Year Woman Presents Explained for Students (Easy Guide)

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Original Question

A 69-year-old woman presents to the emergency room complaining of chest discomfort and shortness of breath. The symptoms started suddenly 1 day ago. She has no prior history of chest pain, cardiac, or pulmonary conditions. She recently returned on an overnight flight from Europe. On physical examination, she is comfortable, blood pressure 130/80 mm Hg, pulse 90/min, respirations 18/min, and oxygen saturation 97%. The heart and lungs are normal on auscultation, and there is no edema or leg tenderness on palpation. A CXR and ECG are normal but a quantitative (ELISA) D-dimer assay is positive. Which of the following statements regarding the D-dimer assay is correct? سؤال 43 الإجابة a. it is sensitive but not specific b. it is specific but not sensitive c. it is neither specific nor sensitive d. a negative result suggests myocardial ischemia e. it is both sensitive and specific

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