Anders Mellgren

University of Illinois at Chicago, Chicago, Illinois, United States

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Publications (106)372.06 Total impact

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    ABSTRACT: Rectal prolapse occurs primarily in older patients who often have significant comorbidities. With the aging population, increasing numbers of elderly patients are presenting with rectal prolapse. The perineal approach is preferred for these patients because it involves less perioperative risk than an abdominal procedure, but the outcomes of this procedure in elderly patients are unknown.
    Diseases of the Colon & Rectum 11/2014; 57(11):1298-1303. · 3.20 Impact Factor
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    ABSTRACT: Fistula between an ileal pouch and the vagina, anus, or perineum is an uncommon complication of ileal pouch-anal anastomosis and is a cause of considerable morbidity. Its optimal management has not been determined because of its low incidence. The aim of this study was to review the outcomes of patients who presented with symptomatic ileal pouch-associated fistulas after restorative proctocolectomy (RPC) and to present a diagnostic and treatment algorithm.
    Techniques in Coloproctology 07/2014; · 1.54 Impact Factor
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    ABSTRACT: Background Injectable bulking treatment for fecal incontinence (FI) is intended to expand tissue in the anal canal and prevent fecal leakage. Use of injectable bulking agents is increasing because it can be performed in an outpatient setting and with low risk for morbidity. This study evaluated the long-term (36-month) clinical effectiveness and safety of injection of non-animal stabilized hyaluronic acid/dextranomer (NASHA Dx) on FI symptoms.Methods In a prospective multicenter trial, 136 patients with FI received the NASHA Dx bulking agent. Treatment success defined as a reduction in number of FI episodes by 50% or more compared with baseline (Responder50). Change from baseline in Cleveland Clinic Florida Fecal Incontinence Score (CCFIS) and Fecal Incontinence Quality of Life Scale (FIQL), and adverse events were also evaluated.Key ResultsSuccessful decrease in symptoms was achieved in 52% of patients at 6 months and this was sustained at 12 months (57%) and 36 months (52%). Mean CCFIS decreased from 14 at baseline to 11 at 36 months (p < 0.001). Quality-of-life scores for all four domains improved significantly between baseline and 36 months of follow-up. Severe adverse events were rare and most adverse events were transient and pertained to minor bleeding and pain or discomfort.Conclusions & InferencesSubmucosal injection of NASHA Dx provided a significant improvement of FI symptoms in a majority of patients and this effect was stable during the course of the follow-up and maintained for 3 years.
    Neurogastroenterology and Motility 05/2014; · 2.94 Impact Factor
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    ABSTRACT: Transanal endoscopic microsurgery has gained increasing popularity as a treatment alternative for early stage rectal neoplasms. With continued advances in technique and experience, more proximal rectal tumors are being surgically managed by using transanal endoscopic microsurgery with an intraperitoneal anastomosis. The purpose of this study was to review the outcomes of patients who have undergone intraperitoneal anastomosis with the use of the transanal endoscopic microsurgery technique. A prospective, single-surgeon database documented 445 consecutive patients undergoing transanal endoscopic microsurgery from October 1, 1996 through January 1, 2012. We retrospectively reviewed information from all patients who underwent transanal endoscopic microsurgery with an intraperitoneal anastomosis in this prospective database. All procedures took place in an inpatient hospital setting. All patients satisfied workup criteria to undergo surgery for rectal neoplasm. All patients underwent transanal endoscopic microsurgery for rectal neoplasm. Size and pathology of lesion, length of procedure, hospital stay, estimated blood loss, margin status, and complications were the outcomes measured. Twenty-eight patients who underwent transanal endoscopic microsurgery had definitively documented intraperitoneal entry and anastomosis. Median follow-up was 12 months (range, 0.5-111 months). There were no operative mortalities. Procedure-related complications included urinary retention (11%), fever (11%), and fecal seepage (4%). Four patients (14%) had positive margins on final pathology. One patient (3%) required abdominal exploration for an anastomotic leak but did not require diversion. Although this study analyzes prospectively collected data, it is nonetheless a retrospective analysis that can introduce bias. Because this is a single-center study with a relatively homogenous population, the results may not be generalizable. Our sample size may also be underpowered to detect clinically significant outcomes. Transanal endoscopic microsurgery with intraperitoneal anastomosis can be safely performed without fecal diversion by experienced surgeons.
