1.1 Assessment of lower urinary tract dysfunction in patients with neurological conditions
Assessment applies to new people, those with changing symptoms and those needing periodic reassessment of their urinary tract management. The interval between routine assessments will be guided by the person's particular circumstances (for example, their age, diagnosis and type of management) but should not exceed 3 years.
These recommendations on assessment apply to people who have a neurological condition. If the assessment shows the incontinence to be non-neurogenic, see the NICE guidelines on lower urinary tract symptoms in men and urinary incontinence and pelvic organ prolapse in women for guidance on management.
Clinical assessment
1.1.1
When assessing lower urinary tract dysfunction in a person with neurological disease, take a clinical history, including information about:
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urinary tract symptoms
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neurological symptoms and diagnosis (if known)
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clinical course of the neurological disease
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bowel symptoms
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sexual function
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comorbidities
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use of prescription and other medication and therapies.
1.1.2
Assess the impact of the underlying neurological disease on factors that will affect how lower urinary tract dysfunction can be managed, such as:
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mobility
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hand function
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cognitive function
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social support
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lifestyle.
1.1.3
Undertake a general physical examination that includes:
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measuring blood pressure
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an abdominal examination
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an external genitalia examination
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a vaginal or rectal examination if clinically indicated (for example, to look for evidence of pelvic floor prolapse, faecal loading or alterations in anal tone).
1.1.4
Carry out a focused neurological examination, which may need to include assessment of:
1.1.5
Undertake a urine dipstick test using an appropriately collected sample to test for the presence of blood, glucose, protein, leukocytes and nitrites. Appropriate urine samples include clean-catch midstream samples, samples taken from a freshly inserted intermittent sterile catheter and samples taken from a catheter port. Do not take samples from leg bags.
1.1.6
If the dipstick test result and person's symptoms suggest an infection, arrange a urine bacterial culture and antibiotic sensitivity test before starting antibiotic treatment. Treatment need not be delayed but may be adapted when results are available.
1.1.7
Be aware that bacterial colonisation will be present in people using a catheter and so urine dipstick testing and bacterial culture may be unreliable for diagnosing active infection.
1.1.8
Ask people and their family members and carers to complete a 'fluid input/urine output chart' to record fluid intake, frequency of urination and volume of urine passed for a minimum of 3 days.
1.1.9
Consider measuring the urinary flow rate in people who are able to void voluntarily.
1.1.10
Measure the post-void residual urine volume by ultrasound, preferably using a portable scanner, and consider taking further measurements on different occasions to establish how bladder emptying varies at different times and in different circumstances.
1.1.11
Consider making a referral for a renal ultrasound scan in people who are at high risk of renal complications such as those with spina bifida or spinal cord injury.
1.1.12
Refer people for urgent investigation if they have any of the following 'red flag' signs and symptoms:
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haematuria
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recurrent urinary tract infections (for example, 3 or more infections in the last 6 months)
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loin pain
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recurrent catheter blockages (for example, catheters blocking within 6 weeks of being changed)
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hydronephrosis or kidney stones on imaging
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biochemical evidence of renal deterioration.
1.1.13
Be aware that unexplained changes in neurological symptoms (for example, confusion or worsening spasticity) can be caused by urinary tract disease, and consider further urinary tract investigation and treatment if this is suspected.
1.1.14
Refer people with changes in urinary function that may be due to new or progressing neurological disease needing specialist investigation (for example, syringomyelia, hydrocephalus, multiple system atrophy or cauda equina syndrome).
1.1.15
Assess the impact of lower urinary tract symptoms on the person's family members and carers and consider ways of reducing any adverse impact. If it is suspected that severe stress is leading to abuse, follow local safeguarding procedures.
Urodynamic investigations
1.1.16
Do not offer urodynamic investigations (such as filling cystometry and pressure-flow studies) routinely to people who are known to have a low risk of renal complications (for example, most people with multiple sclerosis).
1.1.17
Offer video-urodynamic investigations to people who are known to have a high risk of renal complications (for example, people with spina bifida, spinal cord injury or anorectal abnormalities).
1.1.18
Offer urodynamic investigations before performing surgical treatments for neurogenic lower urinary tract dysfunction.
Terms used in this guideline
Alpha-blocking agents
Drugs that inhibit the response to sympathetic impulses by blocking the alpha receptor sites of effector organs. Because they inhibit the contraction of non-vascular smooth muscle such as that found at the bladder neck and within the prostate, alpha-blockers are commonly used to treat bladder outflow obstruction in men with normally innervated urinary tracts. Also known as 'alpha adrenergic blocking agents' or 'alpha adrenergic antagonists'.
Antimuscarinic drugs
An anticholinergic agent that specifically blocks the muscarinic form of the cholinergic receptor. Because they decrease the responsiveness of the bladder wall muscle to stimulating nerve impulses, antimuscarinic drugs are used in the management of the overactive bladder.
Augmentation cystoplasty
Surgical reconstruction of the bladder using an isolated intestinal segment to augment bladder capacity.
Autologous fascial sling surgery
A procedure to treat stress urinary incontinence, in which a harvested strip of rectus fascia is used to provide support to the urethra. Also see urethral tape and sling surgery.
