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16 04, 2021

Q251

By |2021-04-19T20:36:59+00:00April 16, 2021|Question Banks|0 Comments

An 80-year-old woman dies after a long history of progressive memory loss, apraxia, and recurrent episodes of confusion. In the last months of life she was bedridden and unable to recognize familiar faces and objects. The pathologist identifies numerous flame-shaped intracytoplasmic inclusions in neurons of the neocortex and hippocampus. These consist of paired helical filaments (PHFs) on electron microscopy. Which of the following biochemical changes most likely accounts for the development of PHFs in this condition?

16 04, 2021

Q254

By |2021-04-19T20:37:01+00:00April 16, 2021|Question Banks|0 Comments

A scientist wishes to study free radical production under ischemic conditions. He decides to produce cerebral ischemia by tying off an artery of the brain. Ligation of which of the following arteries would be most likely to produce significant ischemic damage?

16 04, 2021

Q255

By |2021-04-19T20:37:02+00:00April 16, 2021|Question Banks|0 Comments

A 52-year-old woman has long-standing rheumatoid arthritis (RA) and is being treated with corticosteroids and nonsteroidal anti-inflammatory drugs (NSAIDs). Which of the following cardiac complications may arise in this clinical setting?

16 04, 2021

Q257

By |2021-04-19T20:37:03+00:00April 16, 2021|Question Banks|0 Comments

A 35-year-old woman notices a change in the appearance of a mole on her neck. Physical examination reveals that the lesion is an irregular, nodular, superficial mass with a variegated appearance. Biopsy demonstrates a primary malignant tumor. Which of the following factors is most predictive of the patient's long term prognosis?

16 04, 2021

Q258

By |2021-04-19T20:37:04+00:00April 16, 2021|Question Banks|0 Comments

A 43-year-old, insulin-dependent diabetic patient is diagnosed with hypertension and begins therapy with an antihypertensive agent. Three days later, he measures his blood glucose at home and finds that it is 53 mg/dL. He recalibrates his glucose testing apparatus and repeats the test, only to find that the first reading was accurate. He is concerned that his hypoglycemia did not produce the normal premonitory signs and symptoms. Which of the following medications was most likely prescribed to treat his hypertension?

16 04, 2021

Q259

By |2021-04-19T20:37:04+00:00April 16, 2021|Question Banks|0 Comments

A 33-year-old woman presents with fever, vomiting, severe irritative voiding symptoms, and pronounced costovertebral angle tenderness. Laboratory evaluation reveals leukocytosis with a left shift; blood cultures indicate bacteremia. Urinalysis shows pyuria, mild hematuria, and gram-negative bacteria. Which of the following drugs would besttreat this patient's infection?

16 04, 2021

Q240

By |2021-04-19T20:37:05+00:00April 16, 2021|Question Banks|0 Comments

A 55-year-old man had been in good health since receiving a heart transplant for severe atherosclerotic disease. Five years after transplantation, the patient died suddenly, without any premonitory symptoms, while working in his garden. He had been maintained on cyclosporin since his transplant. Which of the following complications would most likely be found at autopsy in the transplanted heart?

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