    Diseases of the Colon & Rectum 04/2014; 57(4):438-441. · 3.20 Impact Factor
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    ABSTRACT: The TOPAS AMS pelvic floor repair system is a self-fixating polypropylene mesh intended for use to reinforce soft tissues where weakness exists in the gynecological and gastroenterological anatomy. It is not available commercially in any country. This was a preliminary study conducted to obtain initial clinical experience with the TOPAS system for the treatment of fecal incontinence (FI) in women. This was a prospective study conducted at 5 centers in the United States. Women with FI who failed 1 or more conservative therapies were candidates for the study. Fecal incontinence was assessed with a bowel diary, Cleveland Clinic incontinence scores (CCISs), and Fecal Incontinence Quality of Life (FIQOL) questionnaires, and patients were followed prospectively up to 24 months. Treatment success was defined as a reduction in number of FI episodes of 50% or more compared with baseline. A total of 29 women (mean age, 60.6 years) were implanted with the TOPAS system. Mean number of FI episodes per 14 days decreased from 6.9 at baseline to 3.5 at 24 months of follow-up, and the reduction was significant for the entire follow-up period compared with baseline (P < 0.001). A total of 55.6% of the subjects reported treatment success. The CCIS and FIQOL scores for all domains were significantly improved during the overall follow-up period compared with baseline (P < 0.001). The most common procedure and/or device-related adverse events were de novo urinary incontinence, including bladder spasms (n = 6), worsening FI (n = 2), and constipation (n = 2). No device-related erosions or extrusions were reported. Initial experience of the TOPAS system demonstrated a significant improvement in FI episodes, CCIS and FIQOL scores, and a benign safety profile. These results indicate that the TOPAS system has potential as a new therapeutic option for FI, but it needs to be confirmed in a larger study.
    Female pelvic medicine & reconstructive surgery. 01/2014; 20(3):155-62.
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    ABSTRACT: Sacrocolpopexy with rectopexy is advocated for combined rectal and vaginal prolapse, but limited outcome data have been reported. The purpose of this study was to evaluate the indications and outcomes of sacrocolpopexy and rectopexy by comparing pre- and postoperative function and quality of life. A retrospective review of prospectively collected data was performed of all patients undergoing sacrocolpopexy and rectopexy at our institution from 2004 to 2011. Preoperatively, all patients underwent physiology testing and completed 4 validated questionnaires assessing bowel symptom severity and associated quality of life. Patients completed the same questionnaires in 2012. A total of 110 women (median age, 55 years; range, 28-88) underwent a sacrocolpopexy and rectopexy, 33 with concomitant hysterectomy. All patients had rectal prolapse (n = 96) or rectal intussusception (n = 14), and each also had either enterocele (n = 86) or vaginal prolapse (n = 48). Rectal prolapse with enterocele was the most common presentation (n = 75). Previous surgery included rectal prolapse repair (21%) and hysterectomy (57%). Complications included presacral bleeding (n = 2), ureteral injury (n = 2), wound infection (n = 8), and pulmonary embolism (n = 2). There were no mortalities. Fifty-two patients completed the follow-up questionnaires, with a median follow-up of 29 (range, 4-90) months, and preoperative surveys were available in 30 of these patients. Preoperatively, 93% reported constipation; 82% reported resolution or improvement postoperatively. Constipation severity, measured with the Patient Assessment of Constipation Symptom Questionnaire, demonstrated improvement (1.86-1.17; p < 0.001). Fecal incontinence severity scores (Fecal Incontinence Severity Index) improved (39-24; p < 0.01), and 82% of incontinent patients reported cure or improvement. Quality-of-life scores also improved significantly. No patient developed recurrent rectal prolapse. This was a retrospective review, and the response rate to questionnaires was limited. Sacrocolpopexy and rectopexy for combined middle and posterior compartment prolapse is a safe procedure, with low risk for recurrence, and improves bowel function and quality of life in most patients.
