Idiopathic constipation: A challenging but manageable problem

Transanal proximal rectosigmoidectomy: a single-center experience in surgically treated severe medically refractory idiopathic constipation

PURPOSE

To present the functional results after a transanal proximal rectosigmoidectomy in patients with severe idiopathic constipation in which medical treatment has failed.

METHODS

Patients with severe idiopathic constipation who underwent transanal proximal rectosigmoidectomy (TPRS) at Children's Hospital Colorado between June 2019 and March 2024 were included in the study. We compared multiple pre- and post-operative outcome measures and the patient's bowel regimen before and after resection.

RESULTS

Fourteen patients underwent TPRS, 10 of whom were male. The average age at the time of surgery was 10.1 years (range 5-19). Seven patients have moderate to severe autism. Constipation-related clinic visits, family calls, procedural intervention, emergency room visits, and hospitalizations notably decreased frequency after TPRS. Laxative dosages and enema volume requirements were also reduced after surgery. Before surgery, all the patients suffered from daily fecal accidents, while post-operatively, all were completely free of stool accidents.

CONCLUSION

In our experience, for patients who suffer from severe medically refractory idiopathic constipation, TPRS has provided improvement in their symptoms and decreased the complications inherent to this chronic disease. Parents and patients attest to a profound positive transformation in their quality of life after surgery.

Standardization of radiograph readings during bowel management week

INTRODUCTION

During "bowel management week," abdominal radiographs are used to monitor the amount and location of stool. A radiologist familiar with the treatment plan can provide an improved interpretation. The goal of this paper is to standardize the radiological reports during a bowel management week.

METHODS

We saw 744 patients during bowel management week from May 2016 until March 2023. Diagnosis included: anorectal malformation (397), idiopathic constipation (180), Hirschsprung disease (89), and spina bifida (78). Laxatives were the treatment for 51% of patients, and 49% received enemas. Characteristic radiographs were selected for each treatment group for a proposed reading standardization.

RESULTS

When the stool is visualized, it is crucial to report its location. Having a contrast enema helps with the correct interpretation of the colonic anatomy. It is also essential to always compare the amount of stool with the radiograph from the previous day to determine if there is an increase or decrease in stool. Examples of radiographs are shown to guide the use of the preferred proposed terminology.

CONCLUSION

Providing information regarding which treatment modality the patient is receiving and stating that a patient is on a bowel management week treatment is crucial for the radiologist to provide adequate interpretation. The radiologist must be familiar with the treatment goals and purpose of the daily radiograph.

Radiologically supervised bowel management program outcome in patients with chronic idiopathic constipation

PURPOSE

This study aimed to analyze our radiologically supervised bowel management program (RS-BMP) outcomes in patients with chronic idiopathic constipation (CIC).

METHODS

A retrospective study was conducted. We included all patients with CIC who participated in our RS-BMP at Children´s Hospital Colorado from July 2016 to October 2022.

RESULTS

Eighty patients were included. The average time with constipation was 5.6 years. Before our RS-BMP, 95% had received non-radiologically supervised treatments, and 71% had attempted two or more treatments. Overall, 90% had tried Polyethylene Glycol and 43% Senna. Nine patients had a history of Botox injections. Five underwent anterograde continence procedure, and one a sigmoidectomy. Behavioral disorders (BD) were found in 23%. At the end of the RS-BMP, 96% of patients had successful outcomes, 73% were on Senna, and 27% were on enemas. Megarectum was detected in 93% of patients with successful outcomes and 100% with unsuccessful outcomes (p = 0.210). Of the patients with BD, 89% had successful outcomes, and 11% had unsuccessful.

CONCLUSION

Our RS-BMP has been proven to be effective in treating CIC. The radiologically supervised use of Senna and enemas was the appropriate treatment in 96% of the patients. BD and megarectum were associated with unsuccessful outcomes.

