internal medicine. The branch of medicine that deals with the diagnosis and treatment of diseases affecting the internal organs of the body, especially in adults.
Heart murmurs can generally be divided into two categories: 1  Murmurs that are not due to structural problems in the heart also called innocent murmurs or functional murmurs..  Murmurs which are due to a structural problem of the heart (such as a hole in the heart, a narrowed heart valve or a leaky heart valve). These murmurs require further evaluation and follow-up with a cardiologist.
Heart murmurs are most often caused by defective heart valves. A stenotic heart valve has a smaller-than-normal opening and can't open completely.A valve may also be unable to close completely. This leads to regurgitation, which is blood leaking backward through the valve when it should be closed.nnocent heart murmurs are sounds made by the blood circulating through the heart's chambers and valves or through blood vessels near the heart.