    Diseases of the Colon & Rectum 12/2013; 56(12):1415-22. · 3.20 Impact Factor
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    ABSTRACT: : Preoperative chemoradiation therapy in patients with rectal cancer results in pathologic complete response in approximately 10% to 30% of patients. Accurate predictive factors for obtaining pathologic complete response would likely influence the selection of patients best treated by chemoradiation therapy as the primary treatment without radical surgery. : The aim of this study was to evaluate the impact of tumor size, stage, location, circumferential extent, patient characteristics, and pretreatment CEA levels on the development of pathologic complete response after chemoradiation therapy. : This study is a retrospective review. : Five hundred thirty patients treated with preoperative chemoradiation therapy and radical surgery for rectal adenocarcinoma between 1998 and 2011 were identified. A total of 469 patients remained after excluding patients with a history of pelvic radiation (n = 2), previous transanal endoscopic microsurgery or polypectomy of the primary lesion (n = 15), concurrent malignant tumor (n = 14), and no information about pre- or posttreatment T stage in the chart (n = 30). Preoperative CEA levels were available for 267 patients (57%). : Preoperative chemoradiation therapy and total mesorectal excision were performed in patients with rectal cancer. : The primary outcome measured was pathologic complete response. : Ninety-six patients (20%) were found to have a pathologic complete response in the operative specimen. Low pretreatment CEA (3.4 vs 9.6 ng/mL; p = 0.008) and smaller mean tumor size (4.2 vs 4.7 cm; p = 0.02) were significantly associated with pathologic complete response. Low CEA levels and interruption in chemoradiation therapy were significant predictors of pathologic complete response in the multivariate analysis. When stratifying for smoking status, low CEA level was significantly associated with pathologic complete response only in the group of nonsmokers (p = 0.02). : This study was limited by its retrospective design, missing CEA values, and lack of tumor regression grade assessment. : We demonstrated an association between low pretreatment CEA levels, interruption in chemoradiation therapy, and pathologic complete response in patients treated with neoadjuvant chemoradiation therapy for locally advanced rectal cancer. The predictive value of CEA in smokers can be limited, and further studies are needed to evaluate the impact of smoking on the predictive value of CEA levels for pathologic complete response in rectal cancer.
    Diseases of the Colon & Rectum 07/2013; 56(7):859-68. · 3.20 Impact Factor
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    ABSTRACT: BACKGROUND:: Limited data have been published regarding the long-term results of sacral nerve stimulation, or sacral neuromodulation, for severe fecal incontinence. OBJECTIVES:: The aim was to assess the outcome of sacral nerve stimulation with the use of precise tools and data collection, focusing on the long-term durability of the therapy. Five-year data were analyzed. DESIGN:: Patients entered in a multicenter, prospective study for fecal incontinence were followed at 3, 6, and 12 months and annually after device implantation. PATIENTS:: Patients with chronic fecal incontinence in whom conservative treatments had failed or who were not candidates for more conservative treatments were selected. INTERVENTIONS:: Patients with ≥50% improvement over baseline in fecal incontinence episodes per week during a 14-day test stimulation period received sacral nerve stimulation therapy. MAIN OUTCOME MEASURES:: Patients were assessed with a 14-day bowel diary and Fecal Incontinence Quality of Life and Fecal Incontinence Severity Index questionnaires. Therapeutic success was defined as ≥50% improvement over baseline in fecal incontinence episodes per week. All adverse events were collected. RESULTS:: A total of 120 patients (110 women; mean age, 60.5 years) underwent implantation. Seventy-six of these patients (63%) were followed a minimum of 5 years (maximum, longer than 8 years) and are the basis for this report. Fecal incontinence episodes per week decreased from a mean of 9.1 at baseline to 1.7 at 5 years, with 89% (n = 64/72) having ≥50% improvement (p < 0.0001) and 36% (n = 26/72) having complete continence. Fecal Incontinence Quality of Life scores also significantly improved for all 4 scales between baseline and 5 years (n = 70; p < 0.0001). Twenty-seven of the 76 (35.5%) patients required a device revision, replacement, or explant. CONCLUSIONS:: The therapeutic effect and improved quality of life for fecal incontinence is maintained 5 years after sacral nerve stimulation implantation and beyond. Device revision, replacement, or explant rate was acceptable, but future efforts should be aimed at improvement.
