A device used to defibrillate the heart.
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1. Any agent or measure, e.g., an electric shock, that arrests fibrillation of the ventricular muscle and restores the normal beat. 2. The machine designed to administer a defibrillating electric shock.
- external d. a d. that delivers its defibrillating shock through the unopened chest wall.

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de·fi·bril·la·tor (')dē-'fib-rə-.lāt-ər, -'fīb- n an electronic device used to defibrillate a heart by applying an electric shock to it

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the apparatus used for issuing a measured electrical current to a patient's heart in defibrillation. Several types of defibrillator exist, including those that are semi- or fully automated to recognize abnormal rhythms and to deliver the appropriate shock, those that are fully operator-dependent, and those that are implanted into the patient's body in a similar manner to a pacemaker. Different types can deliver DC or AC currents.

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de·fib·ril·la·tor (de-fib″rĭ-laґtər) an electronic apparatus used to counteract atrial or ventricular fibrillation by the application of brief electroshock to the heart, either directly or through electrodes placed on the chest wall.

Medical dictionary. 2011.

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  • defibrillator — /dee fuy breuh lay teuhr, fib reuh /, n. Med. an agent or device for arresting fibrillation of the atrial or ventricular muscles of the heart. [1955 60; DE + FIBRILL(ATION) + ATOR] * * * …   Universalium

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