![]() ![]() The most used tip for routine catheterization is the Nelaton tip which is round with two drainage eyes. Urinary catheters are available with different tip designs. 30cc (ml) or even more is only needed for special interventions when more pressure needs to be applied to stop bleeding, for example after prostate resection. Inflate the balloon with liquid according to the manufacturer’s recommendations.ġ0cc (ml) is the most common balloon size, suitable for most patients. An undersized balloon on the other hand, might fall down into the urethra. An oversized balloon puts unnecessary pressure on the sensitive bladder bottom. Overinflation may also result in increased residual urine volume as the balloon sits higher in the bladder. Over- or underinflation can lead to catheter complications such as bladder spasms. Use the smallest possible balloon to keep the catheter in place in the bladder. The balloon should be inflated with the amount that is indicated on the catheter connection, behind the size of the catheter. ![]() When the catheter has been inserted all the way into the bladder the balloon is inflated to keep the catheter in place. Urinary catheters mostly use color coding for different sizes, such as: SizeĬloudy urine, blood in the urine without clots The most common sizes used with adults are 12 Fr and 14 Fr, sometimes 16 Fr. If the diameter on the other hand is too small, it will take too long for the urine to exit which increases the risk for catheter blockage.Ī general rule of thumb is to use the smallest possible catheter that will do the job. A catheter with a large diameter can expose the mucosa of the urethra to too much pressure, resulting in tissue damage. The outer diameter of the catheter is measured in Charrière (Ch) also known as French Gauge (Fr). This may only have a short term effect and could potentially harm the patient’s tissue. There are also coatings where the mechanism is to release antimicrobials such as silver ions, chlorhexidine or antibiotics that kill microbes. Less bacteria adhere to the Bactiguard coated surface, which decreases the risk for biofilm formation leading to infection. Read more about catheter-related urinary tract infection > Catheter with Bactiguard coating If they begin to disperse, there is an increased risk of infection. When enough bacteria have colonized the surface, they form a biofilm. Read more about the Bactiguard technology > Catheter without infection protection The microcurrents that occur reduce microbial adhesion, which decreases the risk of biofilm formation leading to urinary tract infection. When in contact with fluid (urine), the noble metals create a galvanic effect. Infection prevention – Bactiguard infection protection technologyīactiguard’s infection prevention technology, BIP, is based on a very thin noble metal alloy coating, consisting of gold, silver and palladium, firmly attached to the urinary catheter. The hydrophilic coating also protects the tissue against latex. Better comfort – Hydrophilic coatingĬatheters with hydrophilic coating are highly biocompatible and have lower friction which provides better comfort for the patient. Latex catheters can be coated with a thin layer of silicone or teflon, to protect the patient’s tissue against latex. Protect against latex – Silicone elastomer and PTFE They might serve different purposes: to either protect the patient against the core latex material, to ease handling and provide more comfort, or to protect against infections. There are different coatings on the core catheter material available on the market today. Silicone catheters are cuffed with sterile water for use up to 2 weeks for longer term usage, glycerine solution should be used to avoid fluid diffusion. Patients with a known latex allergy should not be treated with a latex catheter. Silicone is tissue friendly, hypoallergenic, and causes less irritation than latex. Latex catheters are cuffed with sterile water. It should always be coated with a protective layer as latex otherwise can cause tissue irritation. Latex is a very soft and flexible material, providing comfort for the patient. Silicone is a firmer material than latex, and allows for a larger inner lumen while keeping the outer diameter the same size. Each have pros and cons and it is important to choose the right material for each individual patient. Today latex and silicone are the most commonly used materials. Indwelling catheters are available in several different materials. The function of the core material is to create a hose with a cavity that can drain the urine. ![]()
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