    Diseases of the Colon & Rectum 02/2013; 56(2):234-245. · 3.20 Impact Factor
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    ABSTRACT: : The ligation of the intersphincteric fistula tract procedure has been reported to have high cure rates, with minimal impairment of continence. : The aim of this study was to evaluate the success rates and functional outcome after the ligation of the intersphincteric fistula tract procedure. : This study was performed as a retrospective review. : The study was conducted at the Division of Colon and Rectal Surgery, University of Minnesota and at affiliated hospitals in Minneapolis and St. Paul, Minnesota, between March 2007 and September 2011. : Ninety-three patients with transsphincteric cryptoglandular anal fistula were included. : Ligation of the intersphincteric fistula tract procedure was performed. : Failure was defined as persistent or recurrent drainage, air leakage from a patent external opening, or intersphincteric incision or reoperation for recurrent fistula. Success was defined as healing of the external fistula opening and intersphincteric incision. Patients were followed up with a questionnaire to assess the recurrence rate and the Wexner incontinence score. : The median follow-up time for was 19 months (range, 4-55). Thirty patients (32%) had a history of previous surgery for their fistula. The success rate of fistula healing was 40% after the first ligation of the intersphincteric fistula tract procedure. When including patients with repeat ligation of the intersphincteric fistula tract and subsequent intersphincteric fistulotomy after ligation of the intersphincteric fistula tract repair, the success rates were 47% and 57%. Patients with successful fistula closure reported a mean Cleveland Clinic Florida Fecal Incontinence score of 1.0 (SD 2.3). No predictor for successful fistula closure was found. : Retrospective design, limited accuracy of diagnosing fistula failure, and lack of baseline continence were limitations of this study. : The present study indicates that the ligation of the intersphincteric fistula tract procedure for transsphincteric fistulas has a significant risk for failure but good functional outcome in patients with no recurrence.
    Diseases of the Colon & Rectum 11/2012; 55(11):1173-8. · 3.20 Impact Factor
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    ABSTRACT: The aim of the present analysis was to report on the relationship between long-term improvement in quality of life (QOL) and fecal incontinence (FI) severity and long-term reduction in FI episodes after sacral nerve stimulation (SNS) or sacral neuromodulation. Patients who met inclusion/exclusion criteria, and initially had more than 2 FI episodes per week, were offered SNS therapy. Patients with 50% or higher reduction in FI during a 2-week test period were implanted with a neurostimulator (InterStim; Medtronic, Minneapolis, Minn). Assessments were completed by patients at baseline and at 3, 6, and 12 months after implant, and annually thereafter. The present report includes data from the 4-year postimplant follow-up. A total of 133 patients underwent test stimulation with a 90% success rate, and as a result, 120 (110 females) with a mean age of 60.5 years and a mean duration of FI of 6.8 years received long-term implantation. Of them, 78 patients completed all or part of the 4-year follow-up assessment. Fecal incontinence episodes decreased from a mean of 9.4 per week at baseline to 1.9 per week at 48 months (P < 0.001). The 4-year analyses showed that SNS had a positive and sustained impact on all 4 scales of the Fecal Incontinence Quality of Life questionnaire (P < 0.001), Fecal Incontinence Severity Index scores improved from a mean of 39.9 to 28 (P < 0.001), and self-rated bowel health scores improved from a mean of 3.5 to 6.9 (P < 0.001). Sacral nerve stimulation not only restores or improves continence in treated patients with chronic FI but also improves their quality of life and symptom severity.
    Journal of Pelvic Medicine and Surgery 01/2012; 18(2):103-12.
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    ABSTRACT: The aim of this was to define 30-day outcomes of patients treated with colectomy and en bloc pancreatectomy for invasive colon cancer. ACS NSQIP was used to identify patients who underwent colectomy and pancreatectomy concomitantly (n = 65) for colon carcinoma. Patients with en bloc pancreatectomy were compared to a propensity score-matched control group for 30-day outcomes. Sixteen patients underwent a pancreaticoduodenectomy with colectomy and 49 patients underwent a distal pancreatectomy with colectomy. There were 195 matched control patients. En bloc pancreatectomy (Whipple vs. distal pancreatectomy vs. control) patients had longer OR times (390 vs. 265 vs.137 min) and length of postoperative stay (12 vs. 10 vs. 6 days). The frequency of pulmonary complications (31.3% vs. 36.7% vs. 3.6%), blood transfusions (2.9 vs. 1.7 vs. 0.3 U), wound dehiscence, (18.8% vs. 6.12% vs.0.5%) and surgical site infection (43.5% vs. 34.7% vs.14.9%) were substantially higher in the pancreatectomy group (p < 0.05). There were no statistically significant differences in 30-day mortality between the pancreatectomy group and the control group (6.3% vs. 0% vs. 1.5% p = 0.25) Perioperative outcomes with en bloc pancreatectomy and colectomy include increased pulmonary complications, blood transfusions, wound complications, and length of stay compared to patients treated with colectomy alone for colon cancer.
