Definition of fibrillation in English English dictionary
The rapid, irregular, and unsynchronized contraction of the muscle fibers of the heart
Rapid, uncoordinated contractions of individual heart muscle fibers The heart chamber involved can't contract all at once and pumps blood ineffectively, if at all
waves with rates of 300-400 times per minute causing mere fibrillation of cardiac muscle; can occur with atria or with ventricles
A condition in which a very rapid, unsychronized, beating of different parts of the heart occur Essentially the parts quiver, rather than beat together The most serios fibrillation is "V-Fib" (Ventricular Fibrilation), where the main pumping chambers of the heart quiver, rather than pump blood The fix for this is electrical defibrillation, using a device called a defibrillator (the paddles you see on TV)
Fibrillation is a very fast and irregular succession of stimuli, leading to the disappearance of any coordinated and effective contraction of auricular cardiac fibres (auricular fibrillation) or ventricular fibres (ventricular fibrillation is equivalent to heart failure) Frequency : The number of identical and regular cycles during one second Frequency is expressed in Hertz (Hz) It is the inverse of the period which is expressed in seconds : 1 Hz = 1/s
the longitudinal splitting of a fibre or filament to give either micro-fine surface hairs or a complete breakdown into sub-micron fibres In fabrics for apparel, fibrillation can be used to create a variety of surface textures and attractive aesthetics In hydroentangled nonwoven fabrics, the fibrils make entanglement easier and can give added strength to the fabric
rapid uncoordinated contractions of the heart muscle occurring when the individual muscle fibres take up independent irregular contractions
Rapid, uncoordinated contractions of individual heart muscle fibres The heart chamber involved can't contract all at once and pumps blood ineffectively, if at all See Atrial Fibrillation and Ventricular Fibrillation
-Abnormal uncontrolled rapid contraction of the fibers in the heart When the process involves the two upper chambers of the heart (the atria), the condition is called "atrial fibrillation " When it involves the lower, ventricular chambers, the condition is called "ventricular fibrillation "
A nonsynchronous contraction of muscle tissue, with individual cells firing at their own rate Fibrillation can be isolated to the atria or the ventricles Ventricle fibrillation is not compatible with life A heart in fibrillation has been described as looking and feeling like a "bag of worms" Press the "back" button to return to where you came from
(Tıp, İlaç) 1. Atrial fibrillation (AF or A-fib) is the most common cardiac arrhythmia (abnormal heart rhythm) and involves the two upper chambers (atria) of the heart. Its name comes from the fibrillating (i.e., quivering) of the heart muscles of the atria, instead of a coordinated contraction.2. Very rapid uncoordinated contractions of the atria of the heart resulting in a lack of synchronism between heartbeat and pulse beat —called also auricular fibrillation
Irregular rhythm (arrhythmia) of contraction of the atria (upper heart chambers). The most common major arrhythmia, it may result as a consequence of increased fibrous tissue in the aging heart, of heart disease, or in association with severe infection. If it continues, it can permit formation of blood clots, which can block blood flow to essential organs. Emergency treatment consists of drugs such as beta-blockers or digitalis, which slow the heart's action, and anticoagulants. In addition, atrial fibrillation can be interrupted by administering electric shocks (defibrillation). See also ventricular fibrillation
An often fatal form of arrhythmia characterized by rapid, irregular fibrillar twitching of the ventricles of the heart in place of normal contractions, resulting in a loss of pulse. Uncoordinated contraction of the muscle fibres of the heart's ventricles (see arrhythmia). Causes include heart attack, electric shock, anoxia, abnormally high potassium or low calcium in the blood, and digitalis or epinephrine poisoning (see drug poisoning). Death soon follows if circulation is not restored with electric shocks (defibrillation) or drugs supplemented by chest compressions (as in cardiopulmonary resuscitation). See also atrial fibrillation