Definition of fibrillation
1 : an act or process of forming fibers or fibrils
2a : a muscular twitching involving individual muscle fibers acting without coordinationb : very rapid irregular contractions of the muscle fibers of the heart resulting in a lack of synchronism between heartbeat and pulse
Recent Examples of fibrillation from the Web
Researchers followed over 85,000 working men and women who had no recorded atrial fibrillation.
The investigators found that people who worked 55 or more hours a week were about 40 percent more likely to develop atrial fibrillation over 10 years than those who worked between 35 to 40 hours per week.
Those who ate two to six servings per week had a 20% lower chance of the irregular heartbeats, or atrial fibrillation, one of the major contributors to clots, stroke, and heart failure.
For patients living with nonvalvular atrial fibrillation (AFib), life can be uncertain, stressful, and confusing.
Sharyn Orr, a Tulane University academic adviser, began taking Xarelto in February 2014 for treatment of atrial fibrillation.
Atrial fibrillation is a condition in which the heart’s two upper chambers, known as the atriums, do not beat at the same pace as the heart’s two lower chambers, resulting in an irregular heartbeat.
In the study, published in the journal Heart, researchers found that people who ate chocolate at least once a month had rates of atrial fibrillation that were 10 to 20 percent lower than those who ate chocolate less often.
Those who ate one serving, which is about 1 ounce of chocolate per week, were 17 percent less likely to be diagnosed with atrial fibrillation by the end of the study than those who reported eating chocolate less than once a month.
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'fibrillation.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
First Known Use of fibrillation
Medical Definition of fibrillation
1: an act or process of forming fibers or fibrils
2a: a muscular twitching involving individual muscle fibers acting without coordinationb: very rapid irregular contractions of the muscle fibers of the heart resulting in a lack of synchronism between heartbeat and pulse—see atrial fibrillation, ventricular fibrillation
Seen and Heard
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