They are the result of vibrations caused by abnormal blood flow patterns. A murmur does not necessarily indicate a disease or disorder, and all heart disorders do not cause murmurs. The grading is on a scale with grade I being barely detectable. Also used to describe a murmur is the stage of the heartbeat when the murmur is heard. The location where the health care provider hears the murmur loudest is also often noted.
Emotional stress can sometimes cause a temporary change in the heart sounds.
Heart sounds Please read this Important notice . Please read it.