The effect of anorectal manometry on the outcome of treatment in severe childhood constipation: a randomized, controlled trial

Anorectal manometry findings in relation with long-term functional outcomes of the patients operated on for Hirschsprung's disease compared to the reference-based population

PURPOSE

This study investigated anorectal manometry (AM) findings and bowel function of patients operated on for Hirschsprung's disease (HD).

METHODS

A cross-sectional study was conducted at Children's Hospital 2. Patients operated on for HD from January 2015 to January 2020 were reviewed. Their clinical characteristics, bowel function, and manometric findings were investigated and compared with the references.

RESULTS

Ninety-five patients and 95 references were enrolled. Mean ages were 6.6 ± 2.2 years and 7.2 ± 2.9 years,; fecal incontinence rates were 25.3% and 2.1%, and constipation rates were 12.6% and 4.2 for the patients versus the references, respectively. Anal resting pressures were significantly decreased in the patients compared to the references (53.2 ± 16.1 mmHg versus 62.2 ± 14.0 mmHg; p < 0.05). Among the patients, the anal resting pressure was significantly decreased in the incontinents than in the continents (46.0 ± 10.6 mmHg versus 55.6 ± 16.9 mmHg, p < 0.05). During the sensation test, the value of maximum tolerated volume was significantly decreased in the incontinents than in the continents (135.9 ± 47.9 mL versus 166.6 ± 58.3 mL, p < 0.05).

CONCLUSION

AM is an objective method providing beneficial information that could guide a more adapted management in HD patients with defecation disorders.

The use of biofeedback for children with fecal incontinence secondary to retentive constipation: Experience of a French Pediatric Center

BACKGROUND

Fecal incontinence (FI) secondary to chronic retentive constipation is a frequent demand in pediatric gastroenterology clinics. The management of constipation in children includes laxatives (polyethylene glycol, PEG), enhanced toilet training, and dietary advice. Biofeedback is a possible treatment for children above the age of 7 years with resistant FI.

AIM

To analyze any changes in volume to trigger defecation (VTD) and envy score over the course of biofeedback sessions according to clinical response.

METHODS

In this retrospective study, we reviewed the medical records of 23 children diagnosed with FI according to the Rome IV criteria and treated with biofeedback. For each biofeedback session, a mean VTD by subject was measured. At the end, therapy was considered a success if soiling disappeared and a failure if any persisted. The need to defecate expressed by the child was described as an envy score. A 0-10 visual analog scale was used to express the intensity of this sensation. Follow-up involved calling the parents 12 months after the biofeedback sessions had ended to assess symptoms remotely.

RESULTS

The study included 19 boys and 4 girls with a median age of 10 years. Patients' ages ranged between 7 and 17 years. None of them had any associated neurological disorders. All children had FI for >1 year. The median number of soiling episodes per week was 7. The average number of biofeedback sessions was 3 (range 1-5). At the end of the rehabilitation sessions, 12 children (52%) were in the "success" group. In the latter, median VTD decreased from 97 ml to 70 ml between the first and last session. In the "failure" group, VTD decreased from 120 ml to 100 ml. The between-group difference in the median VTD at the first session was not statistically significant. The last observation carried forward (LOCF) VTD was significantly lower in the "success" group compared to the "failure" group (70 ml versus 100 ml, p = 0.03). Median envy scores decreased during the biofeedback sessions with no statistical difference between the groups at the last session. Follow-up of children in the "success" group one year after the last biofeedback session revealed that 10 patients had no relapse (83%) and 2 were lost to follow-up.

CONCLUSIONS

Biofeedback might be an effective tool for the management of FI resistant to medical treatment in children.

Efficacy of Non-pharmacologic Auxiliary Treatments in Improving Defecation Function in Children With Chronic Idiopathic Constipation: A Systematic Review and Network Meta-analysis

Background: Non-pharmacologic auxiliary treatments have been considered crucial therapies for treating chronic idiopathic constipation (CIC) during the past decades worldwide. Several treatment patterns are available, but their relative efficacy is obscure because there are no head-to-head randomized controlled trials, especially in children. We conducted this network meta-analysis to evalute the effectiveness of these therapies in improving defecation function based on their direct comparisons with standard medical care. Methods: Medline, Embase, and Cochrane Central were searched for randomized controlled trials (RCTs) published in English from inception to October 2020, assessing the efficacy of auxiliary therapies (behavior therapy, physiotherapy, biofeedback, or anorectal manometry) in children with CIC. We extracted data for endpoints, risk of bias, and evidence quality. Eligible studies in the meta-analysis reported the data of a dichotomous assessment of overall response to treatment (response or not) or defecation frequency per week after treatment. The hierarchical Bayesian network meta-analysis was used in the study. We chose a conservative methodology, random effects model, to pool data which could handle the heterogeneity well. The relative risk (RR) with 95% confidence intervals (CIs) was calculated for dichotomous outcomes. For continuous results, weighted mean difference (WMD) with related CIs was calculated. The included treatments were ranked to define the probability of being the best treatment. Results: Seven RCTs (838 patients) met inclusion and endpoint criteria. Based on an endpoint of the absence of constipation (Rome criteria) with laxatives allowed, physiotherapy plus standard medical care (SMC) had the highest probability (84%) to bethe most effective therapy. When the treatment response was defined as an absence of constipation with not laxatives allowed, biofeedback plus SMC ranked first (probability 52%). Physiotherapy plus SMC ranked first when the endpoint was based on defecation frequency per week with laxatives allowed (probability 86%). Conclusion: Almost all auxiliary therapies are effective complementary therapies for treating CIC, but they needed to be used simultaneously with SMC. Nevertheless, because of the small number of eligible studies and their small sample sizes, the differences in treatment duration and the endpoints, large sample RCTs with long-term follow-up are required for further investigation.