State of the Art Bowel Management for Pediatric Colorectal Problems: Functional Constipation

BACKGROUND

Functional constipation (FC) affects up to 32% of the pediatric population, and some of these patients are referred to pediatric surgery units to manage their constipation and/or fecal incontinence. The aim of the current paper is to report the recent updates on the evaluation and management of children with FC as a part of a manuscript series on bowel management in patients with anorectal malformations, Hirschsprung disease, spinal anomalies, and FC.

METHODS

A literature search was performed using Medline/PubMed, Google Scholar, Cochrane, and EMBASE databases and focusing on the manuscripts published within the last 5-10 years.

RESULTS

The first step of management of children with FC is to exclude Hirschsprung disease with a contrast study, examination under anesthesia, anorectal manometry (AMAN). If AMAN shows absent rectoanal inhibitory reflex, a rectal biopsy is performed. Internal sphincter achalasia or high resting pressures indicate botulinum toxin injection. Medical management options include laxatives, rectal enemas, transanal irrigations, and antegrade flushes. Those who fail conservative treatment require further assessment of colonic motility and can be candidates for colonic resection. The type of resection (subtotal colonic resection vs. Deloyer's procedure) can be guided with a balloon expulsion test.

CONCLUSION

Most of the patients with FC referred for surgical evaluation can be managed conservatively. Further studies are required to determine an optimal strategy of surgical resection in children unresponsive to medical treatment.

Evaluation and Management of Postsurgical Patient With Hirschsprung Disease Neurogastroenterology & Motility Committee: Position Paper of North American Society of Pediatric Gastroenterology, Hepatology, and Nutrition (NASPGHAN)

Children with Hirschsprung disease have postoperative long-term sequelae in defecation that contribute to morbidity and mortality and significantly impact their quality of life. Pediatric patients experience ongoing long-term defecation concerns, which can include fecal incontinence (FI) and postoperative obstructive symptoms, such as constipation and Hirschsprung-associated enterocolitis. The American Pediatric Surgical Association has developed guidelines for management of these postoperative obstructive symptoms and FI. However, the evaluation and management of patients with postoperative defecation problems varies among different pediatric gastroenterology centers. This position paper from the Neurogastroenterology & Motility Committee of the North American Society for Pediatric Gastroenterology, Hepatology, and Nutrition reviews the current evidence and provides suggestions for the evaluation and management of postoperative patients with Hirschsprung disease who present with persistent defecation problems.

Functional constipation refractory to medical management: The colon is the problem

BACKGROUND

Management of refractory constipation in children has not been standardized. We propose a protocolized approach which includes a contrast enema, anorectal manometry and exclusion of Hirschsprung disease (HD). For those without HD or with normal sphincters, an assessment of the colonic motility may be needed. The subgroups of dysmotility include (1) slow motility with contractions throughout, (2) segmental dysmotility (usually the sigmoid), or (3) a diffusely inert colon. We offered a Malone appendicostomy in all groups with the hope that this would avoid colonic resection in most cases.

METHODS

Patients with medically refractory constipation were reviewed at a single institution (2020 to 2021). For patients without HD or an anal sphincter problem, assessment of colonic motility using colonic manometry was performed followed by a Malone appendicostomy for antegrade flushes.

RESULTS

Of 196 patients evaluated for constipation refractory to medical management, 22 were felt to have a colonic motility cause. These patients underwent colonic manometry and Malone appendicostomy. 13 patients (59%) had a slow colon but with HAPCs throughout, 5 (23%) had segmental dysmotility, and 4 (18%) had a diffuse colonic dysmotility. 19 (86%) responded well to antegrade flushes with 17 reporting no soiling and 2 having occasional accidents. 3 patients (14%) failed flushes and underwent a colon resection within 6-month following Malone procedure.

CONCLUSION

We propose a protocol for medically refractory constipation which provides a collaborative framework to standardize evaluation and management of these patients with antegrade flushes, which aids in avoidance of colonic resection in most cases.

