Murmurs are extra heart sounds that are produced as a result of turbulent blood flow which is sufficient to produce audible noise. Murmurs may be present in normal hearts without any heart disease. These types of murmurs, often referred to as innocent murmurs, usually cause no trouble for the patient. Murmurs may also be the result of various problems, such as narrowing or leaking of valves, or the presence of abnormal passages through which bloo...
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