NURS2080 Study Guide - Final Guide: Stridor, Aortic Stenosis, Hypermetabolism
Document Summary
Laminar: smooth blood flow, they way it should be (rbcs should barely touch vessel wall) Can initiate platelet responses clotting cascade initiated. Preload: volume of blood in ventricles at end of diastole (end diastolic pressure); right side of heart stretch on heart (left v. right); filling pressure. Afterload: resistance lv must overcome to circulate blood. Peripheral vascular resistance: sum of the resistance of all peripheral vasculature in systemic circulation. We need lipids because they produce many hormones and are main part of cell membrane. Lipoproteins: we need them because cholesterol and triglycerides cannot travel through body themselves. Takes up excess cholesterol and brings to liver; reverse cholesterol transport; once in liver it is eliminated in bile or made into steroids. Role in endothelial injury, inflammation & immune responses. Low levels of hdl strong indicator of coronary risk. Bad: combination of all (sum of ldl, hdl, and vldl)