LEVEL OF EVIDENCE

Level IV.

Fecal continence disparities in patients with idiopathic constipation treated at referral institutions for pediatric colorectal surgery

PURPOSE

Fecal continence is a concern for many patients with idiopathic constipation and can significantly impact quality of life. It is unknown whether racial, ethnic, and socioeconomic disparities are seen in fecal continence within the idiopathic constipation population. We aimed to evaluate fecal continence and associated demographic characteristics in children with idiopathic constipation referred for surgical evaluation.

METHODS

A multicenter retrospective study of children with idiopathic constipation was performed at sites participating in the Pediatric Colorectal and Pelvic Learning Consortium (PCPLC). All patients >3y of age with idiopathic constipation diagnosis were included. The primary outcome was fecal continence, categorized as complete (no accidents ever), daytime (no accidents during the day), partial (occasional incontinence day/night), and none (incontinent). We evaluated for associations between fecal continence and race, sex, age, insurance status, and other patient-level factors, employing Kruskal-Wallis and trend tests.

RESULTS

458 patients with idiopathic constipation from 12 sites were included. The median age of diagnosis was 4.1 years. Only 25% of patients referred for surgical evaluation were completely continent. Age at the visit was significantly associated with fecal continence level (p = 0.002). In addition, patients with public and mixed public and private insurance had lower levels of continence (p<0.001). Patients with developmental delay were also more likely to have lower continence levels (p = 0.009) while diagnoses such as anxiety, ADD/ADHD, autism, depression, obsessive-compulsive disorder were not associated. Approximately 30% of patients had an ACE operation (antegrade continence enema) at a median age of 9.2 years at operation. Black patients were significantly less likely to undergo ACE operation (p = 0.016) when compared to white patients.

CONCLUSION

We observed data that suggest differences in fecal incontinence rates based on payor status. Further investigation is needed to characterize these potential areas of disparate care.

LEVEL OF EVIDENCE

Level III.

Do preoperative factors predict success of antegrade continence enemas in children?

INTRODUCTION

Antegrade continent enemas (ACE) procedures are one treatment option in children with medically refractory constipation or encopresis and predicting success is difficult. We hypothesize that there are preoperative factors that can be identified to help with patient selection and family counseling.

METHODS

We conducted a retrospective study of children who underwent a cecostomy or appendicostomy for an ACE program between 2015 and 2021. Underlying diagnosis, pre-operative bowel regimen and imaging were analyzed. Patients were reviewed for success at 3-, 6- and 12-months post-procedure. Data was analyzed with Fisher's Exact, Kruskal-Wallis and logistic regression where applicable with significance defined as p < 0.05.

RESULTS

Forty-three children were identified; 28 were male, 15 were female, mean age at time of operation was 8 years old. 76% were considered successful at 3-months, 86% at 6-months, and 87% at 12-months post- procedure. Univariate analysis showed that a pre-ACE retrograde enema program predicted success at 3-months (94% vs. 64% p = 0.03) but no difference at 6- or 12-months. At one year after ACE procedure there was a significant reduction in number of enteral medications (2 to 0, p < 0.01) and 94% of patients were on one or fewer at one year follow-up. Age, gender, weight at time of operation, contrast enema, anorectal manometry and colonic transit time results were not predictive of outcomes.

CONCLUSION

In this study, we characterized expected time to success in our population as well as identified use of a pre-operative retrograde enema program as a potential predictor of success at 3-months in children undergoing an ACE procedure.

LEVEL OF EVIDENCE

IV.

TYPE OF STUDY

Prognosis study.

