CBCoen I. M. Baeten

Coen I. M. Baeten

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Current Organizations / Institutes

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Previous Organizations / Institutes

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Coen I. M. Baeten has a total of 38 co-authors. Here are the top co-authors by number of shared publications:


Latest Publications

  • Open Access

    Transanal irrigation: Bridging the gap in treatment for chronic constipation and/or faecal incontinence—A systematic review and management guidance

    by Paul F. Vollebregt, Coen I. M. Baeten, Asbjørn M. Drewes, Franco Marinello, Jacopo Martelluci, Mira Mekhael, Karen Nugent, Andreas D. Rink, Harald Rosen, S. Mark Scott, et al.

    Aim: The aims of the study were to: (1) update a systematic review on the efficacy of transanal irrigation (TAI) in patients with chronic constipation (CC) and/or faecal incontinence (FI); (2) provide guidance on the position of TAI in the treatment pathway of CC and FI; and (3) discuss knowledge gaps and areas of future research. Method: A collaborative of 11 experts (gastroenterologists, colorectal surgeons, and clinical scientists) from eight European countries was established. The expert group was divided into three main groups, with each group leading a specific section (systematic review, treatment pathway, and knowledge gaps). A previously published systematic review on TAI was updated by conducting an additional search on 12 April 2025. Studies on TAI in specific subgroups (neurogenic bowel dysfunction, low anterior resection syndrome) were excluded. Results: Sixteen studies involving 1567 (range 16–507) patients were included. Only one underpowered randomised trial was performed, which demonstrated that high‐volume TAI may be more effective than low‐volume TAI in patients with CC. Most other studies (observational) showed improvement in symptoms and/or quality of life to some extent, with a large variation in outcomes used. Treatment discontinuation was reported in 3–57% of patients. The position of TAI in the treatment pathway of CC and FI was proposed, and 13 knowledge gaps were provided. Conclusion: TAI may be an effective treatment in patients with CC and/or FI. There is a need for randomised controlled trials to study its efficacy and current knowledge gaps.


  • Open Access

    Sacral Neuromodulation Versus Conservative Treatment for Refractory Idiopathic Slow-transit Constipation

    by Stella C.M. Msc Heemskerk, Carmen D. Dirksen, Sander M.J. van Kuijk, Marc A. Benninga, Coen I.M. Baeten, Ad A.M. Masclee, Jarno Melenhorst, Stéphanie O. Breukink

    Objective: Assess the effectiveness of sacral neuromodulation (SNM) versus personalized conservative treatment (PCT) in patients with refractory idiopathic slow-transit constipation (STC). Background: Evidence on SNM for idiopathic STC is conflicting and of suboptimal methodological quality. Methods: The No.2-Trial was a multicenter, open-label, pragmatic, randomized trial performed in 2 Dutch hospitals. Sixty-seven patients with idiopathic STC, a defecation frequency P=0.003). At 6 months, SNM patients reported lower constipation severity and fatigue scores (PP<0.001). Eight serious adverse events (6 SNM, 2 PCT) and 78 adverse events (68 SNM, 10 PCT) were reported. Conclusions: SNM is a promising surgical treatment option in a homogeneous group of adults and adolescents with refractory idiopathic STC. No.2-Trial registered at ClinicalTrials.gov NCT02961582.


  • Open Access

    Clinical characteristics of phenotypes of fecal incontinence

    by M. E. Knol, E. Bastiaannet, M. C. DeRuiter, H. S. Snijders, J. T. M. van der Heyden, C. I. M. Baeten

    Purpose: Fecal incontinence (FI) is common, but its etiology is complex with large knowledge gaps. Several phenotypes of FI are known, but the phenotype is often not decisive in the chosen therapy. In this study we aimed to assess the association of the clinical characteristics of patients with FI and the various phenotypes, in order to establish a targeted clinical treatment decision tree. Methods: We retrospectively studied the charts of patients with FI, who visited our institute from January 2018 until December 2020. Patients were divided into the following groups: passive fecal loss, urge incontinence, combined fecal incontinence with predominantly passive fecal loss, and combined fecal incontinence with predominantly urge incontinence. We compared the characteristics between the passive and urge incontinence groups, the passive and combined mainly passive groups, and the urge and combined mainly urge groups. Results: Patients with passive incintinence were older, more often had a flaccid anus with presence of a mucosal prolapse, and had a lower resting pressure on anorectal manometry. Patients with urge incontinence were younger and more often had a history of birth trauma. The combined groups showed characteristics of both of the main types of FI. Conclusion: Differentiating into phenotypes of FI can be clinically meaningful. The patient history and clinical judgement of the consulting specialist, rather than the physical characteristics, seem to be decisive in the categorization. Additional diagnostic testing can be helpful in complicated cases, but should not be used routinely.


