清洁间歇性导尿 (CIC)：患者分步指南

最后更新： 7 月 10, 2026

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If your doctor has recommended clean intermittent catheterization — often shortened to CIC — it’s completely natural to feel nervous at first. The idea of passing a thin tube to empty your own bladder can sound daunting. But here’s the reassuring truth I share with every patient: it’s a safe, straightforward skill that most people learn surprisingly quickly, and it gives you back control and independence. This guide walks you through what it is, why it’s recommended, and exactly how to do it, step by step.

What Is Clean Intermittent Catheterization?

Clean intermittent catheterization is simply a way to empty your bladder by gently inserting a thin, flexible tube (a catheter) through the urethra — the opening where urine normally comes out — into the bladder. You do this a few times a day, usually around four to six times, on a schedule similar to normal urination. Once the bladder is empty, the catheter is removed. That’s it: no permanent tube, no bag strapped to your leg — just a quick, routine emptying whenever it’s time.

Why Is CIC Recommended?

CIC offers several genuine advantages. It protects your kidneys by keeping the bladder from becoming dangerously overfull, and it lowers the risk of urinary tract infections compared with having a permanent (indwelling) catheter left in place. Perhaps most importantly, it gives you independence — you can manage your own bladder emptying at home, at work, or while traveling — and it mimics natural bladder function, letting the bladder fill and empty on a regular cycle just like normal urination.

Why “Clean” Instead of “Sterile”?

A common question is why your healthcare team recommends a “clean” technique rather than a fully “sterile” one. The answer is reassuring on several fronts. Research has shown no proven difference in infection rates between the two, so clean technique doesn’t put you at higher risk. It’s also far simpler and faster — no sterile gloves, drapes, or antiseptic solutions, just thorough handwashing and a clean catheter — which makes it realistic to do several times a day. Because it needs fewer supplies, you can do it almost anywhere: a bathroom at home, at work, in a restaurant, or while traveling. It’s also more affordable, and — crucially — because it’s simpler, people are far more likely to stick with their schedule, which is the single most important factor in preventing complications.

What You Will Need

• A clean, single-use catheter (your provider will prescribe the correct size and type)
• Water-soluble lubricant (unless your catheter is pre-lubricated or hydrophilic-coated)
• Soap and water for handwashing
• A clean container or toilet to drain urine into
• Optional: a small mirror (helpful for women while learning) and moist wipes or a washcloth for cleansing

Step-by-Step Instructions

Before You Begin

1. Gather your supplies — have your catheter, lubricant, and a container or toilet ready.
2. Wash your hands thoroughly with soap and water for at least 20 seconds. If soap and water aren’t available, use an alcohol-based hand sanitizer.
3. Get into a comfortable position — sit on the toilet, stand with one foot raised on a stool, or lie down, whichever works best for you.

Preparing the Area

Gently clean the genital area with soap and water or a moist wipe. For women: spread the labia (the folds of skin) with your non-dominant hand and clean from front to back to avoid bringing bacteria toward the urethra — a mirror can help you locate the opening. For men: if uncircumcised, gently retract the foreskin, then clean the tip of the penis with a front-to-back motion.

Inserting the Catheter

1. Open the catheter package carefully, touching only the funnel end you’ll hold — not the insertion tip.
2. Apply lubricant generously to the insertion tip (skip this if your catheter is pre-lubricated or hydrophilic-coated — just activate it with water as directed on the package).
3. Gently insert the catheter into the urethral opening. For women: insert slowly, about 2–3 inches (5–7 cm), until urine begins to flow. For men: hold the penis at roughly a 60–90 degree angle from the body and insert slowly, about 6–8 inches (15–20 cm), until urine flows. If you feel resistance, take a slow deep breath, relax, and use gentle steady pressure — never force the catheter.

