fibrillation

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fib·ril·la·tion

 (fĭb′rə-lā′shən, fī′brə-)
n.
1. The forming of fibers.
2.
a. Fine, rapid twitching of individual muscle fibers with little or no movement of the muscle as a whole.
b. Rapid uncoordinated twitching movements that replace the normal rhythmic contraction of the heart and may cause a lack of circulation and pulse.

fibrillation

(ˌfaɪbrɪˈleɪʃən; ˌfɪb-)
n
1. (Physiology) a local and uncontrollable twitching of muscle fibres, esp of the heart, not affecting the entire muscle. Atrial fibrillation results in rapid and irregular heart and pulse rate. In ventricular fibrillation, the heart stops beating
2. (Pathology) irregular twitchings of the muscular wall of the heart, often interfering with the normal rhythmic contractions

fi•bril•la•tion

(ˌfaɪ brəˈleɪ ʃən, or, esp. for 2, ˌfɪb rə-)

n.
1.
a. uncontrolled twitching or quivering of muscular fibrils.
b. chaotic contractions across the atrium of the heart, causing fast and irregular ventricular activity; arrhythmia.
2. the formation of fibrils.
[1830–40]

fib·ril·la·tion

(fĭb′rə-lā′shən)
A rapid twitching of muscle fibers, as of the heart, caused by the abnormal discharge of electrical nerve impulses.

fibrillation

the uncontrolled twitching of the muscular fibrils, especially of the cardiac muscles.
See also: Heart

fibrillation

Rapid, irregular contractions of the heart.
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.fibrillation - muscular twitching involving individual muscle fibers acting without coordination
twitch, twitching, vellication - a sudden muscle spasm; especially one caused by a nervous condition
atrial fibrillation - fibrillation of the muscles of the atria of the heart
ventricular fibrillation - fibrillation of heart muscles resulting in interference with rhythmic contractions of the ventricles and possibly leading to cardiac arrest
2.fibrillation - act or process of forming fibrils
branching, ramification, fork, forking - the act of branching out or dividing into branches
Translations

fibrillation

[ˌfaɪbrɪˈleɪʃn] nfibrillazione f

fi·bril·la·tion

n. fibrilación.
1. contracción muscular involuntaria que afecta fibras musculares individuales;
2. formación de fibrillas;
atrial ______ auricular;
flutter ______ de aleteo;
ventricular ______ ventricular.

fibrillation

n fibrilación f; atrial — fibrilación auricular; ventricular — fibrilación ventricular
References in periodicals archive ?
This is the basis of Ashman's phenomenon which is manifested in the 4th QRS from the end of the tracing where a QRS with right bundle branch block follows a short R-R interval that follows a long R-R interval.
In what has come to be known as Ashman's phenomenon, because the refractory period after any QRS complex is proportional to the length of the preceding R-R interval, a premature impulse is most likely to find part of the conduction system refractory if its short R-R interval has been preceded by a long R-R interval.