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INFECTIVE endocarditis is an infection of the lining of the heart, most commonly the heart valves. The heart valves separate the upper heart chambers (atria) from the lower, and also the pumping chambers (ventricles) from the lungs and aorta from the right and left ventricles, respectively. They close to allow filling of the heart chambers and open to allow forward flow of blood from one chamber to the next.
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