Difficulty: Medium
Average Score: 85%
Simulated
Which may cause hyperkalemia?
Correct answer
A
Rationale
The correct answer is A: Renal failure. Renal failure can lead to hyperkalemia due to a decrease in potassium excretion by the kidneys. In renal failure, the kidneys are unable to properly regulate potassium levels, leading to an accumulation of potassium in the blood. Diarrhea (choice B) can actually cause hypokalemia by excessive loss of potassium through stool. Blood transfusion (choice C) and diaphoresis (choice D) do not directly cause hyperkalemia.