Which Of The Following Drugs Is The Most Likely Cause Of This Presentation?

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CaffeinatedSquirrel

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A 50-year-old male currently being treated for an H. pylori infection presents with a sudden-onset fever, worsening nausea, and vomiting. He mentions he’s had reduced urine output over the last two days. Laboratory tests reveal an increased blood plasma creatinine concentration and urine microscopy demonstrates red blood cells, leukocytes, and leukocyte casts. Which of the following drugs in this patient’s treatment regimen is the most likely cause of their presentation?

A. Bismuth subsalicylate
B. Proton pump inhibitor (PPI)
C. Metronidazole
D. Tetracycline

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