90 مناظر · 01/09/24
Contraction of the heart
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01/17/24
Premature ventricular contractions (PVCs) are extra, abnormal heartbeats that begin in one of your heart's two lower pumping chambers (ventricles). These extra beats disrupt your regular heart rhythm, sometimes causing you to feel a flip-flop or skipped beat in your chest.
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90 مناظر · 01/09/24
