Clean Intermittent Self-Catheterisation — How It Works, Benefits & Recovery — Procedure Guide, Recovery & Risks | MyMedicPlus

Clean intermittent self-catheterisation (CISC), also called clean intermittent catheterisation (CIC), is a bladder management technique in which a person inserts a thin flexible catheter through the urethra into the bladder at regular intervals to completely drain urine, then removes it until the next catheterisation. Unlike indwelling catheters, CISC is performed intermittently — mimicking the natural fill-and-empty cycle of the bladder — and is well established as the gold-standard management for incomplete bladder emptying and neurogenic bladder. The term 'clean' distinguishes it from 'sterile' technique: hands are washed before each procedure, but surgical sterility is not required for community-based self-catheterisation, reflecting studies showing that the clean technique carries equivalent or lower infection rates compared to sterile technique in compliant patients. CISC preserves upper urinary tract function by preventing chronically elevated intravesical pressure from retention, reduces the risk of urinary tract infections compared to indwelling catheters, and maintains bladder capacity and compliance. It is taught to patients — including those with limited hand function after spinal cord injury — by specialist continence nurses or urology nurse practitioners in an outpatient or rehabilitation setting.

CISC is indicated for any condition causing incomplete bladder emptying (post-void residual volume consistently above 100–150 mL) or complete urinary retention that is unsuitable for surgical correction. The most common indication is neurogenic bladder dysfunction due to spinal cord injury at any level, multiple sclerosis (where detrusor hypo- or areflexia causes incomplete emptying), spina bifida (myelomeningocele), Parkinson's disease, and other neurological conditions affecting bladder innervation. Non-neurogenic indications include bladder outlet obstruction where surgery has been declined or is not appropriate, post-surgical retention following radical prostatectomy, low anterior resection, or gynaecological surgery causing temporary or permanent detrusor underactivity, medication-induced retention (anticholinergics, alpha-adrenergic agents, opioids), and detrusor underactivity (underactive bladder) in the elderly. In women, CISC may be indicated for Fowler's syndrome — a condition of sphincter dysfunction causing painless urinary retention in young women. Successful CISC requires adequate hand function, cognitive ability to learn the technique, motivation, and physical access to the urethral meatus. Patients with limited dexterity can use adapted catheters with special handles.

Before each catheterisation, hands are washed thoroughly with soap and water or an alcohol hand gel. Women usually perform the procedure sitting on the toilet or standing with one foot raised on the seat; a mirror or tactile guidance helps locate the urethral meatus, which lies between the clitoris above and the vaginal opening below. Men perform the procedure sitting or standing, retracting the foreskin if applicable. A lubricated catheter (hydrophilic pre-coated catheters are lubricated by dipping in water; uncoated catheters require application of lubricating gel) is gently inserted into the urethral meatus and advanced slowly until urine begins to flow — typically 6–8 cm in women and 15–20 cm in men. The catheter is held in place until urine flow ceases completely, indicating full drainage. Gentle rotation or slight withdrawal may assist drainage of any residual urine. The catheter is then slowly withdrawn. Single-use hydrophilic-coated catheters are discarded after each use; reusable catheters are cleaned with soap and water and stored dry between uses (though single-use is now preferred). The procedure is performed 4–6 times daily, timed to keep volumes drained below 400–500 mL to avoid bladder over-distension. Before each catheterisation, hands are washed thoroughly with soap and water. Women usually perform the procedure sitting on the toilet or standing with one foot raised; a mirror or tactile guidance helps locate the urethral meatus between the clitoris anteriorly and vaginal opening posteriorly. Men sit or stand. A well-lubricated catheter tip is gently inserted into the urethral meatus and advanced 5–6 cm in women (until urine flows) or 15–20 cm in men until urine flows from the catheter. The bladder is allowed to drain completely — squeezing the lower abdomen gently (Credé manoeuvre) helps empty residual urine. Once drainage ceases, the catheter is gently removed and cleaned with soapy water or a designated catheter cleaner if using reusable catheters. Reusable catheters may be used up to 7 days with appropriate cleaning and storage in a clean dry container. Disposable single-use hydrophilic catheters come pre-lubricated and individually wrapped — they are more hygienic and associated with lower UTI rates than reusable catheters. The catheterisation frequency (typically 4–6 times daily) is adjusted to maintain bladder volumes below 400–500 mL at each catheterisation.

CISC is the most effective non-surgical strategy for managing incomplete bladder emptying and offers significant advantages over indwelling catheterisation. Prevention of upper urinary tract damage is the primary medical benefit: sustained high post-void residual volumes cause progressive hydronephrosis, vesicoureteric reflux, and ultimately chronic kidney disease — CISC prevents this by maintaining low intravesical pressures and complete emptying. Compared to indwelling urethral or suprapubic catheters, CISC is associated with significantly lower rates of catheter-associated urinary tract infections (CAUTIs), bacteriuria-related complications, and urethral trauma. Quality of life studies consistently show that patients using CISC report better social functioning, fewer hospitalisation episodes, and greater independence compared to indwelling catheter users. Sexual activity is preserved without an indwelling catheter in situ. Bladder capacity and compliance are often maintained or improved over time, particularly in neurogenic patients where the bladder is managed at low pressures. In patients with Fowler's syndrome, CISC restores normal daily function and prevents the need for permanent surgical diversion. Patient adherence to CISC is 70–85% at one year with appropriate training and follow-up support.

CISC is very safe when performed with correct technique, but recognised complications include: urinary tract infections — the most common complication, with symptomatic UTI rates of 1–3 episodes per year in most series; asymptomatic bacteriuria is common in CISC users and does not require antibiotic treatment unless symptomatic (fever, pain, haematuria). Urethral trauma from incorrect technique — false passage creation, urethral perforation, or urethral stricture formation — is uncommon with hydrophilic catheters but more frequent with reusable uncoated catheters requiring lubricant; male anatomy (longer and angulated urethra) is more vulnerable. Haematuria (blood in urine) from mucosal trauma is common initially and resolves with improved technique. Epididymo-orchitis (in men) can complicate repeated traumatic catheterisation. Long-term: urethral stricture from repeated catheterisation affects approximately 5% of male CISC users over 5 years, detectable by cystoscopy or urethrography. Catheter-related allergies to latex or lubricant components are rare. Failure to accept or continue CISC (non-adherence) remains the major barrier to effectiveness in clinical practice.

CISC is an ongoing self-management technique rather than a one-time procedure. The initial training session, conducted by a specialist continence nurse, typically takes 30–60 minutes and covers catheter selection, technique, trouble-shooting, and recognition of complications. A follow-up assessment at 4–6 weeks confirms technique, assesses post-void residuals by bladder ultrasound or catheter volumes, and adjusts catheterisation frequency. Annual urology or continence nurse review is recommended for all established CISC users. Hydration advice (1.5–2 litres of fluid per day) prevents concentrated urine that increases infection and stone risk. Urinalysis is performed only when symptomatic UTI is suspected (frequency, dysuria, fever); routine surveillance urine cultures are not recommended in asymptomatic CISC users per European Association of Urology guidelines. Catheter size (typically 12–14 French), type (hydrophilic single-use preferred), and frequency are adjusted based on residual volumes, catheterisation volumes, and patient experience. Patients travelling internationally should be provided with sufficient catheter supplies and information about how to obtain supplies abroad.