Evaluation of Urinary Incontinence


Medication

Effect

Alpha agonist

Urinary retention

Alpha blockers

Urinary leak

Alcohol

Frequency, polyuria

Anticholinergics

Urinary retention/functional incontinence

Caffeine

Frequency, urgency, polyuria

Calcium channel blockers

Urinary retention, nocturnal diuresis

Diuretics

Frequency, polyuria

Narcotic analgesics

Urinary retention/functional incontinence



Obstetric history, in particular the parity, mode of delivery, instrumental deliveries, and birth weight, can identify some of the risk factors. Gynecological history such as presence of pelvic mass – fibroids or ovarian cysts – and the menopausal status are relevant. Past surgical history of complex pelvic surgeries, surgery for UI or pelvic organ prolapse, low spinal surgeries, or rectal surgeries can either be inciting or precipitating factors in UI.

The history should be able to categorize the type of incontinence (e.g., stress, urgency, or mixed); however one needs to remember that occasionally urgency incontinence may be triggered by activities such as coughing and can mimic stress incontinence. Mixed incontinence is very common and in these cases further management should be directed towards the predominant symptom [5].



Physical Examination


The primary purpose of physical examination is to exclude confounding or contributing factors to the incontinence or its management. A complete physical examination should be performed, with emphasis on neurologic assessment and on abdominal, pelvic, and rectal examinations. The general examination should include height and weight, which will allow for objective assessment of body mass index, as obesity is an established risk factor of UI [5]. Assessment of the gait and mobility of the patient can help to rule out a functional etiology for the UI.

The abdominal examination will allow evaluation of scars and palpation for possible distended bladder and pelvic mass. The neurologic examination concentrates on the sacral segments predominantly along with lower lumbar segments. This includes, but not limited to, testing of lower limb tone, sensation, reflexes, perineal sensation, and reflexes such as bulbocavernosus or anal reflex.

Local examination concentrates on demonstration of urinary leak, presence of prolapse, atrophic vaginal changes and pelvic mass. Evidence of pelvic organ prolapse (POP) beyond the hymen is consistent with complicated SUI because the prolapse can produce a relative obstruction of urethra that can impair bladder emptying. Therefore, it is recommended that all pelvic compartments (anterior, posterior, and apical) be assessed individually. When POP is reduced with a nonobstructing pessary or large cotton swabs, SUI may become apparent or worsen [6].

Stress urinary incontinence should be objectively demonstrated before any anti-incontinence surgery is performed. Visualization of fluid loss from the urethra simultaneous with a cough is diagnostic of SUI. Delayed fluid loss is considered a negative cough stress test result and suggests cough-induced detrusor overactivity [5]. The cough stress test can be performed with the patient in the supine position during the physical examination. However, if urine leakage is not observed, the cough stress test needs to be repeated with the patient standing and with a full bladder (or a minimum bladder volume of 300 mL) to maximize test sensitivity [7].

Support to the bladder neck is assessed by evaluating the mobility of the urethrovesical junction. Urethral hypermobility is defined as a 30° or greater displacement of urethra from the horizontal (measured with a cotton tip swab in urethra) with the patient in supine lithotomy position and straining – referred to as the “Q-tip test.” This test is not recommended in the routine evaluation of patients with UI. Other methods of evaluating urethral mobility include measurement of point Aa of the POP Quantification system, visualization (inaccurate method), ultrasonography, and lateral cystourethrogram. Women with stress incontinence who have good urethral mobility have a lesser chance for failure of mid-urethral sling procedures. In women with SUI without urethral hypermobility, where leak can be due to intrinsic sphincter deficiency (ISD), bulking agents were considered to be a more appropriate surgical option [8]. This notion is however being increasingly questioned with use of mid-urethral slings, where cure rate of 78 % is quoted with tension-free vaginal tape (TVT) in patients with ISD [9].

Digital assessment of the pelvic floor muscle contraction and grading it using modified Oxford grading scale (Table 4.2) can be helpful in discussing management options such as pelvic floor exercises for SUI.


Table 4.2
Modified Oxford grading scale for pelvic floor muscles




























Grade

Definition

0

No contraction

1

Flicker of contraction

2

Weak muscle activity

3

Moderate muscle contraction

4

Good muscle contraction

5

Strong muscle contraction


Investigations



Bladder Diaries


A reliable method of documenting the frequency of incontinent episodes is essential for outcome assessment in both clinical practice and research studies. Bladder diaries, completed prospectively by the patient, have been widely used for this purpose [10]. Bladder diaries are used to document each cycle of filling and voiding over a number of days and can provide information about urinary frequency, urgency, diurnal and nocturnal cycles, functional bladder capacity, and total urine output. They also record leakage episodes, fluid intake, and pad changes and give an indication of the severity of the problem. They may also be used for monitoring the effects of treatment. Encouraging women to complete a minimum of 3 days of diary, covering variations in their usual activities, such as both working and leisure days is useful [3].

In addition, use of disease-specific questionnaires assessing quality of life is invaluable in clinical evaluation.


Urinalysis


Urinalysis determines any evidence of hematuria, pyuria, glycosuria, or proteinuria. Urinary tract infections can be identified using urinalysis and treated before initiating further investigation or therapeutic intervention for UI [5]. If urinalysis tests positive for both leucocytes and nitrites, a midstream urine specimen is sent for culture and analysis of antibiotic sensitivities. If symptomatic, these women can be prescribed an appropriate course of antibiotic treatment pending culture results. If women do not have symptoms of UTI but their urine tests positive for both leucocytes and nitrites, do not offer antibiotics without the results of midstream urine culture [3].

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Jul 5, 2017 | Posted by in UROLOGY | Comments Off on Evaluation of Urinary Incontinence

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