post-prostatectomy incontinence - ubc urology rounds | home
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Post-Prostatectomy
Incontinence
Daniel Rapoport
UBC Urology
Nov 14, 2007
It’s a roller-coaster!
Post Rad P:
Pathology
looks good
The day he
realizes he has
no erections.
Man walks into
your office with
prostate Ca
The day
Viagra works
for him!
The day he
realizes he
hasn’t dried up
Baverstock 2002
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Not Just SUI
• Urge incontinence
• Mixed incontinence
• Overflow
• Climacturia…
• 42 patients, 39 “continent”
• 45% climacturia
– 50% bothered
• Coping mechanisms
– Voiding before intercourse
– Condom
• Due to relaxation of external sphincter during
orgasm
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Incidence & Natural History
Incidence
Urol Clin NA 1991
– Literature varies widely
– Differences in definitions and reporting
– Differences in patients, techniques…
2.5 - 87%
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Definitions
• Subjective
– Physician assessment vs Self-reporting
• Objective
– Any leakage?
– Pad weight?
– Pad number?
Physician Assessment
• 5-10% pad use
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Self-Reporting
• Up to 74% pad use
Contemporary Data
• Likely reflect changes in technique
– Nerve-sparing RRP (Walsh)
– Bladder neck sparing/reconstruction
• Different patient populations??
– Younger
– Localized disease
• Definitions
– < 1 pad per day
– HRQOL questionnaires
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• 500 men consecutive open RRP
• Filled out UCLA-PCI & AUASS at
baseline, 3, 6, 12 and 24 months post-
RRP
• All had localized disease
2004
Lepor and Kaci, J Urol: 2004
18.5%15.9%23.7%37%1 Pad Use
1.5%7.9%12.8%29.1%>2 Pad Use
80%76.2%63.5%33.7%No Pad Use
24 mo12 mo6 mo3 mo
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Natural History
Eastham, Kattan, Rogers J Urol 1996
Lepor and Kaci, J Urol: 2004
18.5%15.9%23.7%37%1 Pad Use
1.5%7.9%12.8%29.1%>2 Pad Use
80%76.2%63.5%33.7%No Pad Use
24 mo12 mo6 mo3 mo
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How much leakage is significant?
• 1 pad? 2 pads/day?
• Aren’t subjective outcomes more
important?
• Intervention for incontinence is usually
based on bother and patient goals
• Is there a difference in HRQOL between
patients who use no pads and 1 pad/day?
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Cooperberg et al, 2003: J Urol
• 168 men consecutive open RRP
• Mailed UCLA-PCI and AUASI
• Mean 75 wks post-op (45-105 wks)
• Compared “no pad” vs “1 pad” goups in
– Functional scores
– Satisfaction/bother scores
• No Pad: n=146; 1 Pad: n=20
• No significant differences in
demographics, pathology, technical data
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p < 0.0001
54%52%1 pad
86%81%No pad
Mean Urinary
Bother Score
Mean Urinary
Function Score
PPI Incidence: Summary
• Depends on definition and how you ask…
• Contemporary data
– Gets better with time
– Around 80% completely dry at 24 months
– < 20% need 1 pad/day
• Some of these will be bothered
– < 2% need 2 or more pads/day
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What about LRP and RALP?
What About *LRP & RALP?• Shalhav, Eur Urol: 2007 (n=300)
– 92% continent at 24 months (< 1 pad/day)
– No mention of bother
• Menon, BJU int: 2003 (n=200)– 50% faster recovery of continence
– Used physician assessment, not clearly defined
• Ahlering, Urology: 2004 (n=60)– 75% continence at 3 months same as RRP group
• *Rassweiller, J Urol: 2001 (n=180)– 97% continence at 1 yr
– No influence of learning curve
• *Guillioneau, J Urol: 2000 (n=120)– 72% continent at 6 months
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What can we do to prevent post-RP
incontinence?
