Catheter

In medicine, a catheter is a tube that a health professional may insert into part of the body. The process of inserting a catheter is catheterization. In most uses it is a thin, flexible tube: a "soft" catheter; in some, it is a larger, solid tube: a "hard" catheter. It was first invented by Benjamin Franklin.

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Placement of a catheter into a particular part of the body may allow:

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• draining urine from the urinary bladder as in urinary catheterization, i.e. Foley Catheter or even when the urethra is damaged as in super-pubic catheterization.
• administration of intravenous fluids, medication or parenteral nutrition
• angioplasty
• injection of dye or radio-opaque contrast into blood vessels or other structures to visualize abnormalities, as in cardiac catheterization, which is part of coronary angiography
• direct measurement of blood pressure in a artery or vein
• infusion of local anesthetics and other drugs for epidural anesthesia
• suctioning of unwanted fluids from the airway (with a hard catheter)
• Administration of a lethal injection

A central line is a conduit for giving drugs or fluids into a large-bore catheter positioned either in a vein near the heart or just inside the atrium.

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Catheter: See Also ►



 

Medicine: Medicine is a branch of health science concerned with maintaining human health and restoring it by treating disease and injury; it is both an area of knowledge, a science of body systems and diseases and their treatment, and the applied practice of that knowledge....

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