Medical education for healthcare students & professionals, presented in short-form, high-yield videos.

Sep 3, 2025 · By interpreting heart sounds, clinicians can identify normal cardiac function, valve closures, and detect early signs of heart disease. Understanding S1, S2, S3, and S4 sounds, along …

In healthy adults, there are two normal heart sounds, often described as a lub and a dub that occur in sequence with each heartbeat. These are the first heart sound (S 1) and second heart sound (S 2), …

Heart sounds are brief, transient sounds produced by valve opening and closure; they are divided into systolic and diastolic sounds. Gallops are diastolic sounds (third heart sound [S3] and fourth heart …

Oct 1, 2025 · Learn what normal heart sounds are, how to identify them, and when unusual sounds may indicate a problem. Stay informed about your heart health.

Jan 26, 2026 · Key Takeaways S1 and S2 are the normal heart sounds you hear when the heart valves close. Heart murmurs are extra sounds that can be heard during systole, diastole, or as a continuous …

There are two normal heart sounds: S1 and S2. S1 is caused by the closing of atrioventricular valves at the beginning of systole; whereas S2 is caused by the closing of aortic and pulmonary valves …