Draining the Bladder

Let the urine drain completely into the toilet or container — you can gently press on your lower abdomen to help empty the bladder fully. Once the flow stops, slowly withdraw the catheter, pausing if more urine begins to flow and waiting until it stops again before continuing to remove it.

After You Finish

Remove the catheter completely and dispose of single-use catheters in the trash — never flush them down the toilet. Wash your hands again with soap and water, and note the amount of urine drained if your provider has asked you to keep a record.

Tips for Success

• Stick to your schedule. Catheterize at regular intervals (usually every 4–6 hours) as recommended — don’t let your bladder overfill.
• Drink fluids normally unless told otherwise — staying hydrated keeps your urinary tract healthy.
• Don’t panic at a little blood the first few times. Mild irritation is common when starting out and usually settles quickly — but contact your provider if bleeding persists.
• Store supplies in a clean, dry place, and carry a catheterization kit when you go out so you can stay on schedule.

When to Call Your Doctor

Reach out to your healthcare provider if you experience any of the following: fever, chills, or feeling unwell; cloudy, foul-smelling, or bloody urine that doesn’t improve; pain or burning that worsens with catheterization; difficulty inserting the catheter or an inability to drain urine; or persistent leaking of urine between catheterizations. These can be signs of an infection or another issue that’s worth checking promptly.

Most importantly, remember that learning CIC is a process — it gets easier and more routine with practice, and the independence it offers is well worth the initial learning curve. If you have questions or want hands-on guidance, Dr. Soarawee Weerasopone offers specialist consultations at Bangkok Hospital Headquarters. 预约咨询. (If your catheterization was recommended because your bladder isn’t emptying fully, you may also find my article on residual urine and why the bladder doesn’t empty helpful.)

Reference: Prieto JA, Murphy CL, Stewart F, Fader M. Intermittent catheter techniques, strategies and designs for managing long-term bladder conditions. Cochrane Database of Systematic Reviews. 2021;10:CD006008.

常见问题解答

What is clean intermittent catheterization (CIC)?

Clean intermittent catheterization is a method of emptying the bladder by gently inserting a thin, flexible tube (catheter) through the urethra into the bladder several times a day, then removing it once the bladder is empty. It is used when the bladder cannot empty fully on its own, and it mimics the natural fill-and-empty cycle of normal urination without needing a permanent catheter.

Why use a “clean” technique instead of a “sterile” one?

Research has shown no difference in infection rates between clean and sterile technique, so clean technique is just as safe. It is also simpler, faster, and cheaper — requiring only thorough handwashing and a clean catheter rather than sterile gloves, drapes, and antiseptics — which means it can be done almost anywhere and is easier to keep up with. Consistent adherence is the most important factor in preventing complications.

How often should I catheterize?

Most people catheterize about four to six times a day, roughly every four to six hours, on a schedule similar to normal urination. The exact frequency is set by your healthcare provider based on your needs. The key principle is to avoid letting the bladder become overfull, which protects your kidneys and lowers infection risk.

Is it normal to see a little blood when starting CIC?

A small amount of blood or mild irritation is common in the first few catheterizations as your body adjusts, and it usually resolves quickly. However, you should contact your healthcare provider if bleeding persists, or if you develop fever, worsening pain or burning, or cloudy, foul-smelling urine that doesn’t improve, as these can signal an infection.

What should I do if I feel resistance while inserting the catheter?

Never force the catheter. If you feel resistance, pause, take a slow deep breath, and relax — tension in the muscles is a common cause. Then try again with gentle, steady pressure. For men, holding the penis at the correct angle helps the catheter pass more easily. If you still cannot insert it or cannot drain urine, contact your healthcare provider.

Disclaimer: This content is written and reviewed by Dr. Soarawee Weerasopone, a board-certified urologist at Bangkok Hospital Headquarters. It is intended for educational purposes only and does not constitute medical advice. Always follow the specific instructions given by your own healthcare provider, and consult a qualified professional before starting or changing any medical routine.