    Journal of Gastrointestinal Surgery 09/2011; 16(3):581-6. · 2.36 Impact Factor
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    ABSTRACT: Sacral nerve stimulation is effective in the treatment of urinary incontinence and is currently under Food and Drug Administration review in the United States for fecal incontinence. Previous reports have focused primarily on short-term results of sacral nerve stimulation for fecal incontinence. The present study reports the long-term effectiveness and safety of sacral nerve stimulation for fecal incontinence in a large prospective multicenter study. Patients with fecal incontinent episodes more than twice per week were offered participation in this multicentered prospective trial. Patients showing ≥ 50% improvement during test stimulation were offered chronic implantation of the InterStim Therapy system (Medtronic; Minneapolis, MN). The aims of the current report were to provide 3-year follow-up data on patients from that study who underwent sacral nerve stimulation and were monitored under the rigors of an Food and Drug Administration-approved investigational protocol. One hundred thirty-three patients underwent test stimulation with a 90% success rate, of whom 120 (110 females) with a mean age of 60.5 years and a mean duration of fecal incontinence of 7 years received chronic implantation. Mean length of follow-up was 3.1 (range, 0.2-6.1) years, with 83 patients completing all or part of the 3-year follow-up assessment. At 3 years follow-up, 86% of patients (P < .0001) reported ≥ 50% reduction in the number of incontinent episodes per week compared with baseline and the number of incontinent episodes per week decreased from a mean of 9.4 at baseline to 1.7. Perfect continence was achieved in 40% of subjects. The therapy also improved the fecal incontinence severity index. Sacral nerve stimulation had a positive impact on the quality of life, as evidenced by significant improvements in all 4 scales of the Fecal Incontinence Quality of Life instrument at 12, 24, and 36 months of follow-up. The most common device- or therapy-related adverse events through the mean 36 months of follow-up included implant site pain (28%), paresthesia (15%), change in the sensation of stimulation (12%), and infection (10%). There were no reported unanticipated adverse device effects associated with sacral nerve stimulation therapy. Sacral nerve stimulation using InterStim Therapy is a safe and effective treatment for patients with fecal incontinence. These data support long-term safety and effectiveness to 36 months.
    Diseases of the Colon & Rectum 09/2011; 54(9):1065-75. · 3.20 Impact Factor
  • Journal of the American College of Surgeons 09/2011; 213(3):S24–S25. · 4.45 Impact Factor
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    ABSTRACT: A few studies have specifically addressed faecal incontinence (FI) in men. We sought to describe patterns of male FI, assess treatment outcome and compare some aspects of FI between men and women, including quality of life. Prospectively recorded data on 85 consecutive male patients evaluated for FI at our pelvic floor centre in 2004 and 2005 were reviewed and compared with a cohort of 408 female patients. Treatment outcome in men was assessed by questionnaire. The aetiology of FI could be determined in 61 (72%) men and was most commonly related to anal surgery (n = 23), prostate cancer therapy (n = 9) and spinal injury (n = 9). Eight patients had idiopathic soiling only. Mean age, Fecal Incontinence Severity Index (FISI) and quality of life scores were similar between men and women. Maximal mean resting pressure (MRP) and squeeze pressure (MSP) were on average higher in men than in women [MRP 56.9 (26.2) vs 40 (20.4) mmHg; P < 0.0001]; [MSP 98.1 (67.3) vs 39.4 (28.5) mmHg; P < 0.0001]. Sphincter defects involved the external sphincter less often in men (35 vs 70%, P = 0.004). Differences in faecal incontinence quality of life (FIQL) and SF-36 scores between men and women were minimal. After a median follow up of 2 years, complete resolution of symptoms was reported in 17% and improvement of symptoms in another 48% of men. Although physiological and anatomical features of FI differ between men and women, its severity and impact on quality of life are similar. External sphincter defects are less common in men; hence, direct sphincter repair is less frequently an option. Evaluation and treatment improves symptoms in more than half of male patients.
