Exact Answer: Five Minutes
Foley is a term used in urology to refer to a Foley catheter, a flexible tube passed into the urethra by a clinician. From the urethra, the tube is passed into the bladder, which helps in the proper drainage of the urine. It is one of the most common types of urinary catheters used in indwelling by medical experts all around the globe.
The tube consists of two separate channels, which are scientifically named lumens. The first lumen, which is open at both ends, is required to drain urine in a collection bag. The other lumen consists of a valve located on the outside end, and a balloon is connected at the inside tip.
How Long To Clamp Foley After 1000 ML?
Frederic Foley is credited for designing the tube that helps in treating urinary conditions. He designed the original tube in 1929 and introduced an advanced version of the tube in 1930. He was a surgeon working in a lab in Boston, Massachusetts. C.R. Bard of Murray Hill, New Jersey, adopted the original design and manufactured multiple prototypes of the same and named them Foley tubes in honor of Frederic Foley. This tube is a very preferred tool for medical experts, and its results are excellent in the field of medical sciences.
There are mainly three types of Foley tubes predominantly used in the removal of urine from the body. Coude catheters, more popularly known as French for elbowed catheters, are where the bending angle is forty-five degrees. The second one is Council tip catheters that contain a small hole at one end, which can be passed through the wire. The triple lumen or three-way catheters are the third prototypes with a third channel that helps wash away blood clots during surgery.
| Quantity Of Urine Drained | Time To Clamp |
| 1000 ml | Five minutes |
| 1500 ml | Ten minutes |
It is crucial to clamp the Foley tube after draining the urine. If 1000 ml of urine is drained, the catheter should be clamped for five minutes. In contrast, if the urine drained is 1250 ml, the tube must be clamped for ten minutes. If it is not clamped at the right time, then there can be severe complications.
Why Is Foley Clamped For That Long After 1000 ML?
The unit in which the size of the Foley catheter is defined is termed as French units or the symbol F. The most common sizes are available of the Foley tube range from 10F to 28F. If one F is converted into SI units, it equals 0.033 centimeters or 0.33 millimeters. For easy identification of the exact size of a Foley tube, a solid color band is attached at one end of the tube. The shortest Foley tube is depicted by a Yellow-Green color code where the length is 6F. In contrast, the most extended Foley tube is depicted by a black-colored band whose length is 26F.
The Foley tube is clamped for that long after drainage of urine because if the amount of urine drained is very high, it can result in hypotension. An adult bladder holds approximately 400-500 ml of urine at one time, and it must be ensured that the amount of urine drained at once is not more than this. If more urine is drained, it can lead to malfunctioning of the bladder, and the patient can feel dizziness and weakness in the body.
This method is very effective and helpful, but it has specific side effects that can be harmful. If the balloon breaks during the insertion, then the broken parts must be removed immediately. If the urine flow is blocked, then the foley tube should be replaced as soon as possible. It is essential to follow the guidelines provided by the medical staff operating for achieving the best results.
Conclusion
Finally, it can be concluded that a Foley tube is a tube that helps drain out urine from the body of those patients who cannot urinate properly. This tube was designed in 1929 and is named after its designer Frederic Foley. There are three types of Foley tubes that can be used in different circumstances.
On average, the tube must be clamped for at least five minutes after 1000 ml of urine is drained. Foley tube is available in different lengths, and the length is measured in French Units F. It must be ensured that the amount of urine drained at one time is not more than 500 ml as only this much urine can be stored in the bladder at one time.
References
- https://www.sciencedirect.com/science/article/pii/S0016510794701652
- https://www.sciencedirect.com/science/article/pii/S1743919118315218
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