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A 22-year-old man presents to the emergency department with…

A 22-year-old man presents to the emergency department with a burning cut on his left arm. The patient states that he noticed a few cuts along his arm which have become more swollen and are associated with bumps. He now feels fatigued and has a fever. The patient is otherwise healthy and is not currently taking any medications. The patient lives alone, is a student, and owns a new cat. His temperature is 101°F (38.3°C), blood pressure is 120/88 mmHg, pulse is 97/min, respirations are 14/min, and oxygen saturation is 99% on room air. Physical exam is notable for the finding in the image (see below). There is notable tender lymphadenopathy in the ipsilateral antecubital fossa and axilla. Which of the following is the most likely infectious etiology of this patient’s symptoms? 

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A 3-year-old boy is admitted to the Emergency Department in…

A 3-year-old boy is admitted to the Emergency Department in acute respiratory distress. The patient has T: 40°C (104°F), RR: 70/min, and HR:130/min. Auscultation of the lungs is unremarkable. An examination of the throat reveals an exudate in the posterior pharynx that is yellowish and membranous. Bleeding occurs when it is scraped and removed. The parents of the child reveal that the child has received no prior immunizations. A throat culture was ordered and worked up specifically for an organism that selectively grows on cystine tellurite agar. What organism is causing this child’s disease?

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A 68-year-old female presents to the Emergency Department wi…

A 68-year-old female presents to the Emergency Department with several days of frequent, non-bloody, watery stools. She recently completed a course of clindamycin two weeks ago for a tooth infection. Her medical history is notable for hypertension and hyperlipidemia for which she takes amlodipine and atorvastatin. She has no sick contacts and has not traveled recently. Vital signs: T 98.6°F, BP 118/82 mmHg, HR 98/min, RR 14/min, and oxygen saturation is 98% on room air. On exam, her abdomen is soft, non-distended, and diffusely tender to palpation in the lower quadrants bilaterally. Which of the following is the initial diagnostic test of choice for this patient?

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A 54-year-old male with HIV presents to the Emergency Depart…

A 54-year-old male with HIV presents to the Emergency Department with worsening dry cough, now with increasing shortness of breath. He is currently on antiretroviral therapy. On exam, his temperature is 98.4°F (36.9°C), blood pressure is 124/83 mmHg, pulse is 110/min, respirations are 24/min, and oxygen saturation is 91% on room air. Diffuse crackles are present upon auscultation of bilateral lungs. His most recent CD4 cell count is 140/mm3 and an arterial blood gas reveals a PaO2 of 60 mmHg. CXR is noted to have extensive interstitial infiltrates. Which of the following is the most appropriate treatment for the patient at this time?

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Which of the following statements about the diagnosis of hum…

Which of the following statements about the diagnosis of human immunodeficiency virus (HIV) is TRUE?

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A 3-year-old girl presents with a 1-day history of irritabil…

A 3-year-old girl presents with a 1-day history of irritability and weakness in her legs. Neurologic exam reveals an ascending symmetrical paralysis with cranial neuropathy. A lumbar puncture is performed and cerebrospinal fluid is found to have a normal glucose level,

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Which of the following statements best describes mumps?

Which of the following statements best describes mumps?

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A 36-year-old male presents with a 3-month history of a prod…

A 36-year-old male presents with a 3-month history of a productive cough and reports that the cough produces a scant amount of yellow sputum, which is occasionally blood-streaked. He has also had an evening temperature rise (101° F) for the past 3 months. He has lost a significant amount of weight during this period. Patient is a non-smoker. He emigrated from India 5 years ago, and his medical records are not available. Coarse upper lobe crackles and rhonchi are heard bilaterally. CXR reveals multiple bilateral upper lobe cavities with surrounding infiltrate. Which of the following clinical findings would confirm your diagnostic suspicion?

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A 43-year-old female is admitted for evaluation of nausea, e…

A 43-year-old female is admitted for evaluation of nausea, emesis, ataxia, and dizziness. Previous medical history reveals HIV (+) status for 4 years with the most recent CD4 count of 100/mm3. Vital signs and neurologic examination are normal. MRI shows 2 ring-enhancing lesions of the basal ganglia, each approximately 1 cm in diameter. The patient is treated with sulfadiazine plus pyrimethamine and she is discharged following rehydration. Within 1 week, the patient’s symptoms improve and a second MRI 4 weeks later shows a significant reduction in the size of the lesions. Which of the following conditions is the most likely diagnosis for this patient?

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The temporomandibular joint (between your jaw and skull) is…

The temporomandibular joint (between your jaw and skull) is a synovial joint. It contains within it a fibrocartilaginous articular disk. True or False: damage to the center of this disk is unlikely to heal on its own without surgical repair.

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