Urogynaecology Flashcards
WHAT ARE THE RISK FACTORS FOR URINARY INCONTINENCE?
- Advancing age
- Previous pregnancy and childbirth
- High body mass index
- Hysterectomy
- Family history
WHAT IS STRESS INCONTINENCE?
Unintentional loss of urine.
Physical movement or activity — such as coughing, laughing, sneezing, running or heavy lifting — puts pressure (stress) on your bladder, causing you to leak urine.
Stress incontinence is not related to psychological stress
What is the cause of stress incontinence?
Stress incontinence occurs when the muscles and other tissues that support the urethra (pelvic floor muscles) and the muscles that control the release of urine (urinary sphincter) weaken
What are the symptoms of stress incontinence?
Leak urine when you:
- Cough or sneeze
- Laugh
- Bend over
- Lift something heavy
- Exercise
- Have sex
What is the diagnosis for stress incontinence?
- Bladder diary for a minimum of 3 days
- Physical exam, which may include a rectal exam and a pelvic exam in women
- Urine sample/Urinalysis to test for infection, traces of blood or other abnormalities
- Brief neurological exam to identify any pelvic nerve problems
- Urinary stress test, in which the doctor observes urine loss when you cough or bear down
What is the treatment for stress incontinence?
1) Pelvic floor muscle retraining, 8x3 per day
2) Surgical procedures: e.g. retropubic mid-urethral tape procedures
3) Duloxetine may be offered to women if they decline surgical procedures
a combined noradrenaline and serotonin reuptake inhibitor
mechanism of action: increased synaptic concentration of noradrenaline and serotonin within the pudendal nerve → increased stimulation of urethral striated muscles within the sphincter → enhanced contraction
WHAT IS URGE INCONTINENCE?
- Due to detrusor overactivity
- The urge to urinate is quickly followed by uncontrollable leakage ranging from a few drops to complete bladder emptying
What are the symptoms of urge incontinence?
- Leak urine or have “urge incontinence.” This means urine leaks when you feel the sudden urge to go.
- Urinate frequently. You may need to go to the bathroom many times during the day.
- Wake up at night to pass urine.
How do you diagnose urge incontinence?
- Bladder diaries should be completed for a minimum of 3 days
- Vaginal examination to exclude pelvic organ prolapse and ability to initiate voluntary contraction of pelvic floor muscles (‘Kegel’ exercises)
- Urine dipstick and culture
- Urodynamic studies
-
Cystometry
- Spikes of increased intravesical pressure appearing without the specific instruction to void, and which cannot be inhibited.
What is the treatment for urge incontinence?
- First bladder retraining for a minimum of 6 weeks
- FIRST LINE - ANTIMUSCARINICS
Oxybutynin - avoid in frail old ladies
Tolterodine or
Darifenacin - Mirabegron (a beta-3 agonist) may be useful if there is concern about anticholinergic side-effects in frail elderly patients
How is stress incontinence different from urgency incontinence/overactive bladder (OAB)?
Who is stress incontinence more common in?
If you have urgency incontinence or OAB, your bladder muscle contracts, causing a sudden urge to urinate before you can get to the bathroom.
Stress incontinence is much more common in women than in men.
WHEN SHOULD A VESICOVAGINAL FISTUAL BE SUSPECTED?
Vesicovaginal fistulae should be suspected in patients with continuous dribbling incontinence after prolonged labour and from an area with limited obstetric services.
How do you diagnose a vesicovaginal fistula?
Urinary dye studies
What is overflow incontinence?
Overflow incontinence: due to bladder outlet obstruction, e.g. due to prostate enlargement
What investigations suggest overflow incontinence?
Normal bladder function should have a voiding detrusor pressure rise of < 70 cm H20 with a peak flow rate of > 15 ml/second
A high voiding detrusor pressure with a low peak flow rate is indicative of bladder outlet obstruction.