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    • Electrocardiogram monitor machine at a hospital.
    Rights: Desigan Chinniah Published 21 July 2007 Size: 67 KB Referencing Hub media

    Electrocardiogram monitor at a hospital. This instrument measures the electrical potential generated by electrical activity in cardiac tissue, i.e. the nerve impulses as they go to the muscles in the heart.

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      Ventricular fibrillation

      A normal heart has a regular beat, and to pump blood, it is coordinated so that the upper chambers of the heart contract before the bottom chambers of the heart contract. When these contractions ...

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