This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: None, Subject name: Medicine
Antibiotic prophylaxis is recommended to prevent infective endocarditis in all dental procedures in patients having 
Select and explain. 
A. Previous coronory bypass surgery, B. Congestive cardiac failure, C. Prosthetic heart valves, D. Mitral valve prolapse syndrome
C: Prosthetic heart valves
Answer: C: Prosthetic heart valves 
Explanation: None