This document provides information and instructions about intravenous (IV) cannulation. It begins with definitions of IV cannulation and the parts of an IV cannula. It then discusses types of cannulas, sizes, indications for IV use, advantages, necessary equipment, vein selection, signs of good veins to use, complications to avoid, the procedure steps, potential complications, prevention methods, assessment tools, and includes a bibliography. The overall document serves as a guide for healthcare professionals on properly performing IV cannulation.