Anorectal manometry in children with defecation disorders BSPGHAN Motility Working Group consensus statement

Defecatory disorders in children, including chronic constipation (CC) and fecal incontinence (FI), are common conditions worldwide and have a significant impact on children, their families, and the healthcare system. Anorectal manometry (ARM) and high-resolution anorectal manometry (HRAM) are relatively novel tools for the assessment of anal sphincter function and rectal sensation and have contributed significantly to improving the understanding of the anorectum as a functional unit. ARM has been recognized as the investigation of choice for adults with symptoms of defecation disorders, including fecal incontinence (FI), evacuation difficulties, and constipation. Although it is the gold standard tool in adults, it has yet to be formally accepted as a standardized diagnostic tool in the pediatric age, with limited knowledge regarding indications, protocol, and normal values. ARM/HRAM is slowly becoming recognized among pediatricians, but given that there are currently no agreed guidelines there is a risk that will lead to diversity in practice. The British Society of Paediatric Gastroenterology, Hepatology and Nutrition (BSPGHAN)-Motility Working Group (MWG) therefore has taken the opportunity to provide guidance on the use of ARM/HRAM in children with CC and/or FI.

A Practical Guide to Biofeedback Therapy for Pelvic Floor Disorders

PURPOSE OF REVIEW

Biofeedback therapy (BFT) is effective for managing pelvic floor disorders (i.e., defecatory disorders and fecal incontinence). However, even in controlled clinical trials, only approximately 60% of patients with defecatory disorders experienced long-term improvement. The review serves to update practitioners on recent advances and to identify practical obstacles to providing biofeedback therapy.

RECENT FINDINGS

The efficacy and safety of biofeedback therapy have been evaluated in defecatory disorders, fecal incontinence, and levator ani syndrome. Recent studies looked at outcomes in specific patient sub-populations and predictors of a response to biofeedback therapy. Biofeedback therapy is effective for managing defecatory disorders, fecal incontinence, and levator ani syndrome. Patients who have a lower bowel satisfaction score and use digital maneuvers fare better. Biofeedback therapy is recommended for patients with fecal incontinence who do not respond to conservative management. A subset of patients with levator ani syndrome who have dyssynergic defecation are more likely to respond to biofeedback therapy.

Effectiveness of Pelvic Physiotherapy in Children With Functional Constipation Compared With Standard Medical Care

BACKGROUND & AIMS

Functional constipation (FC) is a common childhood problem often related to pelvic floor muscle dysfunction. We compared the effectiveness of pelvic physiotherapy (PPT) vs standard medical care (SMC) in children with FC.

METHODS

We performed a multicenter randomized controlled trial of 53 children (age, 5-16 y) with FC according to the Rome III criteria, at hospitals in The Netherlands from December 2009 to May 2014. Group allocation was concealed using a central computer system. SMC consisted of education, toilet training, and laxatives (n = 26), whereas PPT included SMC plus specific physiotherapeutic interventions (n = 27). Results were obtained from written reports from the subjects' pediatricians and parents. The primary outcome was absence of FC, according to Rome III criteria, after a 6-month follow-up period. Secondary outcomes were global perceived effect (range, 1-9; success was defined as a score ≥ 8), numeric rating scales assessing quality of life (parent and child; scale, 1-10), and the strengths and difficulties questionnaire (SDQ).

RESULTS

Treatment was effective for 92.3% of the children receiving PPT and for 63.0% of the children receiving SMC (adjusted odds ratio for success of PPT, 11.7; 95% confidence interval, 1.8-78.3) (P = .011). Significantly more children undergoing PPT stopped using laxatives (adjusted odds ratio, 6.5; 95% confidence interval, 1.6-26.4) (P = .009). Treatment success (based on global perceived effect) was achieved for 88.5% of subjects receiving PPT vs 33.3% of subjects receiving SMC) (P < .001). PPT also produced larger adjusted mean differences, before vs after treatment, in numeric rating scales to assess quality of life: an increase of 1.8 points for parents (P = .047) and 2.0 points for children (P = .028). Results from the SDQ did not differ significantly between groups (P = .78).

