonary arteries. Coronary artery involvement is not uncommon, and most frequently includes the ostia and proximal segments. ⋯ However, recent advances in imaging modalities-including magnetic resonance angiography, computed tomography (CT), sonography, and fluoro-deoxyglucose positron emission tomography (FDG-PET)/CT Isobe (2013) [2]-have facilitated earlier and more accurate diagnoses of this condition. Here we report a case in which imaging revealed stenosis in the ostia of the coronary artery.
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Case Reports
Not all ST-segment elevations are myocardial infarction: Hyperkalemia and Brugada phenocopy.
Several clinical conditions other than Brugada syndrome (BrS) can mimic acute ST-segment elevation myocardial infarction and Brugada phenocopies are a part of those conditions that can mimic either true BrS or acute myocardial infarction. Our manuscript shows an interesting and didactic case report of type-1 Class A Brugada phenocopy (BrP) induced by hyperkalemia and allow us to teach the systematic approach to the proper diagnosis of BrP. A prompt recognition of this clinical and electrocardiographic entity may expedite the initiation of appropriate treatments as illustrated in this case report.
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Objective The lack of a sensitive, practical bedside test for hypovolemia has rekindled interest in the shock index (heart rate divided by systolic blood pressure). Here, we compare the effect of blood donation on standing shock index values with its effect on values for the supine shock index and orthostatic change in shock indicies (OCSI).
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Observational Study
Nasal flaring as a clinical sign of respiratory acidosis in patients with dyspnea.
To determine whether the presence of nasal flaring is a clinical sign of respiratory acidosis in patients attending emergency departments for acute dyspnea. ⋯ Nasal flaring is a clinical sign of severity in patients requiring urgent care for acute dyspnea, which has a strong association with acidosis and hypercapnia.