Note , there is a lot of strapping of tape around the leg. Any swelling around the catheter site will tighten the support strapping around the leg causing circulatory impairment. Regular monitoring around intra venous catheter site should always be done.
After seeing many videos , this video answered to my confusion on iv catheter. it is new to me and i thought a metal needle is inserted and kept there it self. but that is not the case. it is the metal needle that is used to prick into the veins and then , the "plastic catheter (looks like a needle ) is pushed into the vein. then the metal needle is taken out. it is so simple but i was thoroughly confused earlier.. because they show a metal needle in a plastic catheter and both of them are embedded and i did not know that it is the metal needle that is pulled out and the plastic needle-tube ( catheter ) pushed inside the vein. they continue showing the duo and tell that is catheter when i see there is a needle in it as well.