CONCLUSIONS

In a randomized controlled trial of children with FC, PPT was more effective than SMC on all outcomes measured, with the exception of findings from the SDQ. PPT should be considered as a treatment option for FC in children 5-16 years old. Dutch Clinical Trial Registration no: NL30551.068.09.

The effect of pelvic physiotherapy on reduction of functional constipation in children: design of a multicentre randomised controlled trial

Background

Functional constipation is a common disorder worldwide and is found in all paediatric age groups. Functional constipation can be caused by delayed colonic transit or dysfunction of the pelvic floor muscles. Standard medical care in paediatric practice is often based on clinical experience and mainly consists of a behavioural approach and toilet training, along with the prescription of laxatives. Evidence to evaluate the effectiveness of pelvic physiotherapy for this complaint is lacking.

Methods/design

A two-armed multicentre randomised controlled trial has been designed. We hypothesise that the combination of pelvic physiotherapy and standard medical care will be more effective than standard medical care alone for constipated children, aged 5 to 17 years. Children with functional constipation according to the Rome III will be included. Web-based baseline and follow-up measurements, scheduled at 3 and 6 months after inclusion, consist of the numeric rating scale in relation to the perceived severity of the problem, the Strength and Difficulties Questionnaire and subjective improvement post-intervention (global perceived effect). Examination of the pelvic floor muscle functions, including digital testing and biofeedback, will take place during baseline and follow-up measurements at the physiotherapist. The control group will only receive standard medical care, involving at least three contacts during five months, whereas the experimental group will receive standard medical care plus pelvic physiotherapy, with a maximum of six contacts. The physiotherapy intervention will include standard medical care, pelvic floor muscle training, attention to breathing, relaxation and awareness of body and posture. The study duration will be six months from randomisation, with a three-year recruitment period. The primary outcome is the absence of functional constipation according to the Rome III criteria.

Discussion

This section discusses the relevance of publishing the study design and the development of the presented physiotherapy protocol. It also addresses difficulties when interpreting the literature with regard to the effectiveness of biofeedback, potential confounding, and future research indications. To our knowledge, this article is the first to describe the design of a randomised controlled trial among children with constipation to assess the effect of pelvic physiotherapy as an add-on to standard medical care.

Trial registration

Current Controlled Trials NL30551.068.09

Anorectal functional abnormalities in Egyptian children with chronic functional constipation

BACKGROUND AND STUDY AIMS

Chronic functional constipation represents 95% of the cases of paediatric constipation. Epidemiologic data, pathophysiology and anorectal functional abnormalities vary greatly among different reports across different populations. The aim of this study was to evaluate these data in Egyptian children with chronic functional constipation.

PATIENTS AND METHODS

This study included 150 children with chronic functional constipation (101 males, 49 females; mean age 6 ± 3.1 years); a control group of 50 age- and sex-matched healthy children were enrolled for standardisation of the manometry technique. A structured symptom questionnaire and clinical examination including digital rectal examination in addition to anorectal manometry were done for all included children. Defaecation dynamics were assessed in all children 5 years or older using anorectal manometry with integrated electromyogram of the external anal sphincter and the puborectalis muscle.

RESULTS

The maximal tolerable volume was significantly higher in the constipated children than in the control group (p=0.03). No significant differences existed between constipated and control children regarding other anorectal manometric parameters. Abnormal defaecation dynamics were detected in 35 out of 95 tested patients (36.8%).

CONCLUSION

Increased maximal tolerable volume is the most striking manometric feature in Egyptian children with chronic functional constipation. Abnormal defaecation dynamics were detected in about one-third of the tested patients. Standardisation of the measurement techniques and obtaining normal ranges for anorectal manometric parameters for each laboratory are recommended.

Behavioural and cognitive interventions with or without other treatments for the management of faecal incontinence in children

BACKGROUND

Faecal incontinence is a common and potentially distressing disorder of childhood.

OBJECTIVES

To assess the effects of behavioural and/or cognitive interventions for the management of faecal incontinence in children.

SEARCH METHODS

We searched the Cochrane Incontinence Group Specialised Trials Register (searched 28 October 2011), which contains trials identified from the Cochrane Central Register of Controlled Trials (CENTRAL), MEDLINE and CINAHL, and handsearching of journals and conference proceedings, and the reference lists of relevant articles. We contacted authors in the field to identify any additional or unpublished studies.

SELECTION CRITERIA

Randomised and quasi-randomised trials of behavioural and/or cognitive interventions with or without other treatments for the management of faecal incontinence in children.

DATA COLLECTION AND ANALYSIS

Reviewers selected studies from the literature, assessed study quality, and extracted data. Data were combined in a meta-analysis when appropriate.

