Cardiology - Group 2 | Medical Hub

36. What is the most common cause of culture-negative endocarditis?

A) Prior antibiotics B) HACEK organisms C) Bartonella D) Coxiella burnetii

37. What is the recommended duration of antibiotics for native valve streptococcal endocarditis?

A) 4 weeks B) 2 weeks C) 6 weeks D) 8 weeks

38. What is the indication for surgery in endocarditis?

A) Heart failure, uncontrolled infection, emboli B) Fever alone C) Positive blood cultures D) Vegetation size >5 mm

39. What is the most common cause of myocarditis in children?

A) Enterovirus (Coxsackievirus) B) Adenovirus C) Parvovirus B19 D) Influenza

40. What is the most common ECG finding in myocarditis?

A) Non-specific ST-T changes B) Diffuse ST elevation C) ST depression D) Pathologic Q waves