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
[{'content': 'Which of the following is not a contradiction for use of digitalis? \nSelect and explain. \nA. Acute rheumatic carditis, B. Thyrotoxicosis, C. WPW Syndrome, D. Hyperkalemia', 'role': 'user'}, {'content': 'Answer: D \nExplanation: Ref:KDT 6/e p499 Digitalis compounds arecontraindicated in patients who are hypokalemic, or who have atrioventricular block or Wolff-Parkinson-White (WPW) syndrome. Impaired renal function leads to enhanced plasma levels of digoxinbecause digoxin is eliminated by the kidneys.', 'role': 'assistant'}]