MAIN RESULTS

Twenty one randomised trials with a total of 1371 children met the inclusion criteria. Sample sizes were generally small. All studies but one investigated children with functional faecal incontinence. Interventions varied amongst trials and few outcomes were shared by trials addressing the same comparisons.Combined results of nine trials showed higher rather than lower rates of persisting symptoms of faecal incontinence up to 12 months when biofeedback was added to conventional treatment (OR 1.11 CI 95% 0.78 to 1.58). This result was consistent with that of two trials with longer follow-up (OR 1.31 CI 95% 0.80 to 2.15). In one trial the adjunct of anorectal manometry to conventional treatment did not result in higher success rates in chronically constipated children (OR 1.40 95% CI 0.72 to 2.73 at 24 months).In one small trial the adjunct of behaviour modification to laxative therapy was associated with a significant reduction in children's soiling episodes at both the three month (OR 0.14 CI 95% 0.04 to 0.51) and the 12 month assessment (OR 0.20 CI 95% 0.06 to 0.65).

AUTHORS' CONCLUSIONS

There is no evidence that biofeedback training adds any benefit to conventional treatment in the management of functional faecal incontinence in children. There was not enough evidence on which to assess the effects of biofeedback for the management of organic faecal incontinence. There is some evidence that behavioural interventions plus laxative therapy, rather than laxative therapy alone, improves continence in children with functional faecal incontinence associated with constipation.

Constipation in children: novel insight into epidemiology, pathophysiology and management

Constipation in children is a common health problem affecting 0.7% to 29.6% children across the world. Exact etiology for developing symptoms is not clear in children and the majority is considered to have functional constipation. Alteration of rectal and pelvic floor function through the brain-gut axis seems to play a crucial role in the etiology. The diagnosis is often a symptom-based clinical process. Recently developed Rome III diagnostic criteria looks promising, both in clinical and research fields. Laboratory investigations such as barium enema, colonoscopy, anorectal manometry and colonic transit studies are rarely indicated except in those who do not respond to standard management. Treatment of childhood constipation involves several facets including education and demystification, toilet training, rational use of laxatives for disimpaction and maintenance and regular follow-up. Surgical options should be considered only when medical therapy fails in long standing constipation. Since most of the management strategies of childhood constipation are not evidence-based, high-quality randomized controlled trials are required to assess the efficacy of currently available or newly emerging therapeutic options. Contrary to the common belief that children outgrow constipation as they grow up, a sizable percentage continue to have symptoms beyond puberty.

Current management strategies and therapeutic targets in chronic constipation

Constipated patients who are refractory to simple lifestyle interventions will usually resort to laxatives, whether prescribed or over the counter. Clinical trial evidence is scarce for older medications such as laxatives, especially with a condition as chronic and subjective as constipation. Newer polyethylene glycol-based laxatives have been investigated under rigorous clinical trial settings, but comparisons between different laxatives are not available. Newer prokinetic agents, targeting peristalsis, intestinal secretion and the colonic flora, have been developed for laxative refractory constipation. This review focuses on the evidence for each of these agents, and the relative indications for each of them.

Manometria anorretal em crianças com constipação intestinal crônica funcional refratária a tratamento

OBJETIVO: Descrever os resultados da manometria anorretal dos pacientes com constipação intestinal crônica funcional (CICF), refratária aos tratamentos habituais, quanto ao tônus esfincteriano, presença do reflexo inibitório retoanal (RIRA), capacidade de expulsão do balão intrarretal e comportamento durante manobra evacuatória. MÉTODOS: Estudo retrospectivo por meio de análise de prontuários médicos entre janeiro de 2003 e junho de 2007, avaliando-se 31 pacientes ambulatoriais com CICF refratária a tratamentos convencionais por manometria anorretal com cateter de quatro canais (processador MPX 816 e software Proctomaster 5.0, Dynamed). RESULTADOS: Dos 31 pacientes, 24 (77%) eram do sexo masculino. A idade média foi 8,9±2,6 anos. A média de pressão máxima fisiológica do canal anal foi 82±38mmHg. Dos 31 pacientes, 15 (48%) apresentaram esfíncter anal normotônico e 16 (52%), hipertônico. O RIRA esteve presente em todos os casos. A prova de expulsão do balão intrarretal foi positiva em 12/31pacientes, sendo 4/12 com esfíncter normotônico e 8/12 com esfíncter hipertônico (p=0,22). Anismo foi detectado em 6/15 pacientes com esfíncter normotônico (40%) e em 4/16 com esfíncter hipertônico (25%) (p=0,45). CONCLUSÕES: Houve predomínio de esfíncter anal normotônico nos casos de CICF refratária. Pouco mais de 1/3 dos pacientes conseguiram a expulsão do balão durante a prova evacuatória, independentemente da tonicidade do esfíncter anal e cerca de metade dos pacientes apresentavam anismo sem relação com a tonicidade do esfíncter anal. A manometria anorretal é apropriada para o estudo da fisiologia e dinâmica evacuatória e pode ser útil para orientar o tratamento.

