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How Heart Valves Open and Close | 3D Cardiac Cycle Explained The human heart depends on four important valves to keep blood moving in the correct direction during every heartbeat. This educational 3D animation explains how the mitral, aortic, tricuspid, and pulmonary valves open and close in coordination with the cardiac cycle. As the heart ...
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This is what saves 600,000 people every year during a heart attack. Your heart is running out of time. Every second an artery stays blocked, heart muscle dies — and open-heart surgery isn’t fast enough. That’s why doctors use a coronary stent. A catheter snakes through your wrist or groin to the exact site of the blockage. A balloon inflates, and a tiny metal mesh tube — smaller than your fingertip — locks the artery open permanently. Circulation restored. Heart muscle saved. Patient walking out
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