What does "Heart murmur" mean in a report or doctor's letter? In our medical dictionary, you will find a patient-friendly explanation of the meaning of this medical term.
A heart murmur is a sound that a doctor hears when listening to a person's heart with a stethoscope. It's different from the normal sound of a heartbeat. It's caused by blood flowing more turbulently than usual through the heart. This can happen for many reasons, some harmless and some potentially serious.
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