What does "Regular S2" 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.
"Regular S2" refers to a normal sound that a doctor hears when listening to a patient's heart. The heart makes two sounds in each cycle, often described as "lub-dub." The "S2" is the "dub" part of this sound, which happens when the heart's valves close after blood is pumped out. If the S2 sound is regular, it means the heart is working as it should.
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