Property:AnswerDExp
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Abdominal X-ray is not the best initial radiographic test for suspected perforation of the stomach or bowel. Instead, a plain upright X-ray is more appropriate. Abdominal X-ray will often fail to detect free air under the diaphragm generated by a perforation, especially in tall people. Abdominal X-ray is the appropriate imaging test for suspected cases of bowel obstruction or ileus. +
The presence of Reed-Sternberg cells differentiates Hodgkin's from a non-hodgkin's lymphoma. +
This is the drug of choice for the prevention of PCP among HIV-positive patients with CD4+ T cell count of <200 cells/µLcells/mm<sup>3</sup>. +
Prominent ‘v’ wave results from increased volume of blood in right atrium during ventricular systole and is seen in tricuspid regurgitation. It is also seen with constrictive pericarditis and severe right ventricular failure. +
Lipid-laden macrophages, defined as an increased lipid content in alveolar macrophages, may be seen in BAL of patients with recurrent pulmonary aspiration. +
Acute pericarditis is the correct answer, with retrosternal pain radiating to the back and the left trapezius ridge. +
Administration of acetaminophen, colchicine, or narcotic analgesics may be reasonable if aspirin, even in higher doses, is not effective. +
'''Incorrect:''' Pulmonary embolism refers to the blockage of the pulmonary vasculature by a substance from elsewhere in the body, most commonly a blood clot. Pulmonary embolism is associated with sudden onset chest pain, tachycardia, and shortness of breath. Risk factors for pulmonary embolism include immobility, a past thromboembolic event, and any other causes of hypercoagulable state. +
'''Incorrect:''' While antitubercular therapy is indicated for the treatment of constrictive pericarditis secondary to tuberculosis, pericardial resection should be performed first. +
Cardiac MRI is not indicated in a person suspected of having pericarditis or acute coronary syndrome. +
Presence of a Q wave suggests an old infarct, and is not specific for acute pericarditis. +