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Catheter urine is more "sanitary" than regular urine. Because it is collected from the bladder, and doesn't "touch" the external skin, it is less prone to skin contamination.
bladder
Catheter
Urinary catheterization is the insertion of a catheter into a patient's bladder. The catheter is used as a conduit to drain urine from the bladder into an attached bag or container.
Extracellular.
Urine drainage
no
Sounds like severe dehydration.
Urine is the catheter tube is "fresher" than urine sitting in the collection bag, often sitting for many hours.
A urinary catheter, usually just called a Catheter. It may be made from rubber, latex or silicone.
If the Urine is in the bladder and does not flow, you put a catheter through the urethra.
A urinary catheter works by inserting the lubricated tip of the catheter into the urethra. Once urine begins to be drained by the tube, you inflate the catheter balloon with 10 ml of saline.