Long-term prognosis for childhood constipation: clinical outcomes in adulthood

OBJECTIVES

This study examines long-term prognoses for children with constipation in adulthood and identifies prognostic factors associated with clinical outcomes.

METHODS

In a Dutch tertiary hospital, children (5-18 years of age) who were diagnosed as having functional constipation were eligible for inclusion. After a 6-week treatment protocol, prospective follow-up evaluations were conducted at 6 and 12 months and annually thereafter. Good clinical outcomes were defined as > or =3 bowel movements per week for > or =4 weeks, with < or =2 fecal incontinence episodes per month, irrespective of laxative use.

RESULTS

A total of 401 children (260 boys; median age: 8 years [interquartile range: 6-9 years]) were included, with a median follow-up period of 11 years (interquartile range: 9-13 years). The dropout rate during follow-up was 15%. Good clinical outcomes were achieved by 80% of patients at 16 years of age. Thereafter, this proportion remained constant at 75%. Poor clinical outcomes at adult age were associated with: older age at onset (odds ratio [OR]: 1.15 [95% confidence interval [CI]: 1.02-1.30]; P = .04), longer delay between onset and first visit to our outpatient clinic (OR: 1.24 [95% CI: 1.10-1.40]; P = .001), and lower defecation frequency at study entry (OR: 0.92 [95% CI: 0.84-1.00]; P = .03).

CONCLUSIONS

One-fourth of children with functional constipation continued to experience symptoms at adult age. Certain risk factors for poor clinical outcomes in adulthood were identified. Referral to a specialized clinic should be considered at an early stage for children who are unresponsive to first-line treatment.

A randomized controlled trial of enemas in combination with oral laxative therapy for children with chronic constipation

BACKGROUND & AIMS

After 5 years of intensive oral laxative use, up to 30% of constipated children still have an unsuccessful outcome. Children refractory to oral laxatives might benefit from regular rectal evacuation by enemas. This randomized controlled trial compared the effects of additional treatment with rectal enemas (intervention) with conventional treatment alone (oral laxatives, control) in severely constipated children.

METHODS

In a tertiary hospital in the Netherlands, 100 children, aged 8-18 years, with functional constipation for at least 2 years were randomly assigned to intervention or control groups. The control group received education, behavioral strategies, and oral laxatives. The intervention group was also given 3 rectal enemas/week, reduced by 1 enema/week every 3 months. Outcome measures were defecation and fecal incontinence frequency and overall success at 12, 26, 39, and 52 weeks. Overall success was defined as 3 or more defecations/week and less than 1 fecal incontinence episode/week, irrespective of laxative use.

RESULTS

Defecation frequency normalized in both groups but was significantly higher in the intervention group compared with controls at 26 and 52 weeks (5.6 vs 3.9/week, P = .02, and 5.3 vs 3.9/week, P = .02, respectively). There were no significant differences between groups in reduction of fecal incontinence episodes (P = .49) and overall success rates (P = .67). After 1 year of treatment, the overall success rate was 47.1% in the intervention group versus 36.1% in the control group.

CONCLUSIONS

There is no additional effect of enemas compared with oral laxatives alone as maintenance therapy for severely constipated children.

Children with constipation: what happens to them when they grow up?

Constipation and soiling are common complaints in childhood and often cause distress to the children and their parents. The treatment for these symptoms is oral and sometimes rectal laxatives or behavioural therapy. Until now, there have been few randomized controlled trials to evaluate the efficacy of the different treatment regimens. Moreover, there is a lack of information regarding what happens to these children with constipation when they grow up. A recent long-term follow-up study in The Netherlands showed that 30% of the children followed beyond puberty continued to have severe complaints of constipation such as a low defecation frequency and soiling. Long-lasting support and the development of improved therapeutic regimens are necessary to treat these difficult patients more effectively.

Role of anorectal manometry in children with severe constipation

OBJECTIVE

Constipation is one of the most frequent disorders of the digestive tract in children and it can be an important problem in paediatric and surgical practice. Most of the time, the cause is psychological or because of a slowing of colonic transit, but it can be a sign of organic gastrointestinal outlet obstruction. Some patients with chronic constipation are resistant to a medical approach and they present with a severe form of constipation that needs recurrent hospital admission. Anorectal manometry (ARM) is a noninvasive procedure and it helps to explain the mechanisms of defecation disorders. The aim of the present study was to evaluate the role of ARM in children with severe constipation.