Behavioural management programmes
Behavioural therapies are usually used to treat urge urinary incontinence and mixed urinary incontinence. Such therapies include:
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Timed voiding where the person is asked to void at set time intervals, rather than in response to a sense of bladder filling.
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Bladder retraining where intervals between voids are progressively increased, or the patient is asked to delay voiding for a specific time when they experience the need to void.
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Habit retraining involves identifying an incontinent person's toileting pattern and developing an individualised toileting schedule in order to pre-empt episodes of incontinence.
Biofeedback
The process of becoming aware of various physiological functions using instruments that provide information on the activity of those same systems, with a goal of being able to manipulate them at will.
Bladder stone
Stone found in the urinary bladder formed by crystallisation and concretion of salts from the urine and containing phosphate and oxalate salts of calcium or ammonium. Stones typically form in conjunction with bacterial colonisation of the urine, for example, when an indwelling catheter is present, or bladder emptying is incomplete.
Cauda equina compression
A serious condition caused by compression of the nerve roots in the lower portion of the spinal canal that supply the lower limbs and the bladder and urethral sphincter.
Cystectomy
Surgical removal of all or part of the urinary bladder.
Filling cystometry
Part of urodynamic testing in which the bladder is slowly filled with liquid while pressure and volume measurements are taken in order to assess bladder function.
Hydronephrosis
Distension and dilation of the renal pelvis and calyces, usually caused by obstruction of the free flow of urine from the kidney. Untreated, it leads to progressive atrophy of the kidney as a result of back pressure.
Ileal conduit diversion
Surgical technique for the diversion of urine after a patient has had their bladder removed. Urine is transported from the ureters (the tubes draining urine from the kidneys) to a stoma on the abdominal wall using an isolated segment of small intestine.
Neurogenic
Originating in the nerves or nervous tissue.
Neuromuscular electrical stimulation
Procedure used to strengthen healthy muscles or to maintain muscle mass during or following periods of enforced inactivity. This helps to maintain or gain range of motion, to facilitate voluntary motor control, and temporarily reduces spasticity when the nerve supply to the muscle is intact. This procedure involves sending small electrical impulses through the skin to the underlying nerves and muscles to create an involuntary muscle contraction.
Overactive bladder
Produces symptoms of urinary urgency, with or without urge incontinence, usually with an increased frequency of micturition. The strong, sudden need to urinate is usually caused by involuntary contractions of the bladder or 'bladder spasms'.
Pelvic floor muscle training
Daily training programme to strengthen the muscles that support the uterus, bladder and other pelvic organs and help prevent accidental urine leakage. Also called Kegel exercises or pelvic muscle rehabilitation.
Pelvic floor prolapse
Loss of muscle tone and/or ligamentous elasticity resulting in the descent of the uterus or other pelvic organs into the vagina. If severe, the prolapse can protrude out of the vaginal orifice.
Pressure-flow studies
Simultaneous measurement of bladder pressure and flow rate during the voiding phase of the micturition cycle. The test is used to assess the process of bladder emptying. For example, bladder outflow obstruction can be diagnosed if there is a low urinary flow rate in conjunction with a raised bladder pressure during voiding.
Prompted voiding
A behavioural management programme that is used to encourage people to initiate their own toileting. It usually involves positive reinforcement and education of both the person with incontinence and their carer(s).
Renal scintigraphy
Photographic recording, using a gamma camera, of the distribution of a radioisotope (radioactive substance) given by injection. The radioisotope accumulates in the kidneys, allowing pictures to be produced showing details of both kidney structure and function.
Sacral agenesis
A condition that exists when either part or all of the sacrum is absent due to a failure of the sacral spine to develop normally. In many cases, some or all of the nerves that supply the pelvic organs will also have failed to develop normally.
Spina bifida
A condition in which the bones of the spine do not close due to a failure of normal development in the fetus. In cases of myelomeningocele, the bony abnormality is accompanied by abnormal development of the spinal cord or nerves and their covering membranes, which leads to abnormalities in the nerve supply to the lower limbs and pelvic organs.
Spinal dysraphism
A general term that encompasses a number of different developmental abnormalities of the spine and spinal cord, of which spina bifida is an example.
Stress incontinence
Stress urinary incontinence describes a symptom, a sign and a diagnosis, although it is only following urodynamic investigation that a diagnosis of urodynamic stress incontinence can be made. This condition is defined as 'the involuntary leakage of urine during increased abdominal pressure in the absence of a detrusor contraction'.
Urethral tape and sling surgery
A procedure that restores bladder control for people who lose urine when they cough or exercise. The urethral tape procedure involves positioning an artificial tape under the urethra, which is the tube that runs from the bladder through which you urinate. The tape will then rest like a hammock under the urethra, giving support and maintaining continence. A urethral tape consists of a thin mesh ribbon that is placed in order to provide support to the urethra. Urethral sling surgery involves placing a sling around the urethra to lift it back into a normal position and to exert pressure on the urethra to aid urine retention. The sling is attached to the abdominal wall. Also see autologous fascial sling surgery.
Urodynamic investigations
Investigation of the function of the lower urinary tract (the bladder and urethra) using physical measurements such as urine pressure and flow rate, as well as clinical assessment. Video-urodynamic investigations involve using a dye to fill the bladder enabling X-rays of the lower urinary tract to be taken during filling and emptying of the bladder.