This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Cardiovascular system, Subject name: Pharmacology
Digoxin toxicity it can be increased by all except 
Select and explain. 
A. Renal impairment, B. Hyperkalemia, C. Hypetmagmesimia, D. Hypercalcemia
B: Hyperkalemia
Answer: B: Hyperkalemia 
Explanation: Hyperkalemia is the usual electrolyte abnormality precipitated by digoxin toxicity, primarily in the acute setting. Hyperkalemia may be associated with acute renal failure that subsequently precipitatesdigoxin toxicity. Chronic digoxin toxicity does not usually causehyperkalemia. Refer katzung 11e p216