Hemodynamic Disorders Derangements in either blood supply or fluid balance: Hyperemia & Congestion: Increased blood in an area compared to normal Definition: Hyperemia (arterial hyperemia) is an active process resulting from augmented inflow due to arteriolar dilation (e.g. acute inflammation) Congestion (venous hyperemia) is a passive process resulting from impaired outflow from a tissue (e.g. cardiac failure or venous obstruction) https://www.hanxinclinic.com/index.php/2019/10/23/hemodynamic-disorders/