Diseases, Conditions, Syndromes

Study finds connection between COVID and new-onset AFib

A study in the American Heart Association journal Circulation: Arrhythmia and Electrophysiology finds new-onset atrial fibrillation (AFib) in 1 in 20 patients hospitalized with COVID-19. AFib is a quivering or irregular heartbeat ...

Cardiology

Researchers map rotating spiral waves in live human hearts

Electrical signals tell the heart to contract, but when the signals form spiral waves, they can lead to dangerous cardiac events like tachycardia and fibrillation. Researchers at the Georgia Institute of Technology and clinicians ...

Diseases, Conditions, Syndromes

Cardiovascular disease risk in adults with compromised bone health

These risk factors included male sex, older age, smoking, alcohol consumption, atrial fibrillation, use of anti-hypertensive medications, prior heart attack or stroke, established cardiovascular disease, low kidney function, ...

Cardiology

Sex differences and AFib: New study flips conventional wisdom

Science has long shown that men are at greater risk for developing atrial fibrillation (AFib) than women; but it has never been fully understood why women would be protected from developing the condition. New research from ...

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Fibril

Fibril is a fine fiber approximately 1 nm in diameter.[citation needed]

Cytoplasmic fibrils are observed on the protoplasmic cylinders found in most spirochetal species, although no function of the cytoplasmic fibrils has been ascribed.[citation needed]

Polysaccharides, the union of several linked monosaccharides, sometimes serve as a structural compound. Cellulose, the most abundant organic compound on Earth[citation needed], forms cable-like strings, known as fibrils in the tough walls that enclose plant cells. While cellulose is a compilation of glucose monomers, they form unbranched, long strands instead of coils like starch or glycogen. These are arranged in parallel lines which form on top of each other in an intricate layer through hydrogen bonding.[citation needed]

Insect flight muscle is said to be fibrillar, in that it contracts in response to being stretched by antagonistic muscle, so as to allow very rapid (up to 1000 Hz) contraction.[citation needed]

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