METHOD

From October 2003 to October 2006, in the Paediatric Surgery Unit, 85 children - aged more than 1 year - with severe constipation were seen. The mean age was 5 years (range, 1-13). At presentation, every child had abdominal and rectal examination in order to identify abdominal distension or faecal masses. Bowel preparation with enemas was performed before ARM in patient with a rectal faecaloma. Myoelectric activity of the internal anal sphincter and resting anal tone was recorded; recto-anal inhibitory reflex (RAIR) was tested to exclude Hirschsprung's disease (HD). Anal tone was considered normal until 50 cm H(2)O. When the RAIR was absent, the patient underwent rectal suction biopsies (RSB) for histology and acetylcholinesterase histochemistry. In cases of normal or high anal tone with the RAIR present, the child had bowel cleaning, medical treatment, 2- and 6-month follow-up. Children with ineffective treatment at follow-up underwent RSB. In case of HD, a laparoscopic-assisted endorectal pull-through (ERPT) according to Georgeson's technique was performed.

RESULTS

Seventy per cent of the patients had bowel preparation before ARM. In four patients the ARM was impossible to assess because of crying. In 28 patients, the anal tone result was higher than 50 cm H(2)O and local treatment with anaesthetic agents was used for 8 weeks. Seventeen patients underwent RSB: 11 patients with RAIR absent/unclear, 4 noncooperative children and 2 patients with ineffective medical treatment at follow-up. HD was diagnosed in 2 patients and laparoscopic-assisted ERPT was performed. The remaining patients had good results at 6-month follow-up.

CONCLUSION

ARM is a noninvasive diagnostic tool to study the mechanism of defecation in children with constipation in order to prescribe the appropriate treatment. This procedure can be used in every child - aged more than 1 year - with severe constipation and assessment of the RAIR can select the cases for RSB.

Health-related quality of life in young adults with symptoms of constipation continuing from childhood into adulthood

BACKGROUND

Children with functional constipation report impaired Health-related Quality of Life (HRQoL) in relation to physical complaints and long duration of symptoms. In about one third of children with constipation, symptoms continue into adulthood. Knowledge on HRQoL in adults with constipation persisting from childhood is lacking.

OBJECTIVES

To assess HRQoL in adults with constipation from early childhood in comparison to that of their peers. Furthermore to gain insight into the specific social consequences related to continuing symptoms of constipation and/or fecal incontinence at adult age.

METHODS

One HRQoL questionnaire and one self-developed questionnaire focusing on specific consequences of symptoms of constipation continuing into adulthood were administrated to 182 adults with a history of childhood constipation. Successful clinical outcome was defined as a defecation frequency three or more times per week with less than two episodes of fecal incontinence per month, irrespective of laxative use. HRQoL of both adults with unsuccessful and successful clinical outcome were compared to a control group of 361 peers from the general Dutch population.

RESULTS

No differences in HRQoL were found between the whole study population and healthy peers, nor between adults with successful clinical outcome (n = 139) and the control group. Adults with an unsuccessful clinical outcome (n = 43) reported significantly lower HRQoL compared to the control group with respect to scores on bodily pain (mean +/- SD 77.4 +/- 19.6 versus 85.7 +/- 19.5, p = 0.01) and general health (67.6 +/- 18.8 versus 74.0 +/- 18.1, p = 0.04). Adults with an unsuccessful clinical outcome reported difficulties with social contact and intimacy (20% and 12.5%, respectively), related to their current symptoms. Current therapy in these adults was more often self-administered treatment (e.g. diet modifications) (60.4%) than laxatives (20.9%).

CONCLUSION

Overall, young adults with constipation in childhood report a good quality of life, as HRQoL of adults with successful clinical outcome was comparable to that of their peers. However, when childhood constipation continues into adulthood, it influences HRQoL negatively with social consequences in 20% of these adults.

Neuroimmune interaction and anorectal motility in children with food allergy-related chronic constipation

OBJECTIVES

Food allergy is thought to trigger functional constipation in children but the underlying mechanisms are still unknown. Mast cells (MCs) and their relationship with nerve fibers (NFs) in the rectal mucosa, as well as anorectal motility, were studied in children with refractory chronic constipation before and after an elimination diet for cow's milk, egg, and soy proteins.

METHODS

Thirty-three children (range: 1-10.8 years) underwent anorectal manometry and suction rectal biopsy before and after 8 weeks of oligoantigenic diet. MCs and NFs were identified immunohistochemically. Quantification of MCs (%MC/area) and MCs within 10 microm of NFs (%MC-NF/area) was performed by computer-assisted analysis.

