What does the term "stenosis" refer to in vascular assessments?

The term "stenosis" specifically refers to the narrowing of a blood vessel. In the context of vascular assessments, stenosis can result from various underlying conditions, such as atherosclerosis, where plaque builds up on the arterial walls, or other processes that lead to reduced luminal diameter. This narrowing can significantly impact blood flow, often leading to symptoms such as pain or ischemia in the affected area, as the reduced cross-sectional area may not adequately accommodate the volume of blood needed for proper tissue perfusion.

Understanding stenosis is crucial for diagnosing and evaluating vascular conditions. When vascular technologists conduct assessments using ultrasound or other imaging modalities, they look for changes in blood flow patterns and vessel morphology that indicate stenosis, aiding in the management and treatment planning for patients with peripheral artery disease, carotid artery disease, and other vascular disorders.