Regular S1

What does "Regular S1" 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.

Explanation

"Regular S1" refers to a normal sound that a doctor hears when listening to a patient's heart with a stethoscope. The heart makes two sounds in each cycle, often described as "lub-dub". The "lub" (S1) is the sound of the heart valves closing at the start of the heart's contraction. If the S1 sound is regular, it means that the heart is functioning normally in that aspect.

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