pacemaker

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pacemaker
  • noun
    An artificial device for stimulating the heart muscle and regulating its contractions. (The most common forms of heart failure are treated with drugs and electrical devices such as pacemakers and implanted defibrillators, but if symptoms continue to worsen, other therapies are needed.)
    another term for pacesetter (That is some record for a horse used primarily in those races as a pacemaker.)

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