    Colorectal Disease 08/2011; 13(8):906-13. · 2.02 Impact Factor
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    ABSTRACT: Background: Obesity rates are rapidly growing in the developed world. While upper gastrointestinal disturbances and urinary incontinence are independently associated with obesity, the relationship between obesity and defecatory dysfunction is less well defined. Objectives: To summarize the literature on faecal incontinence, diarrhoea and constipation in obese patients and its effects of bariatric surgery. Search strategy: A Medline search was carried out on articles published from January 1966 to March 2010. Selection criteria: Original articles on adult obese or morbidly obese patients were identified, including results following bariatric surgery that reported faecal incontinence, diarrhoea or constipation. Other forms of pelvic floor dysfunction were excluded. Main outcome measures included faecal incontinence, diarrhoea and constipation rates and their severity in obese patients and following bariatric surgery. Twenty studies reported defecatory outcomes in obese patients (n = 14) and after bariatric surgery (n = 6). While constipation rates were similar, the rates of faecal incontinence and diarrhoea were higher in obese patients compared with non-obese patients. The exact rates of these conditions, and the correlations between body mass index (BMI) and faecal incontinence, diarrhoea and constipation, were not clear. Faecal incontinence improved after Roux-en-Y gastric bypass in studies with preoperative data. The effects of bariatric surgery on diarrhoea were unclear. Few studies have assessed the correlations between obesity and defecatory function and the effect of bariatric surgery. Studies were often not well controlled and used non-uniform instruments to assess bowel function. Obesity appears to be correlated with higher rates of faecal incontinence and diarrhoea. The effects of bariatric surgery on these conditions are not well defined. Well-controlled studies correlating outcome with physiological pelvic floor function are needed.
    Colorectal Disease 06/2011; 13(6):e92-103. · 2.02 Impact Factor
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    ABSTRACT: Surgical management of pelvic floor disorders depends on a comprehensive understanding of the structural integrity and function of the pelvic floor. For visualizing this region, ultrasonography has emerged as a procedure that is relatively easy to perform, cost-effective and widely available. In this review, pelvic floor ultrasonography, including two-dimensional (2D), three-dimensional (3D) and 4D imaging as well as transvaginal, endoanal and transperineal techniques, is discussed from a global and multicompartmental perspective, rather than using a compartmentalized approach. The role of the different sonographic modalities in the major disorders of the pelvic floor-urinary and fecal incontinence, pelvic organ prolapse and obstructed defecation syndrome-is evaluated critically.
    Ultrasound in Obstetrics and Gynecology 04/2011; 37(4):381-96. · 3.56 Impact Factor
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    ABSTRACT: Injection of a bulking agent in the anal canal is an increasingly used treatment for faecal incontinence, but efficacy has not been shown in a controlled trial. We aimed to assess the efficacy of injection of dextranomer in stabilised hyaluronic acid (NASHA Dx) for treatment of faecal incontinence. In this randomised, double-blind, sham-controlled trial, patients aged 18-75 years from centres in USA and Europe were randomly assigned (2:1) to receive either transanal submucosal injections of NASHA Dx or sham injections. Randomisation was stratified by sex and region in blocks of six, and managed with a computer generated, real-time, web-based system. Patients and investigators were masked to assignment for 6 months when the effect on severity of faecal incontinence and quality of life was assessed with a 2-week diary and clinical assessments. The primary endpoint was response to treatment based on the number of incontinence episodes. A response to treatment was defined as a reduction in number of episodes by 50% or more. Patients in the active treatment group are still being followed up. This trial was registered with, number NCT00605826. 278 patients were screened for inclusion, of whom 206 were randomised assigned to receive NASHA Dx (n=136) or sham treatment (n=70). 71 patients who received NASHA Dx (52%) had a 50% or more reduction in the number of incontinence episode, compared with 22 patients who received sham treatment (31%; odds ratio 2·36, 95% CI 1·24-4·47, p=0·0089). We recorded 128 treatment-related adverse events, of which two were serious (1 rectal abscess and 1 prostatic abscess). Anal injection of NASHA Dx is an effective treatment for faecal incontinence. A refinement of selection criteria for patients, optimum injected dose, ideal site of injection, and long-term results might further increase the acceptance of this minimally invasive treatment. Q-Med AB.
