fibrillation

noun
fi·bril·la·tion | \ ˌfi-brə-ˈlā-shən , ˌfī- \

Definition of fibrillation 

1 : an act or process of forming fibers or fibrils

2a : a muscular twitching involving individual muscle fibers acting without coordination

b : very rapid irregular contractions of the muscle fibers of the heart resulting in a lack of synchronism between heartbeat and pulse

Examples of fibrillation in a Sentence

Recent Examples on the Web

The app was able to distinguish the difference between a normal heart rhythm and and an irregular atrial fibrillation rhythm, the study found. Catherine Ho, San Francisco Chronicle, "Smartwatch app can detect common heart rhythm abnormality, study finds," 21 Mar. 2018 For example, a recent study in BMJ Heart looked at chocolate and suggested that eating it up to three times a month might decrease your risk of developing atrial fibrillation, compared with not eating it at all. David Becker, Philly.com, "Determining the real from the fake health news," 12 June 2018 That’s especially true with intermittent conditions such as atrial fibrillation, Steinhubl said. Bradley J. Fikes, sandiegouniontribune.com, "Wearable heart monitor catches undiagnosed atrial fibrillation, JAMA study finds," 10 July 2018 When someone's heart is affected due, 60 percent have ventricular fibrillation, a fast, quivering heartbeat that can cause death. Alicia Fabbre, Elgin Courier-News, "'I felt the shock': St. Charles fire captain, Plainfield paramedic credited with saving lives of 2 lightning strike victims," 6 July 2018 Common factors that can lead to stroke, such as carotid artery disease and atrial fibrillation, did not apply in this case. Donna Vickroy, Daily Southtown, "Orland Park teacher caps off stroke recovery by finishing Wisconsin Marathon," 22 June 2018 On May 30, 2017, a resident with hypertension and atrial fibrillation was sent to the hospital after receiving an incorrect dosage of a blood pressure-lowering medication. courant.com, "Six Nursing Homes Fined Following Lapses In Care," 13 June 2018 The outcome of the trial raises questions about the procedure, known as catheter ablation, to treat patients with atrial fibrillation. Peter Loftus, WSJ, "Heart Device Procedure Is No Better Than Drug Therapy for Irregular Heartbeat: Study," 10 May 2018 The resident had atrial fibrillation and other cardiac conditions and had been medicated to treat high levels of potassium. courant.com, "State Fines Nursing Homes Following Injuries To Residents," 18 June 2018

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.

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First Known Use of fibrillation

1845, in the meaning defined at sense 1

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Last Updated

18 Aug 2018

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Time Traveler for fibrillation

The first known use of fibrillation was in 1845

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More Definitions for fibrillation

fibrillation

noun
fi·bril·la·tion | \ ˌfib-rə-ˈlā-shən , ˌfīb- \

Medical Definition of fibrillation 

1 : an act or process of forming fibers or fibrils

2a : a muscular twitching involving individual muscle fibers acting without coordination

b : 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

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