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Chapter 30 Long-term Results After Fecal Incontinence Surgery
Table 30.9. Long-term results of dynamic graciloplasty with respect to etiology
Congenital incontinence (anal atresia)
417
Aut hor Year N F mean Follow-up Follow-up Success
Sonnino 1991 7 4 13 53 6–150 4/7 Baeten 1994 9 3 28 >24 4–78 5/9 Baeten et al. 1995 12 4 27 25 3–88 6/12 Geerdes 1996 13 32 4–104 7/13 Rosen 1998 6 19 3–53 6/6 Madoff et al. 1999 18 10 26 24 9/18 Baeten 2000 16 8 32 12 12–12 8/13 Rongen et al. 2003 28 45 15/28 Cumulative 109 60/109
Acquired incontinence (trauma, obstetric)
Aut hor Year N F mean Follow-up Follow-up Success
Williams 1991 20 16 3–38 12/20 Baeten et al. 1995 24 20 48 25 3–88 22/24 Geerdes 1996 34 32 4–104 31/34 Rosen 1998 4 19 3–53 3/4 Madoff et al. 1999 85 62 50 24 60/85 Baeten 2000 107 78 53 12 12–12 45/83 Rongen et al. 2003 98 45 80/98 Cumulative 372 253/348
age (mean) (range)
55%
age (mean) (range)
73%
See text for the definition of “success” and “improvement”.
but it was stated that both technical failures and complication rates were very high in both types of treatment (Ortiz et al. 2003).
Details on the patient populations and the long-term results are given in the Ta­bles 30.10 and 30.11. All studies included a mixture of incontinence etiologies. Long­term results with a median follow-up of 5 years or more are only available for the ABS type AMS 800 (Wong et al. 1996; Christiansen et al. 1999; Parker et al. 2003), a device that is no longer used. These three studies reported a cumulative success rate of 48% (19/39), which was slightly worse than studies reporting results of the ABS Acticon Neosphincter with a shorter mean follow-up of 19–30 months (see Table 30.11, cumu­lative success rate 55%,143/246). There are no long-term results regarding the ABS Ac­ticon Neosphincter beyond 28 months, the success rate with a follow-up around 2 years being about 58%. Study results do not seem to deteriorate in the long run,once the procedure has been completed successfully (Wexner et al. 2002; Rongen et al.
2003), but true long-term studies are not available yet.
418
Tilman T.Zittel
9/42 33/64 42/64
21% 52% 66%
30
Table 30.10. Long-term results of artificial bowel sphincter,type AMS 800 (mean follow-up at least 1 year)
age surgery (mean) (range) continence
Christiansen and Sparso 1992 12 9 Neuropathic 3/12 19 6–34 5/12 10/12
Lehur et al. 1996 13 9 44 Mixed 20 4–60 5/13 9/13 9/13
Wong et al. 1996 12 5 33 Mixed 58 30–76 3/12 9/12 9/12
Christiansen et al. 1999 17 11 46 Neuropathic 6/17 84 60–120 1/17 4/17 8/17
Parker et al. 2003 10 47 Mixed 91 29–143 6/10 6/10
Aut hor Yea r N F Mean Etiology Previous Follow-up Follow-up Full Success Improvement
Cumulative 64
Previous surgery,previous surgery for fecal incontinence.
Follow-up is given in months.
See text for the definition of “success” and “improvement”.
F female.
