A 68-year-old man is evaluated in the emergency department for a 5-day history of an asymptomatic rash on the upper back and upper arms. The lesions grew suddenly and are neither pruritic nor painful. The patient has had associated fevers. He has a
A 22-year-old man is evaluated for a skin eruption on his leg. The patient lives in Virginia and is active outdoors. One week ago, he found a black tick on his lower leg, which his roommate removed with a tweezers. Yesterday he developed diffuse
D. Exercise treadmill stress test. The correct answer is D: Exercise treadmill stress test. ... In this setting, an exercise treadmill stress test is the most appropriate noninvasive imaging study.
B. Exercise treadmill stress test. C. Implantable cardioverter-defibrillator placement. D. Tilt-table test. ... An exercise treadmill stress test can be valuable for identifying an exercise-induced arrhythmia.
Antinuclear antibody test results are negative, and anti-Ro/SSA antibody test results are positive.
A 35-year-old man is evaluated for a 2-year history of intermittent chest pain that is retrosternal, lasts for seconds to minutes, is unrelated to exertion, and does not radiate. It is occasionally associated with swallowing. Upper endoscopy is
A 37-year-old woman is evaluated in the emergency department for the acute onset of pain after 2 weeks of bloody diarrhea. The diarrhea has escalated to 15 times per day. She has ulcerative colitis that was diagnosed 2 years ago. She currently takes
A 27-year-old woman is evaluated during a follow-up visit for high blood pressure that manifested 4 months after she began taking an oral contraceptive pill. Despite stopping the oral contraceptive pill, her blood pressure has remained high.
Pseudothrombocytopenia is a laboratory artifact in which platelets drawn into an ethylenediaminetetraacetic acid (EDTA)-anticoagulated test tube clump and fail to be counted accurately by the automated counter, resulting in a
Low-risk patients without evidence of myocardial infarction can be evaluated with an exercise or pharmacologic stress test. ... However, a stress test in a patient with probable acute coronary syndrome could provoke an extension of her myocardial