BNF - Chapter 7 - Genito-Urinary System Flashcards
(294 cards)
What is urinary incontinence?
Urinary incontinence is the involuntary leakage of urine and can range in severity and nature.
What can urinary incontinence be due to?
can be the result of functional abnormalities in the lower urinary tract, or due to other illnesses.
How many sub classes of urinary incontinence are there?
4
What are the subclasses of urinary incontinence?
- Stress
- Urgency
- mixed
- Overflow incontinence
What is stress incontinence?
Stress incontinence is the involuntary leakage on effort or exertion, or on sneezing or coughing, and is associated with the loss of pelvic floor support and/or damage to the urethral sphincter.
What is urgency incontinence?
Urgency incontinence is involuntary leakage which is accompanied, or immediately preceded by a sudden compelling desire to pass urine that is difficult to delay. It is often part of a larger symptom complex known as overactive bladder syndrome. This syndrome is defined as urinary urgency, which may or may not be accompanied by urgency incontinence, but is usually associated with increased frequency and nocturia. The symptoms are thought to be caused by involuntary contractions of the detrusor muscle
What is mixed incontinence?
Mixed urinary incontinence is involuntary leakage associated with both urgency and stress, however, one type tends to be predominant.
What is overflow incontinence?
Overflow incontinence is a complication of chronic urinary retention and occurs when a person cannot empty their bladder completely and it becomes over distended.
This may result in continuous, or frequent loss of small quantities of urine
What are some other types of urinary incontinence?
Other types include continuous urinary incontinence, where there is constant leakage of urine which may be due to the severity of the persons’ condition or may be due to an underlying cause, such as a fistula. Incontinence may also be situational, for example during sexual intercourse or when a person is giggling.
What is the main risk factor for developing any type of incontinence?
- Older age; this is due to the physiological changes that occur with natural aging
Other than age what are some other risk factors of stress incontinence?
pregnancy, vaginal delivery, obesity, constipation, family history, smoking, lack of supporting tissue (such as in prolapse or hysterectomy) and use of some drugs such as ACE inhibitors (can cause cough) and alpha-adrenergic blockers (relax the bladder outlet and urethra).
Which conditions may increase detrusor muscle overactivity and therefore worsen urgency incontinence?
These include conditions that affect the lower urinary tract such as; Urinary-tract infections, urinary obstruction, or oestrogen deficiency, those affecting the nervous system such as; stroke, dementia, and Parkinson’s disease, and systemic conditions such as; diabetes mellitus or hypercalcaemia
Side effects of some durgs may also increase detrusor muscle overactivity or indirectly contribute to urgency incontinence; what do they include?
cholinesterase inhibitors, drugs that cause constipation, and those with anticholinergic effects.
What effect do diuretics, alcohol and caffeine have?
They all increase urine production and can cause polyuria, frequency, urgency and nocturia
What non drug treatment advice is given to women with incontinence?
- modify fluid intake
- if BMI is 30kg/m2 or greater, be advised to lose weight
- For those with an overactive bladder, a reduction in caffeine intake should be trialled.
When can intravaginal and intraurethral devices be used?
Should only be used when required to prevent leakage at specific times, for example during exercise
What is the non drug treatment for urgency incontinence in women?
Women should be offered bladder training for at least 6 weeks as first-line treatment.
If frequency is a problem and satisfactory benefit from bladder training is not achieved, drug treatment for an overactive bladder should be added.
What is the non-drug treatment for stress incontinence?
Women should trial supervised pelvic floor muscle training for at least 3 months, which should include at least 8 contractions performed 3 times per day
What is the non-drug treatment for mixed incontinence?
Women should trial both bladder training for at least 6 weeks and supervised pelvic floor muscle training for at least 3 months, which should include at least 8 contractions performed 3 times per day. If frequency is a problem and satisfactory benefit from bladder training is not achieved, drug treatment for an overactive bladder should be added.
What should be performed in all women presenting with incontinence?
A urine dipstick test should be performed in all women presenting with incontinence to test for active infection or haematuria, and analysed along with the patients symptoms.
When should women be referred to see a specialist?
if there is:
persistent bladder or urethral pain;
pelvic mass that is clinically benign;
associated faecal incontinence;
suspected neurological disease, or urogenital fistulae;
history of previous incontinence surgery, pelvic cancer surgery or pelvic radiation therapy;
recurrent or persistant UTI for those aged over 60; see Urinary-tract infections
palpable bladder after voiding, or symptoms of voiding difficulty.
When is an urgent referral required?
Urgent referral should occur in women aged 45 years or older if there is unexplained visible haematuria without UTI, or visible haematuria persisting or recurring despite successful treatment of UTI. Urgent referral is also required in women aged 60 years or older with unexplained non-visible haematuria and either dysuria or raised white cell count.
What is the drug treatment for urgency incontinence?
An anticholinergic drug should be considered for women who have trialled bladder training, where frequency is a problem and symptoms persist.
What is first-line drug-treatment for urgency incontinence?
Immediate release oxybutynin hydrochloride, immediate release tolterodine tartrate, or darifenacin can be used first-line