    The Lancet 03/2011; 377(9770):997-1003. · 39.21 Impact Factor
  • Gastroenterology 01/2011; 140(5). · 12.82 Impact Factor
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    ABSTRACT: Magnetic sphincter augmentation, a successful treatment of gastroesophageal reflux disease, has been applied to treat fecal incontinence. The purpose of this feasibility study was to understand the safety profile as well as the potential benefit of this new device when it is implanted in patients with fecal incontinence. A magnetic anal sphincter device was surgically implanted in candidates with documented fecal incontinence of more than 2 episodes per week at 3 investigational centers in Europe and the United States following ethics/institutional review board approval. The magnetic anal sphincter device was placed around the anal canal via a single anterior incision. All data were collected prospectively. The primary outcome measure was the reduction of incontinent episodes based on a daily continence diary. To date 14 patients have been implanted with the device (all female; mean age, 62.8 y; range, 41-74 y) with a median follow-up of 6 months. There have been no intraoperative complications. Mean hospital stay was 3 days; range, 1 to 7 days. Adverse events were observed in 7 patients. Three patients are no longer implanted with a device; 2 devices were removed and one passed spontaneously following a separation at the suture connection. Five patients with 6-month follow-up demonstrated a mean reduction in the number of average weekly incontinence episodes from 7.2 to 0.7 (90.9%) and a mean reduction in Wexner Continence Score from 17.2 to 7.8 (54.7%). Compared with baseline, quality of life improved in all 4 domains of the fecal incontinence quality of life (FIQoL) scoring system. No patients have reported that their condition has worsened. Two patients at 1-year follow-up both reported perfect continence. This preliminary study describes the use of a new device to treat fecal incontinence. Compared with existing devices, implantation is simple and it requires no adjustments from the physician or patient once the device is implanted. Initial assessment with a small number of patients shows promising outcomes with a limited incidence of complications and good restoration of continence.
    Diseases of the Colon & Rectum 12/2010; 53(12):1604-10. · 3.20 Impact Factor
  • Anders Mellgren
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    ABSTRACT: Endoanal ultrasound is essential in the assessment of patients suffering from fecal incontinence. The procedure can assist in selecting patients for the appropriate treatment modality and the procedure is also used in the evaluation of outcomes after treatment. Endoanal ultrasound can identify patients that may benefit from surgical sphincter repair with overlapping sphincteroplasty and the technique also plays an important role in selecting patients for other treatment options, including the artificial anal sphincter, sacral nerve stimulation, and injectable biomaterials.
    Seminars in Colon [amp ] Rectal Surgery 12/2010; 21(4):222-224.

Publication Stats

3k Citations
372.06 Total Impact Points


  • 2014
    • University of Illinois at Chicago
      Chicago, Illinois, United States
  • 2013
    • Abbott Northwestern Hospital
      Minneapolis, Minnesota, United States
  • 1998–2013
    • University of Minnesota Duluth
      Duluth, Minnesota, United States
  • 2006–2011
    • University of Minnesota Medical Center, Fairview
      Minneapolis, Minnesota, United States
    • University of Massachusetts Medical School
      • Department of Surgery
      Worcester, MA, United States
  • 1999–2011
    • University of Minnesota Twin Cities
      • Department of Surgery
      Minneapolis, MN, United States
  • 2010
    • Centre Hospitalier Universitaire de Nantes
      Naoned, Pays de la Loire, France
  • 2007
    • Madigan Army Medical Center
      Tacoma, Washington, United States
  • 1992–2004
    • Karolinska Institutet
      • • Department of Obstetrics and Gynecology
      • • Department of Surgery
      Stockholm, Stockholm, Sweden
  • 2002
    • Karolinska University Hospital
      Tukholma, Stockholm, Sweden