What does "First heart sounds" 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.
"First heart sounds" refer to the noises that a doctor hears when listening to your heart with a stethoscope. These sounds occur when the heart's valves close, causing the blood flow to momentarily stop. They are usually described as a "lub" sound and are a normal part of the heart's rhythm. These sounds can help doctors determine if the heart is functioning properly.
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