Скачать или смотреть Normal heart beat sound (lub-dub)

In this clear and educational explainer video, we break down the normal heart beat sound — “lub-dub” — and explain exactly what it represents during the cardiac cycle.
You’ll learn how normal valve closure creates heart sounds and how to recognize a normal rhythm on auscultation.

This video covers:
• What produces the “lub” (S1) sound
• What produces the “dub” (S2) sound
• The relationship between heart sounds and the cardiac cycle
• Which valves are involved in each sound
• Normal timing and characteristics of S1 and S2
• How to identify a normal heart sound during physical examination
• Why understanding normal sounds is essential before learning murmurs

Perfect for medical students, nurses, and anyone learning basic cardiovascular examination skills.

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