Examples of fibrillation in the following topics:
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- Arrhythmias - fibrillation: When an entire chamber of the heart is involved in a multiple micro-reentry circuits and, therefore, quivering with chaotic electrical impulses, it is said to be in fibrillation.
- Fibrillation can affect the atrium (atrial fibrillation) or the ventricle (ventricular fibrillation); ventricular fibrillation is imminently life-threatening.
- Atrial fibrillation affects the upper chambers of the heart, known as the atria.
- If left untreated, ventricular fibrillation (VF, or V-fib) can lead to death within minutes.
- It is typically not a stable rhythm, and frequently degenerates into atrial fibrillation (AF).
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- Collagen, in the form of elongated fibrils, is mostly found in fibrous tissues such as tendons, ligaments, and skin and is also abundant in cornea, cartilage, bone, blood vessels, the gut, and intervertebral discs.
- The tropocollagen or collagen molecule is a subunit of larger collagen aggregates such as fibrils.
- Collagen fibrils/aggregates are arranged in different combinations and concentrations in various tissues to provide varying tissue properties.
- The tropocollagen or collagen molecule is a subunit of larger collagen aggregates such as fibrils.
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- A missing P wave indicates atrial fibrillation, a cardiac arrhythmia in which the heart beats irregularly, preventing efficient ventricular diastole.
- When ECG output shows no identifiable P waves, QRS complexes, or T waves, it imdicates ventricular fibrillation, a severe arrhythmia.
- During ventricular fibrillation, the heart beats extremely fast and irregularly and can no longer pump blood, acting as a mass of quivering, disorganized muscle movements.
- Ventricular fibrillation will cause sudden cardiac death within minutes unless electrical resuscitation (with an AED) is performed immediately.
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- Together with the anchoring fibrils and anchoring filaments, these are collectively termed the HD-stable adhesion complex or HD-anchoring filament complex.
- Beneath the lamina densa, loop-structured, cross-banded anchoring fibrils extend more than 300 nm beneath the basement membrane within the papillary dermis.
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- The lamina reticularis is attached to the basal lamina with anchoring fibrils (type VII collagen fibers ) and microfibrils (fibrillin).
- The electron-dense lamina densa membrane is about 30–70 nanometers in thickness, and consists of an underlying network of reticular collagen (type IV) fibrils (fibroblast precursors) which average 30 nanometers in diameter and 0.1–2 micrometers in thickness.
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- Risk factors for stroke include old age, hypertension (high blood pressure), previous stroke or transient ischemic attack (TIA), diabetes, high cholesterol, cigarette smoking, and atrial fibrillation.
- The most important modifiable risk factors for stroke are high blood pressure and atrial fibrillation (although magnitude of this effect is small).
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- This usually arises from a dislodged atherosclerotic plaque in one of the carotid arteries or from a thrombus (i.e. a blood clot) in the heart because of atrial fibrillation .
- TIA is related to other medical conditions such as hypertension, heart disease (especially atrial fibrillation), migraine, cigarette smoking, hypercholesterolemia, and diabetes mellitus.
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- These anticoagulants are used to treat patients with deep-vein thrombosis (DVT), pulmonary embolism (PE), atrial fibrillation (AF), and mechanical prosthetic heart valves.
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- From these plexuses fibrils are distributed to the muscular tissue and the mucous membrane.
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- Defibrillation is only effective for certain heart rhythms, namely ventricular fibrillation or pulseless ventricular tachycardia, rather than asystole or pulseless electrical activity.