Intravenous (IV) cannulation is a technique in which a cannula is placed inside a vein to provide venous access. Venous access allows sampling of blood, as well as administration of fluids, medications, parenteral nutrition, chemotherapy, and blood products.
Veins have a three-layered wall composed of an internal endothelium surrounded by a thin layer of muscle fibers that is surrounded by a layer of connective tissue. Venous valves encourage unidirectional flow of blood and prevent pooling of blood in the dependent portions of the extremities; they also can impede the passage of a catheter through and into a vein. Venous valves are more numerous just distal to the points were tributaries join larger veins and in the lower extremities.
|Introduction to Intravenous Access|
|What is Intravenous Access?||00:10:00|
|This course describes placement of an over-the-needle IV catheter, in which the catheter is mounted on the needle.|
|Indications and Contraindications|
|Intravenous access considerations||00:10:00|
|Indications for IV cannulation include...|
|Intravenous access procedure||00:20:00|
|Choosing the correct vein is important.|
|Intravenous access complications||00:10:00|
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|Intravenous access assessment||01:00:00|
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