Catheters are thin flexible tubes inserted into a body cavity, duct or vessel to allow drainage, provide nutrients and/or medication, enable dialysis, and obtain frequent blood samples. Catheters left inside the body, either temporarily or permanently, often require clearance procedures to unclog them.  Strict protocols must be followed to help eliminate the risk of introducing microorganisms into the catheter lumen and hub, which can spread to the body and cause infection.




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