Urology Flashcards
What are the 5 types of incontinence?
- stress
- urge
- overflow
- functional
- mixed
What is the most common type of incontinence in ppl >75yo?
urge
S/Sx of urge incontinence? (3)
- frequency
- urgency
- nocturia
Common etiologies of urge incontinence? (3)
- usually idiopathic
- overactive bladder
- detruser hyperactivity w/impaired bladder contractility (DHIC)
Nb. can also be d/t cystitis, tumor, stones, PD, dementia
Tx for urge incontinence (4)
- Timed voiding
- dietary manipulations to avoid irritants, weight loss
- kegels
- Meds: anticholinergics
What causes stress incontinence? (2)
- leakage d/t lack of pelvic supports
- intrinsic sphincter deficiency
Describe how lack of pelvic supports leads to stress incontinenc). What would usually cause this?
- usually hypermobility of the bladder neck (85%)
- 2/2 aging, hormonal changes, multiple vaginal births, pelvic surgery
What would cause intrinsic sphincter deficiency (stress incontinence)?
pelvic radiation, trauma, surgery
Tx for stress incontinence? (4)
- pelvic floor exercises
- Meds: alpha agonists, imipramine
- quit smoking
- surgery - bladder sling for support
What is the cause of overflow incontinence?
- detrusor underactivity
- bladder outlet obstruction
- Elevated PRV
What could cause detrusor under activity (overflow incontinence)? (5)
DM, MS, lumbar stenosis, spinal cord injury, meds (anticholinergics)
What would cause bladder outlet obstruction (overflow incontinence)? (3)
ureteral stricture, BPH, cystocele
What are the s/sx of overflow incontinence
small but continuous urine leak
Tx for overflow incontinence (2)
TURP, or intermittent catheterization
functional incontinence doesn’t involve _____
the lower urinary tract
functional incontinence results from _______
cognitive or functional impairments
Mixed incontinence (stress and urge) is most common in what population?
- older women (65% w/stress incontinence have urgency)
Tx of mixed incontinence
imipramine (anticholinergic and alpha agonist)
What are the 3 P’s you should assess for in the history of someone with incontinence? What should you also inquire about or suggest?
- Position of leakage (standing, sitting, supine)
- Protection (pads per day, wetness of pads)
- problem (quality of life)
- voiding diary
What are the different modalities you can use to diagnose incontinence? (4)
- UA
- PRV
- pad weight
- urodynamics
What other meds can be used to treat incontinence in addition to the aforementioned meds, lifestyle modifications, exercises, and bladder training?
- alpha adrenergic stimulators
- oral estrogen
- cymbalta (duloxetine) - increases urethral sphincter contraction
When do you screen for prostate cancer?
- high risk groups/AAs: 45 yrs
- Others: 50 yrs
- stop at 75 or <10 yr survival
RFs for prostate cancer (5)
- AA>white>Asians
- FMH
- Diet
- age
- environmental exposure
How do you determine someone’s gleason score?
- first # = majority of the tissue
- second # = 2nd most common
(4+3 is worse than 3+4)
What gleason score is the cut off for high grade?
> 6
PSA
- a serine protease from the prostate that breaks down products in semen
ULN for PSA
4
PSA is used mostly for _____
disease RECURRENCE more than screening
What things can elevate PSA? (8)
- ejaculation
- infection
- cancer
- instrumentation
- inflammation
- prostatitis
- BPH
- irritation
What does PSA free:bound ratio tell us
decreased free:increased bound means a greater cancer risk
what is PSA velocity? How do we measure it? What is this used for?
- the change in one’s PSA values over time
- 3 measurements over 2 years is best
- PSA 4 - threshold is 0.75 ml/yr increase
What is PSA density?
- density of PSA/total prostate fluid volume
What is the threshold for PSA density at which you’d biopsy?
> 0.15
What is the MOST COMMON cause of PSA elevation?
- aging!!! consider BPH in older men
Where in the prostate does PCa occur?
peripherally
Why is PCa often asx?
Since it usually occurs in the periphery of the prostate it doesn’t cause obstructive sx until later
If someone is newly dx’ed with PCa what should you look for?
BONE METS
When is watchful waiting indicated in PCa pts? (2) How does watchful waiting work?
