A nonspecific word for an ectopic beat from any source in the heart. SYN: premature beat, premature systole.
- atrial e. premature complex of the heart arising from an ectopic atrial focus. SYN: auricular e..
- atrioventricular e. SYN: junctional e..
- auricular e. SYN: atrial e..
- interpolated e. a ventricular or atrial e. which, instead of being followed by a compensatory or noncompensatory pause, is sandwiched between two consecutive sinus cycles.
- junctional e. a premature beat arising from the AV junction and leading to a simultaneous or almost simultaneous contraction of atria and ventricles. SYN: atrioventricular e..
- return e. a form of reciprocal rhythm in which the impulse having arisen in the ventricle ascends toward the atria, but before reaching the atria is reflected back to the ventricles to produce a second ventricular contraction.
- supraventricular e. an e. arising from a center above the ventricle, i.e., arising from the atrium or AV junction.

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ex·tra·sys·to·le -'sis-tə-(.)lē n a prematurely occurring beat of one of the chambers of the heart that leads to momentary arrhythmia but leaves the fundamental rhythm unchanged called also premature beat
ex·tra·sys·tol·ic -sis-'täl-ik adj

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ex·tra·sys·to·le (eks″trə-sisґto-le) a premature contraction of the heart that is independent of the normal rhythm and arises in response to an impulse in some part of the heart other than the sinoatrial node; called also premature beat or systole.

Medical dictionary. 2011.

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  • EXTRASYSTOLE — Contraction cardiaque, isolée ou en salves, survenant en dehors du rythme sinusal normal. Une extrasystole peut être découverte à l’auscultation et à la prise du pouls, mais l’analyse des extrasystoles par l’électrocardiogramme est toujours… …   Encyclopédie Universelle

  • extrasystole — [eks΄trəsis′tə lē΄] n. [ EXTRA + SYSTOLE] a disturbance of heart rhythm resulting in an extra contraction of the heart between regular beats extrasystolic [eks΄trəsis täl′ik] adj …   English World dictionary

  • Extrasystole — Autres arythmies cardiaques Classification et ressources externes Une extrasystole est un trouble du rythme cardiaque correspondant à une contraction prématurée d’une des cavités du cœur. Une prématurité en est un synonyme. Une extrasystolie est… …   Wikipédia en Français

  • Extrasystole — Klassifikation nach ICD 10 I49.1 Vorhofextrasystolie I49.2 AV junktionale Extrasystolie I49.3 …   Deutsch Wikipedia

  • extrasystole — noun A premature contraction of the heart, producing an interruption or irregularity in heartbeat rhythm, associated with heart disease or the use of some pharmaceuticals. An extrasystole originating at the rhythmic centre is thus followed by a… …   Wiktionary

  • extrasystole — noun Etymology: New Latin Date: circa 1900 a premature beat of one of the chambers of the heart that leads to momentary arrhythmia …   New Collegiate Dictionary

  • extrasystole — extrasystolic /ek streuh sis tol ik/, adj. /ek streuh sis teuh lee/, n. Pathol. a premature contraction of the heart, resulting in momentary interruption of the normal heartbeat. Also called premature beat, premature contraction. [1895 1900; …   Universalium

  • Extrasystole — vorzeitige Kontraktion des Herzmuskels * * * Ẹx|t|ra|sy|s|to|le , die; , n […zʏsˌto:lən] [aus lat. extra (Adv.; ↑ 1extra) u. ↑ Systole] (Med.): auf einen ungewöhnlichen Reiz hin erfolgende vorzeitige Zusammenziehung des Herzens innerhalb der… …   Universal-Lexikon

  • Extrasystole — ◆ Ex|tra|sys|to|le 〈f.; Gen.: , Pl.: n; Med.〉 außerhalb des normalen Herzschlagrhythmus erfolgende, vorzeitige od. verspätete Herzschläge [Etym.: <Extra… + Systole]   ◆ Die Buchstabenfolge ex|tr… kann auch ext|r… getrennt werden. Davon… …   Lexikalische Deutsches Wörterbuch

  • Extrasystole — Ẹx|tra|sy|stole [auch: ...to̱le od. ...sụ̈ßtole; ↑extra... u. ↑Systole] w; , ...len: auf einen ungewöhnlichen Reiz hin erfolgende vorzeitige ↑Kontraktion des Herzens innerhalb der normalen (gewöhnlichen) Herzschlagfolge …   Das Wörterbuch medizinischer Fachausdrücke

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