The success rate of antegrade enemas for the management of idiopathic constipation

PURPOSE

Most patients with idiopathic constipation achieve daily voluntary bowel movements with stimulant laxatives after a "Structured Bowel Management Program" (BMP). A small percentage require rectal enemas. One week in a BMP to find the right enema recipe results in a success rate great than 95%. Once the enema is radiologically and clinically effective, antegrade continent enema procedures (ACE) can afford patients an alternative route of enema administration. This study summarized the outcomes of children with idiopathic constipation who receive antegrade enemas (AE) with or without a prior BMP.

METHODS

This was a single institution, retrospective cohort study of children with idiopathic constipation who underwent ACE procedures indicated by different providers from 2015-2020. We categorized the outcomes with AE after the ACE procedure as: "successful outcome" when the AE produced a daily bowel movement, no involuntary bowel movements, and no more fecal impactions, "unsuccessful outcome" was defined when the patient continued having involuntary bowel movements or fecal impaction requiring cleanouts despite a daily AE, and "unnecessary outcome" was defined when the patient was no longer doing AE, but had daily bowel movements, and no involuntary bowel movements or fecal impactions.

RESULTS

Thirty-eight children with idiopathic constipation had an ACE. The most frequent indication for ACE was a failure of medical treatment. The most common medical treatment was polyethylene glycol. Before ACE, 34 (89%) patients did not have a BMP; 18 patients were on rectal enemas and 16 on laxatives. All four with BMP (100%) had a successful rectal enema. After ACE, 12 (31%) patients had successful antegrade enemas, including the four with previous successful BMP with rectal enemas. Twenty patients (52%) had unsuccessful antegrade enemas, and in 6 (15%), the ACE was unnecessary (Fig. 1).

CONCLUSION

Using antegrade enemas without a previously successful formula for rectal enemas has resulted in a high rate of unsuccessful and unnecessary procedures. BMP for children with idiopathic constipation who needs rectal enemas offers a high possibility to find the proper rectal enema recipe and ensures higher rates of successful AE.

The importance of dedicated colorectal team participation in the management of spina bifida and spinal cord injury patients

PURPOSE

In September 2020, the colorectal team of the International Center for Colorectal and Urogenital Care joined the spina bifida and spinal cord injury multidisciplinary clinic at Children's Hospital Colorado. Many important lessons were learned.

METHODS

A retrospective review of patients seen in the spina bifida and spinal cord injury multidisciplinary clinic from September 2020 to May 2021 was conducted. Data collected included demographics, diagnosis, pre or post-natal repair for those with myelomeningocele, whether the patient was previously seen by the colorectal team, wheelchair usage, voluntary bowel control vs. fecal incontinence, urinary control vs. clean intermittent catheterization, characteristics of contrast enema, and our proposed intervention.

RESULTS

Overall, 189 children were seen during the study period, ranging from 3 months to 20 years of age (average = 9.5 years). One hundred and two were males and 87 were females. Diagnosis included myelomeningocele (n = 153), spinal cord injury (n = 18), transverse myelitis (n = 7), sacral agenesis (n = 5), diastematomyelia (n = 2), spinal stenosis (n = 2), and tethered cord with lipoma (n = 2). Fifteen patients with myelomeningocele were repaired in-utero. One hundred and sixty patients were new to the colorectal team. Eighty-one patients were wheelchair users. One hundred and twenty-three patients suffered from fecal incontinence and needed enemas to be artificially clean for stool and thirty-eight patients had voluntary bowel movements and were clean with laxatives, suppository, or rectal stimulations. Twenty-eight patients were younger than three years of age and still in diapers. Despite a non-dilated colon on contrast enema, this population has a hypomotile colon. One hundred and twenty-eight patients required clean intermittent catheterization.

CONCLUSION

Joining the spina bifida and spinal cord injury multidisciplinary clinic allowed us to better serve this population and gave us enormous satisfaction to contribute to improve the quality of life of the patients and their parents.

LEVEL OF EVIDENCE

III.