RESULTS

Eighteen children responded to the diet (R-group) and fifteen did not (the NR-group). At baseline there was a significant difference in anal resting pressure (ARP; mm Hg), percentage of relaxation (%R), and residual pressure (RP; mm Hg) of anal canal during rectal distension between the R-group (66+/-4.1, 84.3+/-2.8, 10.4+/-2.3, respectively) and the NR-group (49+/-5, 92.2+/-1.7, 4.8+/-1.7, respectively; P<0.05). After the diet, significant changes in ARP, RP, and %R were observed only in the R-group (44+/-3.7, 93.7+/-1.5, 3.8+/-1.2, respectively; P<0.05). At baseline, the R-group showed an increase in %MC/area (8.3+/-0.7) and %MC-NF/area (5.2+/-2.6) with respect to the NR-group (5.1+/-0.5 and 2.3+/-0.4, respectively; P<0.05). After the diet, only the R-group showed a significant reduction of %MC/area and %MC-NF/area (4.4+/-0.5 and 2.2+/-0.4, respectively; P<0.001). Both ARP and RP significantly correlated with %MC/area and %MC-NF/area; %R showed a significant inverse correlation with both %MC/area and %MC-NF/area.

CONCLUSIONS

In children with food allergy-related chronic constipation, an increase in both rectal MC density and spatial interactions between MCs and NFs correlates with anal motor abnormalities. These variables are significantly affected by the diet.

Constipation is associated with spina bifida occulta in children

BACKGROUND & AIMS

Spina bifida occulta (SBO) is a common developmental variant. The aim of this study was to re-examine the possible association between SBO and constipation in children.

METHODS

A total of 113 children with constipation underwent plain abdominal radiography, anorectal manometry, neurophysiologic study, electromyography testing, and colonic transit study. Eighty-six were diagnosed with functional constipation (FC) and 27 were diagnosed with nonretentive fecal incontinence (NRFI). The incidence of SBO in these children was compared with 226 sex- and age-matched controls. Twenty-four SBO children with either FC or NRFI also underwent individualized biofeedback training and electric stimulation therapy based on the investigation results.

RESULTS

The incidence of SBO in the FC and NRFI groups was 47.7% and 77.8%, respectively. Statistically, this is significantly higher than that of the control group (chi-square, 23.9%; P < .05). Compared with the FC or NRFI children without SBO, the FC and NRFI children with SBO had decreased vector volumes and electromyography amplitudes, increased rectal sensory thresholds, and prolonged latency of pudendo-anal reflex. All 24 children who underwent individualized biofeedback training and electrical stimulation treatment had sustained symptomatic improvement with less straining, fewer incomplete bowel movements, and less abdominal pain. The recovery rate was 79.2% (19 of 24).

CONCLUSIONS

Constipation in children is associated with increased incidence of SBO. Individualized biofeedback combined with electrical stimulation improves both the symptoms and the objective anorectal function measurements.

Psychosocial co-morbidity affects treatment outcome in children with fecal incontinence

Fecal incontinence is a common disorder in children. Many children with fecal incontinence have psychosocial co-morbidity. In this study, the effect of psychosocial co-morbidity on the treatment outcome of children with fecal incontinence was evaluated. One hundred and fifty children with fecal incontinence were treated in a multidisciplinary program. All children had been treated unsuccessfully for at least one year before entering the program. The treatment consisted of laxative treatment, psychosocial interventions, and biofeedback training. Psychosocial co-morbidity was classified according to the Diagnostic and Statistical Manual of Mental Disorders, 4th Edition (DSM-IV). One hundred and forty-one children were completely analyzed (102 boys, mean age 9.6 (range 6.5-16.5) years). Of these, 31 (22%) children had fecal incontinence without constipation and 110 (78%) children had fecal incontinence associated with constipation. In 95% of children, at least one psychosocial co-morbidity was present. Treatment was successful at 12 months in 69% of patients. Treatment was less successful in children with attention deficit hyperactivity disorder (ADHD), in children with parent-child relational problems, and in mentally retarded children. The results indicate that the early assessment and treatment of psychosocial co-morbidity might improve treatment response in children with fecal incontinence. Children with fecal incontinence are treated less successfully in the first year if they have ADHD, parent-child relational problems, or mental retardation. Psychosocial evaluation and the early assessment and treatment of psychosocial co-morbidity is indicated in order to improve response rate. Family counseling--aimed at improving parent-child relations--should be an integral part of a multidisciplinary treatment program for fecal incontinence.

Behavioral therapy for childhood constipation: a randomized, controlled trial

OBJECTIVE

It has been suggested that the addition of behavioral interventions to laxative therapy improves continence in children with functional fecal incontinence associated with constipation. Our aim was to evaluate the clinical effectiveness of behavioral therapy with laxatives compared with conventional treatment in treating functional constipation in childhood.

PATIENTS AND METHODS

In this randomized, controlled trial conducted in a tertiary hospital in The Netherlands, 134 children aged 4 to 18 years with functional constipation were randomly assigned to 22 weeks (12 visits) of either behavioral therapy or conventional treatment. Primary outcomes were defecation frequency, fecal incontinence frequency, and success rate. Success was defined as defecation frequency of > or = 3 times per week and fecal incontinence frequency of < or = 1 times per 2 weeks irrespective of laxative use. Secondary outcomes were stool-withholding behavior and behavior problems. Outcomes were evaluated at the end of treatment and at 6-months follow-up. All of the analyses were done by intention to treat.

