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  • Premature Ventricular Contractions (PVC): Symptoms, Cause . . . - WebMD
    Premature Ventricular Contraction (PVC) Symptoms If you get PVCs once in a while, you may feel like your heart “skipped a beat,” but that's not what happens They actually cause an extra beat
  • Premature ventricular contractions (PVCs)
    Premature ventricular contractions are a common type of irregular heartbeat (arrhythmia) PVC are also called: Premature ventricular complexes; Ventricular premature beats; Ventricular extrasystoles; Occasional premature ventricular contractions in people without heart disease usually aren't a concern and likely don't need treatment
  • Premature Ventricular Contractions (PVCs) - Cleveland Clinic
    In PVCs, that first signal starts in one of your ventricles As a result, the signal travels differently through your heart and causes an irregular heartbeat Sometimes, a PVC may feel like your heart “skipped a beat ” Who is most likely to have premature ventricular contractions?
  • Solved! What is CPVC and What is it Used For? - Bob Vila
    The term PVC stands for polyvinyl chloride, and it’s a durable, man-made plastic with many uses During the manufacturing process, stabilizers are added to help the plastic resist oxidation and
  • Polyvinyl chloride - Wikipedia
    Polyvinyl chloride (alternatively: poly(vinyl chloride), [6] [7] colloquial: vinyl [8] or polyvinyl; abbreviated: PVC [8]) is the world's third-most widely produced synthetic polymer of plastic (after polyethylene and polypropylene) About 40 million tons of PVC are produced each year [9] PVC comes in rigid (sometimes abbreviated as RPVC) and
  • When to Worry About Premature Ventricular Complexes (PVCs)
    A premature ventricular complex (PVC, or premature ventricular contraction) is an extra electrical impulse arising from one of the heart's ventricles This extra impulse happens before the next normal heartbeat has a chance to occur
  • When to worry about premature ventricular contractions (PVCs) - Healthline
    A premature ventricular contraction (PVC) is a heartbeat that starts in a different part of the heart than usual A PVC (or lots of PVCs) can make you feel like your heart is fluttering
  • 聚氯乙烯 - 维基百科,自由的百科全书
    聚氯乙烯(英語: Polyvinyl Chloride ,簡稱PVC)是氯乙烯经加成聚合反应得到的的高分子材料。 是 聚乙烯 和 聚丙烯 之後,第三種最廣泛生產的合成塑膠聚合物。


















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