different types of heart murmurs
Many heart murmurs are harmless. These types of murmurs are called innocent murmurs. They will not cause any symptoms or problems. Innocent murmurs do not need treatment. Other heart murmurs may indicate an abnormality in the heart. These abnormal murmurs can be caused by: 1  Problems of the aortic valve (aortic regurgitation, aortic stenosis)  Problems of the mitral valve (chronic or acute mitral regurgitation, mitral stenosis)