Catheter
A catheter is a thin, flexible tube that is used in healthcare to deliver or remove fluids from the body, or access certain areas of the body for diagnostic or therapeutic purposes. It is a crucial medical tool used across many specialties, including urology, cardiology, anesthesiology, and radiology.
Types of Catheters[edit]
Catheters come in various types, each designed for specific uses:
- Foley catheter: Used to drain urine from the bladder.
- Central venous catheter: Used for administering medication or fluids, obtaining blood tests (specifically the "central venous oxygen saturation"), and measuring central venous pressure.
- Swan-Ganz catheter: Used to measure the heart's ability to pump blood and to monitor the status of patients with complicated heart or lung conditions.
- Intravenous catheter: Used to deliver fluids and medications directly into the bloodstream.
- Nasogastric tube: A type of catheter passed through the nose and down into the stomach to deliver nutrition or medication, or to remove contents from the stomach.
Uses of Catheters[edit]
Catheters play a key role in a wide range of medical treatments and procedures:
- Urine collection: Catheters are frequently used to collect urine in patients who are unable to control their bladder function or are immobile.
- Drug delivery: Certain medications are delivered directly into the bloodstream or a body cavity through a catheter, improving the speed and efficacy of the drug.
- Surgery: During surgical procedures, catheters can be used to drain fluids or keep body passages open.
- Dialysis: For patients with kidney failure, a catheter can be used to remove waste products from the blood.
Risks and Complications[edit]
While catheter use is generally safe, it is associated with certain risks. The most common complication is catheter-associated urinary tract infections (CAUTI). Other potential complications include blood clots, air embolisms, allergic reactions to the catheter material, and trauma to urethra or bladder during insertion or removal.[1]
Catheter Care and Maintenance[edit]
Proper care and maintenance of catheters are critical to prevent complications, including regular cleaning, correct positioning, and regular assessment for potential issues. Infection control measures are particularly important in long-term catheter use.
See Also[edit]
- Urinary catheterization
- Central venous catheterization
- Catheter-associated urinary tract infection
- Medical device
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References[edit]
- ↑ Saint, S."Clinical and economic consequences of nosocomial catheter-related bacteriuria".American Journal of Infection Control.2000;28(1)
- 68–75.doi:10.1016/S0196-6553(00)90015-4.
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