OVERACTIVE BLADDER (OAB) EXAM
QUESTIONS WITH VERIFIED
ANSWERS. A+ GRADE 2025/2026.
Overactive Bladder, OAB (presentation) - ANS Detrusor muscle contracts frequently & before
bladder's full
Urinary Urgency & Urinary Frequency (differences) - ANS Urgency: sudden, compelling urge
to pass urine
Frequency: voiding > 8 times in 24 hrs
Nocturia (definition) - ANS voiding > 2 times/night
*Detrusor Muscle, Bladder, Internal & External Sphincter (description & functions)* -
ANS *Detrusor: Outer muscular layer of the bladder, mostly parasympathetic, w/ bladder
stores & expel urine*
Bladder & Internal Sphincter: sympathetic-nerve controlled
External Sphincter: controlled by somatic nervous system
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, *Overactive Bladder (pathophysiology)* - ANS *Muscarinic (M3) receptors (function in
bladder): Ach binds to M3 receptor in bladder (controls emptying & involuntary contractions of
incontinence) & in detrusor muscle (controls voluntary & involuntary contractions)
In OAB: the detrusor muscle is hyperactive --> OAB symptoms*
Functional Urinary Incontinence (definition) - ANS no bladder abnormality, may be
cognitively, socially, or physically impaired
Overflow Urinary Incontinence (definition) - ANS leakage, amt urine stored > capacity, w/o
urge, BPH is most common cause
Stress Urinary Incontinence (definition) - ANS leaks from exertion (ex. exercise, cough,
sneezing, or laughing)
Urge Urinary Incontinence (definition) - ANS can't hold urine long enough, caused by DM,
stroke, Parkinson's, or MS
Mixed Urinary Incontinence (definition) - ANS combo of urge & stress incontinence
OAB (risk factors) - ANS 1. Age > 40 y/o
2. Diseases: DM, neurologic conditions (ex. stroke, Parkinson's, dementia)
3. Lifestyle: low mobility, obesity
4. Medical Hx: hysterectomy, pelvic injury, prior vaginal delivery
5. Drugs (cough from ACE-Is, EtOH, cholinesterase inhibitors, diuretics, sedatives)
OAB (symptoms & diagnosis) - ANS S/S: Urinary urgency or frequency, nocturia
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
QUESTIONS WITH VERIFIED
ANSWERS. A+ GRADE 2025/2026.
Overactive Bladder, OAB (presentation) - ANS Detrusor muscle contracts frequently & before
bladder's full
Urinary Urgency & Urinary Frequency (differences) - ANS Urgency: sudden, compelling urge
to pass urine
Frequency: voiding > 8 times in 24 hrs
Nocturia (definition) - ANS voiding > 2 times/night
*Detrusor Muscle, Bladder, Internal & External Sphincter (description & functions)* -
ANS *Detrusor: Outer muscular layer of the bladder, mostly parasympathetic, w/ bladder
stores & expel urine*
Bladder & Internal Sphincter: sympathetic-nerve controlled
External Sphincter: controlled by somatic nervous system
1 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
, *Overactive Bladder (pathophysiology)* - ANS *Muscarinic (M3) receptors (function in
bladder): Ach binds to M3 receptor in bladder (controls emptying & involuntary contractions of
incontinence) & in detrusor muscle (controls voluntary & involuntary contractions)
In OAB: the detrusor muscle is hyperactive --> OAB symptoms*
Functional Urinary Incontinence (definition) - ANS no bladder abnormality, may be
cognitively, socially, or physically impaired
Overflow Urinary Incontinence (definition) - ANS leakage, amt urine stored > capacity, w/o
urge, BPH is most common cause
Stress Urinary Incontinence (definition) - ANS leaks from exertion (ex. exercise, cough,
sneezing, or laughing)
Urge Urinary Incontinence (definition) - ANS can't hold urine long enough, caused by DM,
stroke, Parkinson's, or MS
Mixed Urinary Incontinence (definition) - ANS combo of urge & stress incontinence
OAB (risk factors) - ANS 1. Age > 40 y/o
2. Diseases: DM, neurologic conditions (ex. stroke, Parkinson's, dementia)
3. Lifestyle: low mobility, obesity
4. Medical Hx: hysterectomy, pelvic injury, prior vaginal delivery
5. Drugs (cough from ACE-Is, EtOH, cholinesterase inhibitors, diuretics, sedatives)
OAB (symptoms & diagnosis) - ANS S/S: Urinary urgency or frequency, nocturia
2 @COPYRIGHT 2025/2026 ALLRIGHTS RESERVED