Chapter 30 Long-term Results After Fecal Incontinence Surgery
51/128 143/246 165/246
40% 58% 67%
419
26 2–39 6/18 6/18
25 7–49 6/16 10/16 11/16
age surgery (mean) (range) continence
2003 37 22 52 mixed 6/37 42 12/37 20/37 20/37
a
Table 30.11. Long-term results of artificial bowel sphincter,type Acticon Neosphincter (mean follow-up at least 1 year)
Parker et al. 2003 35 47 mixed 6–24 21/35 21/35
Aut hor Yea r N F Mean Etiology Previous Follow-up Follow-up Full Success Improvement
Lehur 1998 13 9 40 mixed 30 5–76 8/13 11/13
Lehur 2000 24 17 44 mixed 20 10–35 18/24 18/24
Malouf et al. 2000 18
Altomare 2001 28 28 58 mixed 15/28 19 7–41 14/28 21/28
Ortiz 2002 22 17 47 mixed 17/22 28 6–48 4/22 9/22 14/22
Devesa et al. 2002 53 35 46 mixed 27 7–55 29/53 37/53 43/53
Lehur et al. 2002 16 14 43 mixed
Michot
Cumulative 246
Previous surgery,previous surgery for fecal incontinence.
Follow-up is given in months.
See text for the definition of “success” and “improvement”.
F female.
Some patients with type AMS 800 included.
30
420
Tilman T.Zittel
30.11 Sacral Nerve Stimulation
Sacral nerve stimulation, first used by urologists to treat urinary incontinence,was in­troduced by Matzel et al. to treat fecal incontinence (Matzel et al. 1995). Sacral nerve stimulation may be tested in incontinent patients with a morphologically intact anal sphincter.In a prone position,sheathed needles are inserted into the sacral foramen of S2, S3 and S4, and current is applied. The most efficient sacral nerve to stimulate the anal sphincter,most often S3,is chosen for short-term chronic stimulation with an im­pulse generator. If percutaneous nerve stimulation for 6–10 days improves inconti­nence significantly and symptoms relapse upon ceasing temporary stimulation,a per­manent impulse generator is implanted subcutaneously in the lower abdominal wall or below the superficial fascia in the buttock.
The morbidity of this approach seems to be low, but technical problems such as electrode migration occur and device removal due to intractable pain has been de­scribed (Ganio et al. 2001; Leroi et al.2001; Matzel et al.2001). In patients with fecal and urinary incontinence, both can be improved by sacral nerve stimulation (Ganio et al. 2001; Leroi et al.2001).
Details on the patient populations and the long-term results are given in Ta­ble 30.12. There is a limited number of studies, with no study describing more than 16 patients, and most studies including a mixture of incontinence etiologies. Since there is a test phase, which prohibits the permanent implantation of the impulse generator in nonresponding patients,there is a high success rate,with almost all patients receiv­ing a permanent stimulator having a significant improvement of fecal incontinence. The longest mean follow-up is around 3 years, and these studies reported a significant improvement of fecal incontinence in 23 of 26 patients (88% [Matzel et al. 2001,2003; Kenefick et al.2002a]). There seems to be no deterioration of the initial improvement of sphincter function up to 99 months after the implantation of the impulse generator (Matzel et al.2003).
30.12 Quality of Life
Today,it is generally accepted that measuring the quality of life and taking the patient’s perspective into account are indispensable for judging the outcome of surgical treat­ments. However, adequate tools to measure quality of life have been developed in re­cent years only, and it has become evident that unspecific quality-of-life measures do not adequately reflect the influence of specific diseases on the quality of life. Therefore, disease-specific quality-of-life measures had to be validated. For fecal incontinence, Rockwood developed a Fecal Incontinence Severity Index (FISI [Rockwood et al. 1999]) and a Fecal Incontinence Quality of Life Scale (FIQL [Rockwood et al. 2000]), which have both been endorsed by the American Society of Colon and Rectal Surgeons (ASCRS).
