What is endocarditis?
Endocarditis is a serious inflammation of one of the four heart valves.
What are the symptoms for endocarditis?
Endocarditis may develop slowly or suddenly, depending on what germs are causing the infection and whether you have any underlying heart problems. Endocarditis signs and symptoms can vary from person to person.
Common signs and symptoms of endocarditis include:
- Flu-like symptoms, such as Fever and chills
- A new or changed heart murmur, which is the heart sounds made by blood rushing through your heart
- Aching joints and muscles
- Night sweats
- Shortness of breath
- Chest pain when you breathe
- Swelling in your feet, legs or abdomen
Endocarditis can also cause symptoms that are more uncommon. These include:
- Unexplained weight loss
- Blood in your urine, which you might be able to see or that your doctor might see when he or she views your urine under a microscope
- Tenderness in your spleen, which is an infection-fighting abdominal organ just below your rib cage on the left side of your body
- Janeway lesions, which are red spots on the soles of your feet or the palms of your hands
- Osler's nodes, which are red, tender spots under the skin of your fingers or toes
- Petechiae (puh-TEE-key-e), which are tiny purple or red spots on the skin, whites of your eyes, or inside your mouth
When to see a doctor
If you develop signs or symptoms of endocarditis, and if they don't go away, see your doctor as soon as possible — especially if you have risk factors for this serious infection, such as a heart defect or a previous case of endocarditis.
Although less serious conditions can cause similar signs and symptoms, you won't know for sure until you're evaluated by your doctor.
What are the causes for endocarditis?
Endocarditis occurs when germs enter your bloodstream, travel to your heart, and attach to abnormal heart valves or damaged heart tissue. Certain types of bacteria cause most cases, but fungi or other microorganisms also may be responsible.
Usually, your immune system destroys harmful bacteria that make it into your bloodstream. Even if bacteria reach your heart, they may pass through without causing an infection. However, bacteria that live in your mouth, throat or other parts of your body, such as your skin or your gut, can sometimes cause serious infections like endocarditis under the right circumstances.
Bacteria, fungi or other germs that cause endocarditis might enter your bloodstream through:
- Everyday oral activities. Activities such as brushing your teeth, or other activities that could cause your gums to bleed, can allow bacteria to enter your bloodstream — especially if you don't floss or your teeth and gums aren't healthy.
- An infection or other medical condition. Bacteria may spread from an infected area, such as a skin sore. Other medical conditions, such as gum disease, a sexually transmitted infection or certain intestinal disorders — such as inflammatory bowel disease — can also give bacteria the opportunity to enter your bloodstream.
- Catheters. Bacteria can enter your body through a catheter — a thin tube that doctors sometimes use to inject or remove fluid from the body. This is more likely to occur if the catheter is in place for a long period of time.
- Needles used for tattoos and body piercing. The bacteria that can cause endocarditis can also enter your bloodstream through the needles used for tattooing or body piercing.
- Intravenous (IV) illegal drug use. Contaminated needles and syringes are a special concern for people who use illegal intravenous (IV) drugs, such as heroin or cocaine. Often, individuals who use these types of drugs don't have access to clean, unused needles or syringes.
- Certain dental procedures. Some dental procedures that can cut your gums may allow bacteria to enter your bloodstream.
Bacteria can more easily attach to the lining of your heart (endocardium), if the lining's surface is rough. You're also more likely to develop endocarditis if you have faulty, diseased or damaged heart valves. However, endocarditis does occasionally occur in previously healthy individuals.
What are the treatments for endocarditis?
Many cases of endocarditis are successfully treated with antibiotics. Sometimes, surgery may be required to fix damaged heart valves and clean up any remaining signs of the infection.
If you have endocarditis, your doctor might recommend high doses of intravenous (IV) antibiotics in the hospital. Your doctor will use blood culture tests to help identify the organism that's causing your infection. Based on the results of your blood tests, your doctor will choose the most appropriate antibiotic or combination of antibiotics to fight the infection.
You'll generally spend a week or more in the hospital when you start taking IV antibiotics. This gives your doctor time to see if the antibiotics are working against your infection. You'll usually take antibiotics for several weeks to clear up the infection.
Once your fever and the worst of your signs and symptoms have passed, you might be able to leave the hospital and continue IV antibiotic therapy with visits to your doctor's office or at home with home-based care. You'll still need to see your doctor regularly to make sure your treatment is working.
It's important to tell your doctor about any signs or symptoms that may mean your infection is getting worse, such as:
- Joint pain
- Shortness of breath
Also, if you develop diarrhea, a rash, itching or joint pain, let your doctor know as soon as possible. These signs and symptoms may indicate you're having a reaction to your prescribed antibiotic.
If you have shortness of breath or swelling in your legs, ankles or feet after you start antibiotic treatment, see your doctor immediately. These signs and symptoms can be indicators of heart failure.
If the infection damages your heart valves, you may have symptoms and complications for years after treatment. Sometimes surgery is needed to treat persistent infections or to replace a damaged valve. Surgery is also sometimes needed to treat endocarditis that's caused by a fungal infection.
Depending on your condition, your doctor may recommend either repairing your damaged valve or replacing it with an artificial valve made of cow, pig or human heart tissue (biological tissue valve) or man-made materials (mechanical valve).
What are the risk factors for endocarditis?
If your heart is healthy, you could be less likely to develop endocarditis, although it is still possible. The germs that cause infection tend to stick to and multiply on damaged or surgically implanted heart valves, or on endocardium that has a rough surface.
People at highest risk of endocarditis are those who have:
- Artificial heart valves. Germs are more likely to attach to an artificial (prosthetic) heart valve than to a normal heart valve.
- Congenital heart defects. If you were born with certain types of heart defects, such as an irregular heart or abnormal heart valves, your heart may be more susceptible to infection.
- A history of endocarditis. Endocarditis can damage heart tissue and valves, increasing the risk of a future heart infection.
- Damaged heart valves. Certain medical conditions, such as rheumatic fever or infection, can damage or scar one or more of your heart valves. This can make them more prone to endocarditis.
- A history of intravenous (IV) illegal drug use. People who use illegal drugs by injecting them are at a greater risk of endocarditis. The needles used to inject drugs can be contaminated with the bacteria that can cause endocarditis.
Is there a cure/medications for endocarditis?
Cures and medications are outlined in the treatment section.