Proposed Risk Factors
• Age
• Stage
• Technique
– Nerve-sparing
– Bladder neck sparing
• Surgeon experience
• Previous TURP
• Previous Radiation
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The Bladder Neck
• Literature review
• Summarized evidence for relationship b/w
technique and continence outcomes
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Cambio & Evans, Eur Urol: 2006
• 11 randomized trials of PFMT
• Over 1000 men
• Earlier recovery of continence in PFMT
• No difference at 6 months
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The Bladder Neck
• Preservation
– Conflicting evidence
– No randomized control trials
– May lower BNC rate
– Appears not to compromise oncologic outcomes
– Patient selection important
• Intussusception
– May improve early return to continence (3 mo)
– Few studies
The Bladder Neck
• Mucosal Eversion
• (Strougi et al BJU int, 2005)
– Randomized trial of 95 men
– No difference in continence or contracture
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Nerve Sparing
• Several series showing better continence
in bilateral vs unilateral vs non-sparing
• Few series showing no relationship
• No correlation between potency and
continence established
• Retrospective review of 52 patients
• Functional outcomes measured with UCLA-PCI
• 54% incontinence (defined at > 1 pad/day)
• 40% required AUS implantation
• More insult to external urinary sphincter…
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• Retrospective review of 753 RRPs
• 36 (4.8%) developed anastamotic stricture
• Stricture patients were 4x more likely to be
incontinent (46.5% vs 12.2%)
Anatomy of Male Continence and
Pathophysiology of Incontinence
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Anatomy of Male Continence
1. Proximal Urethral Sphincter
– BN, prostate, urethra to veru
– Removed by Rad P
2. Distal Urethral Sphincter
– Veru to proximal bulb
1. Urethral mucosal infoldings
2. Rhabdosphincter (s.m. &
skel)
3. Extrinsic skeletal (levators)
4. Supporting fascia
Anatomy of Male Continence
• Rhabdosphincter– Longitudinal s.m.
– Slow twitch (type I) skeletal
– Maintain resting tone and preserve continence
• Striated Skeletal Muscle– Levator ani
– Fast twitch (type II)
– Contract rapidly with ↑Pabdo
• Innervation:– Parasympathetic (pelvic
nerves)
– Somatic (pudendal nerves)
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Pathophysiology
Post-prostatectomy
Incontinence
Bladder Dysfunction Obstruction Sphincter Dysfunction
Post-prostatectomy
Incontinence
Bladder Dysfunction Obstruction Sphincter Dysfunction
– Overactivity
• Detrusor Instability
• Impaired Compliance
– Underactivity
• Impaired contractility
(overflow)
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Post-prostatectomy
Incontinence
Bladder Dysfunction Obstruction Sphincter Dysfunction
B.N. contracture
Post-prostatectomy
Incontinence
Bladder Dysfunction Obstruction Sphincter Dysfunction
– Injury to:
• Rhabdosphincter
• Neural Supply
• Supporting structures
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Evaluation
Evaluation Overview
• History
• Physical Exam
• Ancillary Tests
• Urodynamics
• Cystoscopy
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History
• Type & severity of incontinence
• QOL/Bother
• Other LUTS
• Sexual Function
• Details of Prostate Ca therapy
– XRT
• Past Medical History
– DM, Neurologic disease, Pelvic Surgeries, Medications
History Adjuncts
• UCLA-PCI
• Voiding diary
• 24 hr pad test
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Physical Examination
• Bladder
– r/o distension
• DRE
• Penis
– Assess excoriation, infection
• Neurourologic exam
• Examine the pads
– Type, how wet, last change, underwear stains
Ancillary Testing
• Urine• UA, C&S
• Blood• PSA, +/- Cr
• Non-invasive Urodynamics• PVR
• Uroflow
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Flexible Cystoscopy
• Urethra
– stricture
– Bladder neck contracture