come available only recently; accordingly, there are no quality-of-life data available re­garding treatment outcomes after pelvic floor repairs. Limited data on quality of life are available after anterior sphincteroplasty, which has been shown to improve the FISI. Patient-rated and surgeon-rated FISI scores were identical and correlated with the FIQL (Halverson and Hull 2002), and the degree of fecal incontinence correlated negatively with the FIQL. Interestingly, incontinence to gas only did not decrease the
Chapter 30 Long-term Results After Fecal Incontinence Surgery
16/16 16/16
22/31 70/83 80/83
71% 84% 96%
421
19 5–37 5/5 5/5
age surgery (mean) (range) continence
32 6–60 4/4 4/4
Table 30.12. Long-term results of permanent sacral nerve stimulation (mean follow-up at least 1 year)
Malouf et al. 2000 5 5 59 mixed 1/5 16 3–26 4/5 5/5
Ganio et al. 2001 5 4 62
Ganio et al. 2001 16 12 51 mixed 6/16 16 3–45 12/16 16/16
Matzel et al. 2001 6 5 50 mixed 5/6 37 5–66 3/6 5/6
Aut hor Year N F Mean Etiology Previous Follow-up Follow-up Full Success Improvement
Rosen et al. 2001 16 50 neurologic 11 2/16 15 3–26
Kenefick et al. 2002 15 14 60 mixed 7/15 24 3–60 11/15 14/15 15/15
Kenefick et al. 2002 4 4 61 scleroderma 4
Matzel et al. 2003 16 14 54 mixed 8/16 33 3–99 11/16 12/16 14/16
Cumulative 83
Previous surgery,previous surgery for fecal incontinence.
Follow-up is given in months.
See text for the definition of “success” and “improvement”.
F female.
30
422
Tilman T.Zittel
quality of life compared to patients who were fully continent (Gutierrez et al. 2004). It is also remarkable that although the rate of continent patients who underwent anteri­or sphincteroplasty a median of 10 years before decreased over time, only 6% of those being fully continent at 10 years,74% of patients remained satisfied with the results of the procedure (Gutierrez et al. 2004),supporting the importance of the patient’s view of surgery.
Dynamic graciloplasty has been shown to improve the quality of life significantly. The State-Trait Anxiety Inventory questionnaire and the Nottingham Health Profile, although not disease-specific, both improved 1 year after a successful dynamic gracil­oplasty, with good correlation between the clinical results scored by the physician and the patient (Baeten et al.1995; Adang et al.1998). In a prospective multicenter trial,the SF-36 was improved in three of eight categories,and the Fecal Incontinence Type Spec­ification in all ten categories,and the patients’ self-rating of bowel control significant­ly improved after 1 year (Baeten 2000; Wexner et al. 2002). Of the SF-36, the category “social functioning” correlated with continence (Wexner et al.2002).
There are six reports describing an improved quality of life after the implantation of an artificial bowel sphincter (ABS). In general, treatment-related quality-of-life changes only refer to patients with a successful ABS implantation.Vaizey et al.investi­gated six women preoperatively and 3 months after an ABS implantation by the SF-36, and found a significant improvement in two out of eight subscales (role emotional and social function) (Vaizey et al. 1998). O’Brien et al. used a quality-of-life questionnaire with 39 questions specifically constructed for patients with anal incontinence by American Medical Systems (Vaizey et al. 1999).In ten patients with a successfully im­planted device, the score significantly improved after device activation (O’Brien and Skinner 2000). Sixteen patients were studied with the FIQL 6–12 months after ABS im­plantation,and the quality of life largely improved in all four domains explored (Lehur et al. 2002). Devesa et al. retrospectively assessed 25 patients with the FIQL and ob­served significant improvements in all four domains as well.In addition, the postoper­ative increase of the anal resting pressure correlated with the coping/behavior sub­scale (Devesa et al. 2002). In a multicenter study, 59 patients completed the FIQL 12 months after device activation. A variety of incontinence symptoms impairing the quality of life were improved postoperatively, but the scores of the four domains were not given. In 44 patients, the health status questionnaire (HSQ) was completed 12 months after activation, and the HSQ significantly improved (Wong et al. 2002). Finally, Parker et al. reported a significantly improved FIQL 12 months after device activation in all four domains in 14 patients.However,of 35 devices implanted success­fully in this study,only 17 were functional at 12 months,of which 14 were evaluated re­garding quality of life (Parker et al. 2003). No quality-of-life data were reported for those patients who had a failed ABS implantation in this study as well as in all the oth­er studies cited, indicating that only patients with successful device implantation were evaluated,which reflects a selection bias. Formally, quality-of-life data should be eval­uated on an intention-to-treat basis,and these data are not available yet.
