What Is The Lub Dub //top\\ Jun 2026

| Normal Finding | Potential Issue (Murmur or Click) | | :--- | :--- | | Clear, distinct "Lub" | (a swishing sound) – often harmless, but can indicate a leaky or stiff valve. | | Clear, distinct "Dub" | Splitting (hearing “Lub-Du-dub”) – can be normal during breathing, or a sign of heart disease. | | Regular timing | Irregular rhythm (e.g., “Lub-dub...Lub...dub...Lub-dub”) – may indicate arrhythmia. |

The short pause after the “Dub” and before the next “Lub” is the heart with blood. A healthy rhythm sounds like: Lub-Dub...pause...Lub-Dub...pause. what is the lub dub

To prevent blood that was just pumped out from falling back into the heart, the aortic and pulmonary valves snap shut. | Normal Finding | Potential Issue (Murmur or