• Bladder
– Stones, FB, tumor
• Fill bladder and perform
stress maneuvres
Urodynamics
• Defines the problem and guides therapy
• Assess bladder and outlet
– Filling: capacity, overactivity, compliance
– Storage: VLPP
– Emptying: contractility, obstruction
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Urodynamics
10%Bladder neck
contracture
60%90%Sphincter
Dysfunction
3%45%Bladder
Dysfunction
Alone (%)Total (%)
Nitti J Urol, 1998
Management Overview
Post-prostatectomy
Incontinence
Behavioural Medication Surgical
Fluid Restriction
Kegel Exercises
Biofeedback
Anticholinergics
Alpha-agonists
Injectables
Male sling
AUS
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Surgery
• Indication:
– Bothersome incontinence
– Due to sphincteric deficiency
– Persisting beyond 1 yr
– Refractory to pelvic floor exercises
Surgery
• Considerations:
– Patient goals/lifestyle
– Severity of incontinence
– Anatomy/radiation
– Bladder (compliance, stability)
– Comorbidites
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Injectables
• Pro
– Easy to perform
– Minimal morbidity
– Doesn’t burn any bridges
• Con
– Expensive, not cost-effective
– Not durable, requires multiple procedures
– Less efficacious
Injection Technique
• Local anesthetic
• Retrograde or antegrade
• Collagen, Macroplastique or Zuidex
• Inject material above sphincter at a few
sites circumferentially
• Goal is co-aptation of the urethral lumen
• Avoid passing scope into bladder or
catheterization
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Injectables
• Complications
– Retention 15 - 25%
– Irritative LUTS
– UTI
– Failure
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• Reviewed 322 men with ISD
– 199 men post RRP
– Others had EBRT, cryo, TURP
• Findings (40 months)
– Mean response 50% pad reduction
– Mean duration of response 6 months
– Mean of 4.5 injection sessions required
– Patients with EBRT did worse
– Good response (dry) tends to last longer (11 mo)
Westney et al. J Urol, 2005
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Injectables Summary
• Ideal candidate
– Mild incontinence
• < 3 pads/day
• VLPP > 60 cm H2O
– No radiation
– Adequate suprasphincteric urethra
– Patient ok with multiple sessions
Male Sling
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Male Slings
• The niche
– Don’t want or can’t use a mechanical device
– Mild incontinence
– Need repeated transurethral instrumentation
• Don’t preclude subsequent AUS
• Options
– Bone-anchored sling (InVance)
– Trans-obturator sling (AdVance)
Technique
• General or spinal anesthesia
• 3-4 cm perineal incision
• Leave bulbocavernosus intact
• Dissect pubic rami
• 2-3 titanium bone anchors
• Adjust sling tension**
• Foley overnight
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Sling tension
• Retrograde LPP
– 14 fr foley (like doing a RUG)
– Raise water until flow starts
– Goal is 60 cm H2O RLPP
• Cough/Valsalva
– Requires spinal anesthesia
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• 48 patients
– 42 post-RP, 2 post-EBRT
• 24-60 month follow-up
• Success: leakage “no problem” or “small
problem” on UCLA-PCI
– 80% cured or much improved
• 1 infection, 1 erosion requiring explant
• 62 men with PPI, InVance sling
• All degrees of incontinence
• 15 month follow-up
• Success: subjective “much” or “very much”
improved
– 58% success
– 10% “a little better”
– 32% failed
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Fischer et al. J Urol, 2007
• Logistic regression analysis to determine
influence of several factors
– Age
– Time from surgery/radiation
– Length of follow-up
– Pre-operative pad weight
– ALPP
• Only pre-operative pad weight predicted success
• Radiation or BNC no effect
Fischer et al. J Urol 2007
• Chance of success 6x greater if pad weight < 423g
(< 150 g considered “mild”)
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Fischer et al. J Urol 2007
• 21% complication rate
