= countershock; n.
restoration of normal heart rhythm in patients with tachyarrhythmia (see arrhythmia). Electrical (synchronized) cardioversion involves the application of a controlled shock, synchronized with the R wave of the electrocardiogram, through electrodes placed on the chest wall of the anaesthetized patient. The apparatus is called a cardiovertor and is a modified defibrillator. It is synchronized (usually by pressing a specific button on the control panel) because inadvertent delivery of the shock at the peak of the T wave can trigger ventricular fibrillation. Pharmacological cardioversion is achieved through oral, or more commonly intravenous, drug administration.

The new mediacal dictionary. 2014.

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  • Cardioversion — Intervention ICD 9 CM 99.6 MeSH …   Wikipedia

  • cardioversión — aplicación de una descarga de energía eléctrica sincronizada con la onda R con objeto de reducir una fibrilación auricular, el fluter u otras arrítmias. A diferencia de la desfibrilación (que consiste en una descarga no sincronizada), la… …   Diccionario médico

  • Cardioversion — Défibrillation Placement des électrodes et passage du courant électrique intrathoracique …   Wikipédia en Français

  • Cardioversion — The conversion of one cardiac rhythm or electrical pattern to another, almost always from an abnormal to a normal one. This conversion can be accomplished by pharmacologic means using medications or by electrical cardioversion using a… …   Medical dictionary

  • cardioversion — noun Etymology: cardi + version (turning of an organ) Date: 1963 application of an electric shock in order to restore normal heartbeat …   New Collegiate Dictionary

  • cardioversion — /kahr dee oh verr zheuhn, sheuhn/, n. Med. restoring the rhythm of the heart to normal by applying direct current electrical shock. [1970 75; CARDIO + (RE)VERSION] * * * …   Universalium

  • cardioversion — noun The treatment of cardiac arrhythmia, either with medication or by use of a machine (a cardioverter) that delivers a controlled electric current. See Also: cardiovert …   Wiktionary

  • cardioversion — n. restoration of a normal heart rhythm by applying an electrical shock (Medicine) …   English contemporary dictionary

  • cardioversion — car·dio·ver·sion …   English syllables

  • cardioversion — car•di•o•ver•sion [[t]ˌkɑr di oʊˈvɜr ʒən, ʃən[/t]] n. med restoration of the normal heart rhythm by applying direct current electrical shock • Etymology: 1970–75; cardio + (re) version …   From formal English to slang

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