Venous Stenosis - Video Lesson

Hey, everybody. Welcome to today's lesson on hemodynamics. This lesson focuses on venous stenosis, which is the narrowing of a blood vessel. Understanding the different causes of venous stenosis is vital for patient outcomes. Stenosis refers to the narrowing of a blood vessel, which can occur in both arterial and venous systems. While venous stenosis and arterial stenosis share similarities in that they both restrict blood flow, their physiological consequences and clinical implications differ due to the distinct functions of arteries and veins. Remember, arterial stenosis occurs when an artery is narrowed, typically due to a buildup of plaque called atherosclerosis or due to an external compression. Key characteristics of arterial stenosis include increased velocity through the stenosis site, turbulent blood flow distal to the stenosis, and a drop in pressure beyond the stenosis. If arterial stenosis is severe, tissues downstream may receive insufficient oxygen leading to ischemic damage.