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Home » Heart Diseases » Endocarditis » What are the Chances of Surviving Endocarditis?

What are the Chances of Surviving Endocarditis?

Saima Andrabi, MS, Clinical BiochemistryBy Saima Andrabi, MS, Clinical BiochemistryUpdated:February 4, 20205 Mins Read
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1 Endocarditis
2 Prognosis or Outlook of Endocarditis
3 Role of Surgery in the Prognosis of Infective Endocarditis
4 Can Valvular Surgery Decrease Mortality Rates in Endocarditis Patients?

Endocarditis

Endocarditis or infective endocarditis is an inflammation of the heart valves and endocardium (inner lining of the heart chambers) due to infections caused by some infectious organisms like bacteria or fungi. These infectious organisms can enter the bloodstream and settle within the heart. In most cases, these organisms are streptococci (“strep”), staphylococci (“staph”) or species of bacteria that normally reside on our body surfaces. These infectious organisms get entry into our bloodstream through skin cuts and injuries, dental or medical procedures, skin disorders or skin pricks (in case of intravenous drug users).

Overgrowth of bacteria is one of the main causes of endocarditis. These bacteria normally reside on our inner and outer body surfaces but we can give them entry into our blood stream by eating or drinking. Normally our immune system protects us from such infectious encounters by fighting off germs but this process fails in some people with compromised immune functions.

In people with infective endocarditis, the germs travel through their bloodstream and then enter into the heart, where they multiply in large numbers and ultimately lead to the inflammation. Besides bacteria, endocarditis can also be caused by fungi or other germs.

There are many signs and symptoms of endocarditis. Some of them may include:

  • High body temperature (over 100 degrees)
  • Night sweats
  • Rashes on Skin
  • Pain, tenderness, redness or swelling
  • Unhealed wound or cuts
  • Warm, red, draining sores
  • Sore and scratchy throat
  • Sinus drainage
  • Nasal congestion
  • Persistent cough
  • Presence of white spots on your mouth and tongue

Prognosis or Outlook of Endocarditis

Despite various diagnostic and therapeutic procedures, infective endocarditis is associated with high mortality and serious complications. Assessing the prognosis of endocarditis for patients involves differentiation of three clinical procedures –

(a) prognostic assessment at admission

(b) early risk reassessment during the first week of antibiotics, and

(c) short- and long-term prognosis after discharge

These are the three important parameters for diagnosis and prognosis of endocarditis patients. These parameters are based on physical examination of patients like heart failure signs, echocardiography for checking periannular complications, and blood cultures for detecting S. aureus infections.

If left untreated, infective endocarditis can be fatal. After treatment, the death risk depends on various factors like age of a person, infection duration, the presence of a replacement heart valve, causative organism, and the amount of damage done to the heart valves. Nevertheless, with an appropriate antibiotic treatment, most people can survive.

With the help of a proper diagnosis and medical treatment, more than 90 percent of patients suffering from bacterial endocarditis can recover. It has been found that those patients who have endocarditis in right side of their heart usually have a better outlook than those with left-side endocarditis. In some cases, it has been found that endocarditis caused by fungi, has a low prognosis when compared with bacterial endocarditis.

There are various serious complications of endocarditis such as congestive heart failure, emboli (floating blood clots) that can enter into our brain, lungs or coronary arteries, and kidney complications. Untreated acute endocarditis can be risky in less than 6 weeks. Without treatment, subacute endocarditis can cause death within 6 weeks to one year.

Infective endocarditis (IE) being a serious disease has an elevated short- and long-term mortality. There is a poor prognosis for IE not only due to the high in-hospital mortality rate and high in-hospital mortality complications but also due to late sequelae that appear once the infection is over.

Recent progresses in diagnostic techniques and antibiotic treatment has improved the short-term prognosis for infective endocarditis (IE) due to prior detection of complications.

You can access our Trusted Resources about Endocarditis here.

Role of Surgery in the Prognosis of Infective Endocarditis

Infective endocarditis is one of the deadly diseases associated with an in-hospital mortality rate of 10–30%. Among them, 50% required cardiac surgery in their acute phase. The two main objectives of heart surgery in such patients mainly involve complete removal of the infected tissue and renewal of cardiac morphology, including repair or replacement of the affected valves. During the operation, different types of valves such as a biological valve, mechanical valve, autograft and homograft may be used as required.

According to The 2014 American College of Cardiology/American Heart Association(ACC/AHA) guidelines, a biological valve is recommended in patients of 65 years age or older, while a mechanical valve is appropriate for patients under 65 years of age, but there are no specific guidelines or recommendations for surgery of infective endocarditis.

It has been suggested that mechanical valves provide a considerably better prognosis in infective endocarditis patients. Moreover, there were considerable differences in the clinical features of patients with biological valve compared to patients receiving a mechanical valve. A study suggested that any mortality risk of the biological valve group patients was significantly higher than that of the mechanical valve group patients.

Can Valvular Surgery Decrease Mortality Rates in Endocarditis Patients?

According to an investigation published in the November 23/30 issue of JAMA, it has been suggested that approximately two-thirds of patients with heart failure and infective endocarditis require valvular surgery, which has been associated with a substantial reduction in the risk of mortality in hospital and one year after the surgery.

Some prior studies have suggested that the risk of mortality due to infective endocarditis and heart failure can be decreased with the help of valvular surgery. The procedure has been strongly recommended by the American College of Cardiology/American Heart Association and European Society of Cardiology.

Researchers have found that patients who have undergone a valvular surgery had a very low mortality rate as compared to patients who had received medical treatment only. Mortality rate of patients with valvular surgery was found to be 20.6 percent and mortality rate was found to be 44.8 percent in patients who were on medical treatment only. Furthermore, the researchers observed that valvular surgery patients had a one-year mortality rate of 29.1% compared to 58.4% in patients with only medical therapy.

Saima Andrabi, MS, Clinical Biochemistry
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Saima Andrabi is a clinical biochemist and is passionate about driving knowledge platforms for creating health awareness in the general public. She pursued her master’s degree in clinical biochemistry from University of Kashmir, Srinagar followed by an internship from National Institute of pathology, New Delhi. Her areas of interest include molecular biology, immunology, medical physiology and forensic medicine. Saima is very much interested in writing medical content and wants to create awareness in public through this platform. Currently, Saima Andrabi is working at Maxinov Solutions Private LTD as a research associate and is associated with DiseaseFix as a medical content writer.

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