What is a venous cannula?

venous cannula is a small thin catheter tube inserted into a vein that administers fluids and medicines through intravenous (IV) line. The venous cannula can also be used to collect blood for laboratory testing. The location of the cannula can be painful; Injection of anesthetics or application of anesthetic cream can help alleviate the discomfort of advertising procedure. Blue or bleeding from the place of insertion are frequent side effects of the use of venous cannulas, as well as infection, air embolism and flebitis. The cannula pipes should be replaced for no longer than four days, and the frequency of the replacement plan can be changed on the basis of a converted liquid substance into a patient. Solutions containing fat molecules usually require the removal and replacement of the cannula maximum 24 hours after the use of lipid fluid.

Before inserting a venous cannula, a few steps should be followed to ensure the patient's continued health. The skin at the insertion site must be cleaned with an antiseptic or antibacterial solution such as isopropylala cohol or povidon-p. Turnstile can be used to increase the visibility of the vein used for the venous cannula; This reduces the likelihood of repeated needle sticks for the correct insertion of the cannula. If the patient has vasoconstriction or narrowed veins, warm substances may be applied to the proposed cannulation site to expand the vein diameter, reducing the likelihood of several cannulation attempts.

The

venous cannula is inserted over the hollow needle. Once the correct placement of the needle is confirmed, the needle is removed from the body and the cannula remains inside the vein. The cannula tube is usually a loop and securely glued to the leather tape of the medical class.

Complications that may arise from venous cannulation changes. Thrombus or blocking from a blood clot can prevent hollow areas inside the cannula. If the lumen or the opening of the venous cannula is blocked, it can be rinsed with a physiological solution or replaced by a new cannula to avoid any adverse effects of thrombus.

Another completeThe formation of air embolism is the formation of air embolism. If it was not treated, the air bubble could enter the heart and block the blood flow. It is possible that bacteria can enter the body of the cannula and cause serious infection; Regular maintenance of the venous catheter can help reduce the risk of infection. In addition, the vein can be irritated and ignited after inserting the cannula, causing a condition called phlebitis.