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If you have a harmless heart murmur, more commonly known as an innocent heart murmur, you likely won't have any other signs or symptoms. An abnormal heart murmur may cause no obvious other signs or symptoms, aside from the unusual sound your doctor hears when listening to your heart with a stethoscope. But if you have these signs or symptoms, they may indicate a heart problem: Skin that appears blue, especially on your fingertips and lips.
A diastolic murmur occurs when the heart muscle relaxes between beats. A systolic murmur occurs when the heart muscle contracts. Systolic murmurs are graded by intensity (loudness) from one to six. A grade 1/6 is very faint, heard only with a special effort.A grade 6/6 is extremely loud.nnocent heart murmurs are sounds made by the blood circulating through the heart's chambers and valves or through blood vessels near the heart.