Urology- Incontinence Flashcards
Causes of incontinence: urethral obstruction
BPH, strictures, stenosis
Causes of incontinence: impair bladder contraction
DM, MS, spinal injuries, detrusor hyperactivity
Causes of incontinence: incompetent sphincter
stress incontinence, cystocele
Causes of incontinence: bladder inflammation
UTI, interstitial cystitis
Causes of incontinence: bladder stones
obstruction, metabolic disease, UTI
Causes of incontinence: malignancy
bladder cancer, carcinoma in situ, invasive cancer
Urge incontinence/OAB
involuntary leakage of urine, involuntary contraction of bladder, detrusor hyperreflexia
Stress incontinence
Involuntary leakage with “stress”
cystitis, stones, tumor, neurologic
Overflow incontinence
leaking urine throughout the day
“Weight of urine”
Meds for OAB
Smooth muscle relaxants
Beta-3 adrenergic receptor agonists
Smooth muscle relaxants MoA
Antimuscarinic, “atropine”-like
Smooth muscle relaxants drugs
Oxybutinin, tolterodine, trospium, darifenacin, solifenacin, fesoterodine
Most effective smooth muscle relaxants
Darifenacin, solifenacin, ER tolterodine –> least likely to cause side effects!
Beta-3 adrenergic receptor agonists MoA
Detrusor muscle relaxation –> works on the storage phase
Beta-3 adrenergic receptor agonist drugs
Myrbetriq, Gemtesa
Which beta-3 adrenergic receptor agonist is preferred and why?
Gemtesa, because it doesn’t have the ADE of HTN
Mybetriq ADEs
Nausea, HA, HTN, diarrhea, constipation, dizziness, sinus tachycardia
Gemtesa ADEs
Nausea, HA, diarrhea, constipation, nasopharyngitis, bronchitis, URI, UTI
Stress incontinence treatments
Alpha-receptor antagonist
Estrogen replacement
Alpha-receptor agonist MoA
Increase intra-urethral pressure
Estrogen replacement MoA
Causes proliferation of urethral mucosa
Alpha-receptor agonist drugs
Pseudoephedrine, midodrine
Pseudoephedrine ADEs
Insomnia, HTN, tremor, palpitations
Estrogen ADEs
Pap/mammogram results get skewed, bleeding, DVT
Overflow incontinence drug
Bethanechol
Bethanechol MoA
Stimulates muscarinic receptors, bladder tone
Bethanechol ADEs
GI cramping/diarrhea/salivation, orthostasis with reflex tachycardia, urgency, bronchial constriction
Medications affecting continence
alpha-agonists/antagonists, alcohol, anticholinergics, cholinesterase inhibitors, CCBs, diuretics, narcotics, ADs, APS, sedative/hypnotics
Nonpharm treatment for incontinence
Behavioral therapies (bladder training, bladder control strategies, pelvic floor muscle training, fluid management)
AUA Guidelines on OAB: 1st line treatment
Nonpharm treatments, behavioral therapy
AUA Guidelines on OAB: 2nd line treatment
PO antimuscarinics or PO beta-3-agonists
Use a combo of these if refractory to monotherapy
Avoid antimuscarinics in…
Narrow-angle glaucoma, extreme caution in decreased gastric emptying or urinary retention