Incontinence Flashcards
True or False: One of the most common reasons for institutionalization is incontinence
True
Prevalence of incontinence increases steadily after what age?
65
What percentage of women are affected over the age of 60 that are non-institutionalized?
40%
Type of incontinence that occurs with physical exertion
Stress incontinence
Risk factors for stress incontinence for women (3)
- Pregnancy
- Childbirth
- Menopause
Risk factors for stress incontinence for men (2)
- Lower UT surgery
2. Urethral sphincter injury
Other causes of stress incontinence (4)
- Obesity
- Aging
- Alpha-antagonists
- ACE inhibitors
What is the pathophysiologic problem with stress incontinence?
Decreased urethral sphincter closure forces due to loss of muscle tone/relaxation of muscle
What is characteristic of the nature of stress incontinence?
Episodic, low volume leakage
Incontinence characterized by leakage of urine and feelings of urgency (sensory response of compelling desire to void)
Urge incontinence or OAB (over-active bladder)
Risk factors for urge incontinence (3)
- Aging
- Neurologic disease (stroke, PD, MS)
- Bladder outlet obstruction in men (BPH, prostate cancer)
Drug induced causes/triggers of OAB (3)
- Diuretics
- Alcohol
- AChEase inhibitors
Pathophysiology of urge incontinence (OAB)
Involuntary bladder (detrusor) muscle contraction during urinary storage phase in the absence of infection
Characteristic of the nature of urge incontinence
Large volume leakage
Involuntary leakage of urine from an overfilled bladder that cannot empty
Overflow incontinence (chronic urinary retention)
Causes of overflow incontinence
More common in men:
1. Bladder outlet obstruction
In women
2. Kinking or obstruction of urethra, radical pelvic surgery
Other causes of overflow incontinence (5)
- Neurologic dysfunction
- Diabetes
- Alpha adrenergic agonists
- TCAs
- Opioid analgesics
Two pathophysiologic mechanisms of overflow incontinence
- Bladder is full but cannot empty due to bladder dysfunction (too much detrusor relaxation)
- Urethral sphincter hyperfunction (too much constriction)
Other types of incontinence
- Mixed
- Functional: UI linked primarily to disease but there is no dysfunction of the urinary tract
- Dementia, immobility, medications
Clinical presentation of stress incontinence (3)
- Leakage with physical activity
- Low volume
- No nocturia
Clinical presentation of urge incontinence (3)
- More than eight times a day
- High volume leakage
- Nocturia more than once a night
- Enuresis (involuntary leakage at nighttime)
Clinical presentation of overflow incontinence (5)
- Lower abdominal fullness
- Hesitancy, straining to void, decreased force of stream
- Interrupted stream
- Sense of incomplete bladder emptying
- **Increased post-void residual volume (PVR)
What is a urinalysis and urine culture used for?
Rule out UTI
What do urodynamic studies measure?
- Postvoid residual volume
2. Bladder pressure