Limited data on quality of life are available after sacral nerve stimulation (SNS).Ro­sen et al. reported a significant improvement in all four domains of the FIQL in 12 pa­tients 6 months after permanent implantation (Rosen et al. 2001). Matzel et al. found an improvement of borderline significance in all four domains of the FIQL a median of 18 months after device activation in four patients (Matzel et al.2003). In five patients with permanent SNS and a median follow-up of 16 months, all patients showed an overall improvement of the SF-36, but no statistical analysis was provided (Malouf et al. 2000). In four patients with multiple sclerosis, the different subscales of the SF-36
Chapter 30 Long-term Results After Fecal Incontinence Surgery
showed a variable improvement, physical and social function being the most consis­tent. However, no actual data with statistical analysis were provided (Kenefick et al.
2002). In 14 patients with a median follow-up of 24 months, two domains of the SF-36 (role physical and social function) were significantly improved (Kenefick et al.2002). Taken together, the available quality-of-life data stem from a very limited number of patients.As reported for the artificial bowel sphincter,no quality-of-life data were re­ported for those patients that had a failed SNS implantation,again reflecting selection bias.Although the study results are promising, further data collected on an intention­to-treat basis are needed.
30.13 Conclusion
The armamentarium of surgical procedures to treat fecal incontinence has increased over the past decades. The interest in pelvic floor repairs seems to be fading, as the functional results remain unsatisfactory. There are a few continuing publications on anterior sphincteroplasty, and although the repaired sphincter and the functional re­sults seem to deteriorate in the long term, it has to be kept in mind that around 75% of patients were still satisfied with the result of the procedure after a median follow-up of 10 years (Gutierrez et al. 2004). Considering the low morbidity of the procedure,ante­rior sphincteroplasty remains an option in patients with an isolated sphincter defect.
Dynamic graciloplasty and the artificial bowel sphincter are complex and expen­sive procedures with a high morbidity and failure rate. Therefore, they should be re­served for carefully selected patients, and patients should be referred to specialized centers.Both remain treatment options for younger, motivated patients with severe fe­cal incontinence. Sacral nerve stimulation might be the most thrilling advance in re­cent years, originally used for patients with severe fecal incontinence and no detect­able anatomical sphincter defect,but now also being successfully tried in patients with an anatomical sphincter defect or after an unsuccessful sphincter repair.The morbid­ity of the procedure is low, and the test phase of sacral nerve stimulation is a big ad­vantage, as patients improving their continence during test stimulation have a more than 90% chance of improving their continence with permanent stimulation. Follow­up of successful sacral nerve stimulation is available for up to 10 years now, with no de­crease in efficacy surfacing thus far (Matzel et al.2003). The stimulating device is ex­pensive, currently prohibiting its use on a large scale. However, as physicians’and the society’s awareness of the detrimental effects of fecal incontinence rises,and consider­ing that cardiac pacing or cardiac defibrillators are now standard care in selected pa­tients, its costs may no longer be allowed as an argument to deny this treatment to a patient in need, and the situation might change in the future, allowing more patients to receive a costly treatment on the one hand,but dramatically increasing their quality of life on the other.
Finally,there is a need for surgeons specializing in fecal incontinence treatment to be able to offer the surgical treatment options named above. With aging societies, in­creasing awareness of incontinence problems and better-informed patients, the num­ber of patients that seek treatment for fecal incontinence will rise. This chapter might serve as an overview to give these patients a realistic judgment of the long-term result that can be expected after surgical treatment for fecal incontinence.
423
30
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