  • Open Access

    Fecal Incontinence: The Importance of a Structured Pathophysiological Model

    by Marloes E Knol, Heleen S Snijders, Johannes Tm van der Heyden, Coen Im Baeten

    Fecal incontinence has an enormous social and economic impact and may significantly impair quality of life. Even though fecal incontinence is a common complaint in (aging) adults, a structured pathophysiological model of the clinical presentations of fecal incontinence is missing in current literature. The most frequent manifestations of fecal incontinence are passive fecal loss, urge incontinence, or mixed fecal incontinence. At our institution, we treat 400 patients per year with defecation disorders, including a significant number of patients with fecal incontinence. On the basis of this experience, we have tried to create a concept that merges current insight in causes and treatment options in a clinically useful algorithm. By applying the system of anamnesis and physical examination described in this article and expanding it with simple additional anorectal examination, in most patients, one can determine the type of fecal incontinence and choose a targeted therapy.


  • Non-dynamic graciloplasty is an effective treatment for patients with passive fecal incontinence

    by M. E. Knol, H. S. Snijders, M. C. DeRuiter, S. M. P. Koch, J. T. M. van der Heyden, C. I. M. Baeten

    Background Fecal incontinence is a multifactorial problem and its etiology is complex. Various therapies are available and different success rates have been described. The aim of this study was to assess the effectiveness and safety of non-dynamic graciloplasty in patients with passive fecal incontinence. Methods We retrospectively studied charts of patients with fecal incontinence treated with graciloplasty at our institution from November 2015 until June 2018. Patients were included according to the following criteria: (1) presence of predominantly passive fecal incontinence and (2) presence of a lax perineal body. Primary outcome was the effectiveness, defined as a significant reduction or absence of the complaints of passive fecal incontinence at 3, 6 and 12 months after surgery. Second, we studied the safety of the procedure evaluating the complications within 30 days after surgery. Results Thirty-one patients met the inclusion criteria. Twenty-six of them, in addition to passive incontinence as the main symptom, had some degree of fecal urgency. The median age at the first visit to the outpatient clinic was 64.0 years (IQR 52–68). Most patients were female (n = 29, 94%). At 3 months after graciloplasty, 71% (22 of 31) of patients were successfully treated for their passive fecal incontinence. At 6 months, the success rate of the graciloplasty increased to 77%. At 12 months among the patients who were still seen in the clinic, the success rate was 58% (18/31). Two patients cancelled follow-up visits after 3 months, because of failure to control symptoms in 1 case. After 6 months, 9 patients were given the choice to do telephone follow-up only. Of these 11 patients without in-person follow-up, 10 were contacted 1 year after surgery and in 7 of them, the graciloplasty was effective in controlling their passive fecal incontinence for an overall success rate of 80% (25/31). Of the 26 patients with mixed passive and urge incontinence, 6 (23%) still complained of urge incontinence at 1 year. Of these patients with persistent urge incontinence, 6 underwent sacral nerve stimulation which was successful in 4. Two serious complications occurred within 30 days. A rectal perforation requiring temporary colostomy and a recto-vaginal fistula which was successfully repaired. Conclusion Non-dynamic graciloplasty is an effective treatment for passive fecal incontinence. Differentiation based on subtypes of fecal incontinence might be important for a pattern-specific approach to treatment. More research is necessary to determine the right indications for more invasive treatments of fecal incontinence.


  • Top Cited Papers
    Open Access

    Management guidelines for low anterior resection syndrome – the MANUEL project

    by Peter Christensen, Coen Im Baeten, Eloy Espín-Basany, Jacopo Martellucci, Karen P Nugent, Frank Zerbib, Gianluca Pellino, Harald Rosen

    Aim: Little is known about the pathophysiology of low anterior resection syndrome (LARS), and evidence concerning the management of patients diagnosed with this condition is scarce. The aim of the LARS Expert Advisory Panel was to develop practical guidance for healthcare professionals dealing with LARS.Method: The ‘Management guidelines for low anterior resection syndrome’ (MANUEL) project was promoted by a team of eight experts in the assessment and management of patients with LARS. After a face‐to‐face meeting, a strategy was agreed to create a comprehensive, practical guide covering all aspects that were felt to be clinically relevant. Eight themes were decided upon and working groups established. Each working group generated a draft; these were collated by another collaborator into a manuscript, after a conference call. This was circulated among the collaborators, and it was revised following the comments received. A lay patient revised the manuscript, and contributed to a section containing a patient's perspective. The manuscript was again circulated and finalized. A final teleconference was held at the end of the project.Results: The guidance covers all aspects of LARS management, from pathophysiology, to assessment and management. Given the lack of sound evidence and the often poor quality of the studies, most of the recommendations and conclusions are based on the opinions of the experts.Conclusions: The MANUEL project provides an up‐to‐date practical summary of the available evidence concerning LARS, with useful directions for healthcare professional and patients suffering from this debilitating condition.


  • Improving the outcome of fistulising Crohn's disease

    by Ilse Molendijk, Koen C.M.J. Peeters, Coen I.M. Baeten, Roeland A. Veenendaal, Andrea E. van der Meulen-De Jong


  • Proliferating Endothelial Cells and Leukocyte Infiltration as Prognostic Markers in Colorectal Cancer

    by Coen I.M. Baeten, Karolien Castermans, Harry F.P. Hillen, Arjan W. Griffioen