Sun28November0628PM 2

Regarding infective endocarditis are the following statements true or false?

True / False

The modified Duke's criteria have high sensitivity for patients with prosthetic valves suspected of having infective endocarditis Incorrect answer selected

The commonest cause is Streptococcus viridans Correct

Antibiotic prophylaxis is no longer routinely recommended Correct

Predisposing factors such as intravenous drug abuse and mitral valve disease are major factors in the modified Duke's criteria Incorrect answer selected

Antibiotic therapy is curative in 75% of patients Correct

Explanation

Predisposing factors such as intravenous drug abuse and mitral valve disease are minor factors in the modified Duke's criteria.

Major criteria include the presence of positive blood cultures and

A positive echo for either an intracardiac abscess or

Dehiscence of a prosthetic valve, or

An oscillating intracardiac mass.

The modified Duke criteria are sensitive in patients with native valves but not in those with prosthetic valves.

Staphylococcus aureus is now more common than Streptococcus viridans.

The National Institute for Health and Care Excellence (NICE) no longer recommend routine preoperative antibiotic prophylaxis.

Antibiotics are curative in 50% of cases.

Reference:

Martinez G, Valchanov K. Infective endocarditis. Contin Educ Anaesth Crit Care Pain. 2012;12:134-139.

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