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Old 07-10-2015
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Default Repeated USMLE Questions 16

A 28 year old woman visits her physician for evaluation of bilateral proximal muscle weakness and muscle pain. Her symptoms started last week and her pain is getting worse. Her records indicates alcohol abuse and cocaine addiction. She is HIV positive and she takes zidovudine. She also takes simvastatin for hypercholesterolemia. A muscle biopsy shows significant changes in mitochondrial histology.
What is the most likely etiology of this patient's condition?
A- Alcohol abuse
B- Cocaine addiction
C- Zidovudine
D- Simvastatin
E- HIV infection
Answer: http://medical-usmle.com/?p=849
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sohail mirza (08-09-2015)



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Old 07-10-2015
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Zidovudine. It causes mitochondrial myopathy. Might also see ragged red fibers.
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sohag100 (07-10-2015)



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