This chapter explores the effects of right side heart failure on blood circulation, specifically discussing how it leads to increased hydrostatic pressure affecting capillary beds and causing non-pitting edema. Various factors contributing to pitting edema in the legs, such as heart failure, hypervolemia, DVT, venous obstruction, and venous insufficiency, are explained, along with the impact of changes in oncotic pressure due to conditions like liver failure or glomerulonephritis.