Subacute bacterial endocarditis, also called SBE, is a potentially deadly condition that affects the heart. The condition is caused by an infection in the heart lining or valves, often due to bacterial growth. While the term subacute bacterial endocarditis may be cumbersome, there are several synonyms you may come across when researching the condition. Some synonyms for SBE include bacterial endocarditis, infective endocarditis, and bacterial valve disease. Understanding the different terms can be helpful in both research and conversation with healthcare providers. It is important to seek medical attention if you suspect you or a loved one might have SBE or any related conditions.