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Urinary Incontinence. A Practical Approach. What is urinary incontinence?. Involuntary loss of urine. Epidemiology. Prevalence 10-30% in females age <64 15-30% in individuals in community >50% in long-term care Cost >$20 billions a year Mainly protective garment.
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Urinary Incontinence A Practical Approach
What is urinary incontinence? Involuntary loss of urine
Epidemiology • Prevalence • 10-30% in females age <64 • 15-30% in individuals in community • >50% in long-term care • Cost • >$20 billions a year • Mainly protective garment
Morbidity and mortality • Psychological effects • Depression • Social withdrawal • Skin infection • Sleep deprivation
Pathophysiology Bladder hyper or hypoactivity Outlet obstruction or insufficiency
Start the work-up? • History…history…history… • Ask since patients are frequently embarrassed to discuss about urinary incontinence
What to ask? Think through the possible causes of urinary incontinence
Classifications? • Urge • Stress • Overflow • Mixed • Functional
Most common type? Urge incontinence
What is urge incontinence? Overactive bladder
Causes of urge incontinence? • Idiopathic • Upper motor neuron problem • Lack of CNS inhibition • Stroke, cervical stenosis, multiple sclerosis • Age-related • Bladder irritation: UTI, tumor, and stones
Clinical presentation of urge incontinence? • Urge sensation to void, a delay, then void • Leak a large amount of urine from bladder contraction
What is stress incontinence? Leak of urine with increased abdominal pressure but without bladder contraction
Causes of stress incontinence? • Insufficient urethral support from pelvic muscles and fascia • Urethral sphincter insufficiency • From operative trauma and scarring and mucosal atrophy due to menopause • Leak urine without stress maneuver • Urethral instability • Controversial • Urethral spontaneously relaxes
Clinical presentations of stress incontinence? • Associated with increased intraabdominal pressure, such as coughing, laughing, sneezing • Small amount of urine leakage occurs instantly after the stress maneuver
What is overflow incontinence? Urinary retention leading to leakage of urine when the intravesicular pressure exceeds that of urethral sphincter
Causes of overflow incontinence? • Obstructive process • BPH – commonly present with urinary retention rather than overflow incontinence • Surgical correction for urinary incontinence • Large cystocele that kinks the urethra • Detrusor underactivity • Peripheral neuropathy: diabetes mellitus, syphilis, vitamin B12 defiency • Damage to spinal detrusor afferents: tumor, disc herniation • Detrusor fibrosis from chronic obstruction
Clinical presentations of overflow incontinence? • Obstructive symptoms: hesitancy, frequency, urgency, post-void dribbling • Leaking urine continually • Neurological problems
Mixed incontinence • Stress and urge • Detrusor hyperactivity with impaired contractility (DHIC): precipitant urgency and elevated postvoid residual without outlet obstruction
Functional • Impaired mental status • Impaired mobility • Urinary tract infection • Fecal impaction
Functional • Medications • Anticholinergic agents – retention, fecal impaction • Diuretics – not thiazide • Calcium blockers • Alpha-blocker – relax urethral sphincter • Narcotics – fecal impaction, sedation • Alcohol – sedation
History? • Usual: duration, frequency, aggravating, alleviating factors, associated symptoms • Diary: time, leak?, amount, associated symptoms • Neurologic symptoms
Physical exam? • Mental status • Mobility • Pelvic exam • Cystocele • Anal wink • Bulbocavernosus reflex • Spinal • Cervical stenosis • Occult spina bifida
Tests? • Postvoid residual • Normal: 50-150 mL • Abnormal: >200 mL • Urinalysis • Q-tip • Bedside cystometry • Urodynamic tests – mainly for surgery and uncertain diagnosis
Treatment for urge incontinence? • Bladder training:timed voiding & suppressing the urgency through relaxation technique • Biofeedback • Medications • Oxybutynin – ER and patch have less side-effects • Tolterodine – less side-effect than oxybutynin • Estrogen but not estrogen/progesterone
Treatments for stress incontinence? • Pelvic muscle exercise • Biofeedback: weighed vaginal cone • Pessary • Medications • Imipramine – alpha-agonist and anticholinergic effect may be used in mixed urge and stress incontinence • Topical estrogen – treat mucosa atrophy and increase the number and sensitivity of alpha receptors • Surgery • Most effective treatment • Burch retropubic urethropexy
Treatments for overflow incontinence? • Relieve the obstruction • Catherization • Improve bladder emptying with Valsalva maneuver, Crede maneuver, “double” voiding