Endocarditis, also called infective endocarditis (IE), is an inflammation of the inner lining of the heart. The most common type, bacterial endocarditis, occurs when germs enter your heart. These germs come through your bloodstream from another part of your body, often your mouth. Bacterial endocarditis can damage your heart valves. If untreated, it can be life-threatening. It is rare in healthy hearts.
Risk factors include having
- An abnormal or damaged heart valve
- An artificial heart valve
- Congenital heart defects
The signs and symptoms of IE can vary from person to person. They also can vary over time in the same person. Symptoms you might notice include fever, shortness of breath, fluid buildup in your arms or legs, tiny red spots on your skin, and weight loss. Your doctor will diagnose IE based on your risk factors, medical history, signs and symptoms, and lab and heart tests.
Early treatment can help you avoid complications. Treatment usually involves high-dose antibiotics. If your heart valve is damaged, you may need surgery.
If you're at risk for IE, brush and floss your teeth regularly, and have regular dental checkups. Germs from a gum infection can enter your bloodstream. If you are at high risk, your doctor might prescribe antibiotics before dental work and certain types of surgery.
NIH: National Heart, Lung, and Blood Institute
- Bacterial Endocarditis (American Academy of Family Physicians) Also in Spanish
- Endocarditis (Mayo Foundation for Medical Education and Research) Also in Spanish
- Heart Inflammation (National Heart, Lung, and Blood Institute)
- Infective Endocarditis (Merck & Co., Inc.)
- What Is Infective Endocarditis? (American Heart Association) - PDF
Diagnosis and Tests
- What Is Transesophageal Echocardiography? (National Heart, Lung, and Blood Institute)
Prevention and Risk Factors
- Prevention of Infective (Bacterial) Endocarditis: Wallet Card (American Heart Association) - PDF
- ClinicalTrials.gov: Endocarditis (National Institutes of Health)
Journal Articles References and abstracts from MEDLINE/PubMed (National Library of Medicine)
- How the Heart Works (National Heart, Lung, and Blood Institute)