– De novo urgency: 1
– Retention: 2
– Obstructive LUTS: 1
– Paresthesia: 5
– Infection: 3
– Erosion: 1
• 14% re-operation
Other Options
• AdVance
– Male TOT
• ProACT
– Adjustable balloons implanted under bladder
neck
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Artificial Sphincter
Artificial Urinary Sphincter
• Introduced by Scott in
1973
• Current model AMS
800 introduced in
1983
– cuff around bulb
– Pump in scrotum
– Reservior retropubic
• “Gold Standard”
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AUS Modifications
• Narrow-back cuff
introduced in 1987
– More even distrubution of
occlusive pressure
– Decreased mechanical
and non-mechanical
failure rates by > 50%
AUS Contraindications
• Inablility to use device (AUS)
• Bladder dysfunction
• Unstable urethral stricture
• Need for repeated trans-urethral surgery
• Infection
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Perineal vs Trans-scrotal
• Trans-scrotal technique described by
Wilson in 2003
• Pro’s
– Place all components through 1 incision
– Good for revision: tandem cuff or distal cuff
– Synchronous placement of a penile prosthesis
• Con’s
– More distal cuff placement
Additional Techniques
• Double cuff (Kowalcyk, J Urol; 1996)
– For severe incontinence
– Higher rate of erosion
• Transcorporal cuff (Webster, J Urol; 2002)
– Protects against erosion and allows for distal
placement
– Good for previous radiation and revisions
– Only perform in impotent men
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• Review of AUS from 1992-2005 (narrow back cuff)
• 218 men
– 60 RRP + EBRT
– 116 RRP
– 11 NGB
– 28 Secondary AUS placement
• Mean 36.5 mo follow-up
– 75% free of revision or removal at 5 yrs
– 69% using < 1 pad/day
– No QOL data
Lai et al. J Urol, 2007
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Summary of AUS Series
Montague & Angermeir. Urology, 2000
AUS Troubleshooting
• Infection
• Erosion
• Failure
– Mechanical
– Non-mechanical (atrophy)
• Urethral Strictures
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Evaluation of AUS Problems
• H&P
– Signs of infection
• X-ray (if contrast in AUS fluid)
• Cystoscopy
– Erosion? Stricture?
• Urodynamics
• Surgical exploration
– For device failure
– Intra-operative electrical testing
Mechanical Failure
• AMS 800: “7-10 yr life expectancy”
• Cuff leak is most common cause
• If device is < 3yrs � Replace component
• If older � Replace entire AUS
• Tie connectors should be used in revisions
– Lose biofilm in retained tubing
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Urethral Atrophy
• Most common reason for revision
• Options
– Downsize cuff (if cuff > 4.0 cm)
– Move cuff proximally
– Tandem cuff
– Transcorporal cuff
Urethral Erosion
• Immediate removal of all components
• Reimplantation 3 months later if:
– No infection
– Urethra patent
• Reimplant at different site
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AUS Infection
• 3% incidence
• Due to seeding of device during
implantation
– S epidermidis or S aureus
– within 6 wks of implantation
• Delayed infection rare
– Usually associated with erosion
• Requires explantation and delayed reimp.
AUS Infection
• Immediate salvage has been reported
– 7 solution antibiotic irrigation protocol
– Only if non-eroded
• Relative contraindications
– Necrotizing infection
– Sepsis
– Ketoacidosis
– Immunosuppression
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Urethral Stricture
• May represent impending erosion
• Transurethral management
– Dilation
– DVIU, laser
– Consider surgical uncoupling of cuff
• Removal of device, urethroplasty and
delayed reimplantation at a remote site
Summary
• PPI continues to occur despite surgical
advances in radical prostatectomy
• May have a profound impact on QoL
• Evaluation should include UDS, endoscopy,
and quantitative/subjective data
• Surgery is mainstay of therapy
• AUS is gold-standard, other options exist for
mild incontinence