Reducing Constipation-Related Admissions: The Effectiveness of Antegrade Continence Enema Procedures in Children

INTRODUCTION

Constipation in pediatrics remains a common problem. Antegrade continence enema (ACE) procedures have been shown to decrease the distress of daily therapy. Patients are able to administer more aggressive washouts in the outpatient setting. Therefore, we hypothesize that patients following an ACE procedure would have reduced admissions for constipation.

METHODS

Patients who underwent an ACE procedure at a large children's hospital from 2015 to 2018 were included. Demographics, diagnosis, procedure, and preoperative/postoperative hospital admissions were analyzed.

RESULTS

Forty-eight patients were included in the study. Over half were diagnosed with idiopathic constipation. Majority of patients underwent an appendicostomy (88%, n = 42). Preoperatively, 26 patients were admitted for a combined total of 63 times for constipation. Postoperatively, 4 patients were admitted for a total of 5 visits (P = .021). Twenty-eight patients required a nonscheduled appendicostomy tube replacement.

CONCLUSION

This study demonstrates ACE procedures can improve constipation-related symptoms in children and are associated with decrease hospital admissions.

Analysis of patients' and caregivers' psychosocial functioning in colorectal conditions: comparison of diagnosis, gender, and developmental functioning

PURPOSE

To evaluate the psychosocial functioning of caregivers and patients with anorectal malformation (ARM), Hirschsprung disease (HD), spinal conditions, and idiopathic constipation (IC) during the beginning of participation in bowel management program (BMP).

METHODS

In this retrospective study, Parent Stress Scale (PSS, parent-report) and Strengths and Difficulties Questionnaire (SDQ, parent-proxy; SDQ-S, self-report for 11 years and older) were used to evaluate parental stress levels and behavioral functioning, respectively. Descriptive and comparative statistical approaches were applied to summarize the data and to determine differences in scores between diagnoses, gender, and developmental functioning.

RESULTS

Two hundred patients and caregivers participated in BMP during the study period. PSS scores were significantly higher for caregivers of patients with IC than ARM. Statistical differences in SDQ were found for patients with IC versus those with ARM, male versus female patients, and patients with developmental delays versus those without delays. No significant differences were found in SDQ-S scores between these groups.

CONCLUSION

Key findings suggest that level of parental stress and behavioral concerns were significantly influenced by diagnoses, and partly by gender and presence of developmental delay. Thus, psychosocial support may need to be tailored based on these findings to provide optimum quality of care for patients and families.

Transanal proximal rectosigmoidectomy. A new operation for severe chronic idiopathic constipation associated with megarectosigmoid

BACKGROUND

At the severe end of the idiopathic constipation spectrum exist patients with chronic idiopathic constipation associated with an enormous megarectosigmoid, among whom few require surgery. We performed transanal proximal rectosigmoidectomy, involving preservation of a 5 cm rectal reservoir, to ameliorate inconsistent and unpredictable outcomes and fecal incontinence occurring in some patients operated on with other techniques.

METHODS

We retrospectively observed patients with chronic idiopathic constipation with megarectosigmoid who underwent transanal proximal rectosigmoidectomy during July 2017-May 2018. We analyzed sex, age, operation indication, complications, functional outcome, and time of follow-up. We statistically compared the dosage of laxative before and after the procedure.

RESULTS

Thirteen patients were included in the study. Median age during surgery was 8 years. In 9 cases, the indication for surgery was chronic intake of a daily high dose of Senna with failed weaning trials, and 4 had persistent fecal impaction with laxative-intolerance and refusal of rectal enemas. No intra/postoperative complications occurred. Currently, all 13 patients have daily voluntary bowel movements and no fecal accidents. Laxative dosage was significantly reduced (p = 0.007). Follow-up ranged 6-16 months.

CONCLUSION

Preliminary results suggest transanal proximal rectosigmoidectomy as an adequate alternative for patients requiring surgery for chronic idiopathic constipation with megarectosigmoid.

TYPE OF STUDY

Clinical research.

LEVEL OF EVIDENCE

Level III.