- when they have <10 yr predicted survival
- low grade, low volume dz
- follow dz with 6 mos. PSA screening and biopsy if indicated
2 important outcomes after radical prostatectomy?
- nerve sparing for erections
- incontinence a major problem
AEs a/w Ext beam radiation tx for PCa? (2)
- 40% ED
- radiation proctitis(?)
AE a/w cryosurgery? How does the use of this compare with ext beam XRT in the setting of PCa?
- 50-60% incontinence rate
- used more after XRT failure
What hormonal drugs are used to treat PCa? (3)
- Leuprolide - GHRH agonist
- Flutamide - testosterone antagonist
- Ketoconazole - adrenal gland test blocker
SEs a/w hormonal tx for PCa? (6)
- decreased libido
- hot flaslhes
- impotence
- increased body fat
- loss of muscle
- loss of bone
When is hormonal tx used for PCa? Why?
- in setting of metastatic dz to control growth bc tumor will eventually become hormonally resistant
Prevalence of BPH
50% @ 50; 80% @ 80
How does BPH present?
LUTS (lower UT sx)
- obstruction
- irritation
- urethral stricture/bladder outlet obstruction
What are obstructive BPH sx? (5)
- weak stream
- hesitancy
- straining
- nocturia
- incomplete emptying
What are irritative BPH sx? (3)
- urgency
- frequency
- dysuria
What are the different types of bladder ca?
- TCC (90%)
- Squamous
- Adeno
How does BCa present?
- painless, gross hematuria
What is the diagnostic work up for BCa? (3)
- cytology (specific but not sensitive)
- cystoscopy
- TURBT
How does staging work for BCa?
Ta-T1: no muscle invasion
T2-T4: muscle invaded
Tx of BCa (localized and invasive respectively)
- localized: TURBT, then surveillance + intravescle immuno/chemotherapy
- invasive: radical cystectomy +/- chemo
What causes BPH?
- androgens effect on periurethral (transitional) zone which constricts the urethra
What are the steps for a diagnostic workup of BPH? (6)
- UA - r/o infection
- Cr - check renal fxn
- DRE - for masses
- PSA
- PVR
- Question survey for sx severity
Medical tx for BPH and their fxns? (3)
- finasteride (5-alpha reductase inhibitor) - shrinks prostate
- Terazosin/doxazosin/tamsulosin/alfuzosin - alpha adrenergic blockers (latter 2 are specific)
- Combination of the 2 - most effective
What are the SEs of alpha blockers for BPH? (4)
- orthostasis
- impotence
- decreased libido
- retrograde ejaculation
What are the SEs of 5-alpha R inhibitors for BPH? (3)
- impotence
- decreased libido
- decreased semen ejaculatory volume
What is a drawback to using medications for BPH vs. surgery?
- 30-40% d/c tx w/in 12 mos. d/t unwanted SEs
Indications for surgery in setting of BPH? (5)
- urinary retention
- recurrent UTI
- persistent hematuria
- bladder stones
- renal insufficiency
What’s the gold standard procedure for prostate removal d/t BPH? What does it accomplish?
- TURP
- removes just the transitional zone of the prostate
When would you do an open prostatectomy? (2)
- When the prostate is >100 g
- bladder stones
Which group most commonly has kidney stones?
white males who have previously had a stone (50% chance of recurrence at 10 yr post-stone)
How many kidney stones pass on their own? In what length of time?
80%
4 wks
80% of stones are < ____mm
4 mm
What are the indications for treatment of a kidney stone?
- > 5 mm
- persistent pain/bleeding
- chronic infection
- partial/complete obstruction
- causing parenchymal damage
- intractable N/V
- patient preference
Most kidney stones are _____ which form from ____ _____ _____
calcium oxalate
Randall’s plaque nidus
Causes of ca oxalate stones (4)
- idiopathic hypercalciuria
- primary hyperparathyroidism
- cancer
- sarcoidosis
Tx for pts w/ca oxalate/phosphate (4)
- thiazides
- hydration
- protein restriction
- Na restriction
Describe struvite stones
form in the calyces of the renal pelvis = stag horn calculi; 2/2 urease producing bugs that alkalinize the urine