AV NICKING Meaning and
Definition
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Av nicking refers to a condition characterized by a visible change in the appearance of retinal arterioles due to compression or indentation caused by adjacent retinal veins. It is a pathologic finding observed during a clinical examination of the retina.
The term "av nicking" is derived from the words "arteriovenous" and "nick." Arteriovenous refers to the interaction between an artery and a vein, while nicking describes a small cut or indentation. In the context of the retina, av nicking refers to the narrowing or constriction of a retinal artery where it crosses over a retinal vein. This narrowing creates an indentation or nick-like appearance in the arteriole as it passes through the vein.
Av nicking occurs when excessive pressure in the retinal vein compresses the adjacent retinal artery. This can be caused by various factors, such as hypertension, arteriosclerosis, or retinal vein occlusion. The compression of the arteriole disrupts its normal blood flow, leading to alterations in the shape and contour of the vessel.
Av nicking is an important clinical finding in ophthalmology as it can indicate underlying vascular abnormalities. It is commonly associated with hypertensive retinopathy, a condition caused by chronic high blood pressure. Av nicking is also observed in certain retinal conditions, such as diabetic retinopathy and retinal vein occlusion.
The presence of av nicking is typically assessed through a comprehensive eye examination, including funduscopy or retinal photography. It serves as a clinical indicator for the need of further investigation and management of underlying systemic or ocular conditions.
Common Misspellings for AV NICKING
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Etymology of AV NICKING
The term "av nicking" is derived from the field of medicine, specifically ophthalmology. "AV" stands for arteriovenous, referring to the relation between arteries and veins, and "nicking" refers to a constrictive narrowing or compression. Therefore, "av nicking" describes the phenomenon where retinal arteries compress retinal veins at specific points along their course. This condition can be observed during the examination of the eye's fundus and is often associated with hypertension.
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