RESULTS

Defecation frequency was significantly higher for conventional treatment. Fecal incontinence frequency showed no difference between treatments. After 22 weeks, success rates did not differ between conventional treatment and behavioral therapy (respectively, 62.3% and 51.5%), nor did it differ at 6 months of follow-up (respectively, 57.3% and 42.3%). The proportion of children withholding stools was not different between interventions. At follow-up, the proportion of children with behavior problems was significantly smaller for behavioral therapy (11.7% vs 29.2%).

CONCLUSION

Behavioral therapy with laxatives has no advantage over conventional treatment in treating childhood constipation. However, when behavior problems are present, behavioral therapy or referral to mental health services should be considered.

Referral for anorectal function evaluation is indicated in 65% and beneficial in 92% of patients

AIM: To determine the indicated referrals to a tertiary centre for patients with anorectal symptoms, the effect of the advised treatment and the discomfort of the tests.

METHODS: In a retrospective study, patients referred for anorectal function evaluation (AFE) between May 2004 and October 2006 were sent a questionnaire, as were the doctors who referred them. AFE consisted of anal manometry, rectal compliance measurement and anal endosonography. An indicated referral was defined as needing AFE to establish a diagnosis with clinical consequence (fecal incontinence without diarrhea, 3^rd degree anal sphincter rupture, congenital anorectal disorder, inflammatory bowel disease with anorectal complaints and preoperative in patients for re-anastomosis or enterostoma, anal fissure, fistula or constipation). Anal ultrasound is always indicated in patients with fistula, anal manometry and rectal compliance when impaired continence reserve is suspected. The therapeutic effect was noted as improvement, no improvement but reassurance, and deterioration.

RESULTS: From the 216 patients referred, 167 (78%) returned the questionnaire. The referrals were indicated in 65%. Of these, 80% followed the proposed advice. Improvement was achieved in 35% and a reassurance in 57% of the patients, no difference existed between patient groups. On a VAS scale (1 to 10) symptoms improved from 4.0 to 7.2. Most patients reported no or little discomfort with AFE.

CONCLUSION: Referral for AFE was indicated in 65%. Beneficial effect was seen in 92%: 35% improved and 57% was reassured. Advice was followed in 80%. Better instruction about indication for AFE referral is warranted.

Chronic childhood constipation: a review of the literature and the introduction of a protocolized behavioral intervention program

OBJECTIVE

To release a newly protocolized behavioral intervention program for children with chronic constipation aged 4-18 years with guidance from literature about underlying theories from which the treatment techniques follow.

METHODS

Articles until July 2006 were identified through electronic searches in Medline, PsychInfo and Picarta. There was no limit placed on the time periods searched. Following keywords were used: constipation, encopresis, fecal incontinence, psychotherapy, emotions, randomized controlled trials, parent-child relations, parents, family, psychology, behavioral, behavioral problems, psychopathology, toilet, social, psychosocial, pain, retentive posturing, stool withholding, stool toileting refusal, shame, stress, anxiety. A filter was used to select literature referring to children 0-18 years old. Key constructs and content of sessions for a protocolized behavioral intervention program are derived from literature.

RESULTS

Seventy-one articles on chronic childhood constipation are critically reviewed and categorized into sections on epidemiology, symptomatology, etiology and consequences, treatment and effectivity, and follow-up on chronic childhood constipation. This is followed by an extensive description of our protocolized behavioral intervention program.

CONCLUSION

This is the first article on childhood constipation presenting a full and transparent description of a behavioral intervention program embedded in literature. In addition, a theoretical framework is provided that can serve as a trial paradigm to evaluate intervention effectiveness.

PRACTICE IMPLICATIONS

This article can serve as an extensive guideline in routine practice to treat chronically constipated children. By releasing our protocolized behavioral intervention program and by offering a theoretical framework we expect to provide a good opportunity to evaluate clinical effectivity by both randomized controlled trials and qualitative research methods. Findings will contribute to the implementation of an effective treatment for chronic constipation in childhood.

Darmentleerung, Sauberkeitsentwicklung bei Kindern und ihre Störungen (Obstipation und Enkopresis)

Zusammenfassung. Verstopfung und Stuhlinkontinenz bei Kindern stellen für die Betroffenen und deren Familien eine schwere Belastung dar. In den meisten Fällen liegen funktionelle Störungen ohne organische Erkrankungen zugrunde. Trotzdem muss bei jedem Kind eine zielgerichtete somatische Diagnostik erfolgen. Rein psychische Ursachen für Obstipation und Inkontinenz sind eher selten. Nach Eingrenzen der Diagnose kann durch verschiedene Therapieansätze eine Besserung der Symptomatik erfolgen. Neben medikamentösen und diätetischen Maßnahmen stehen verhaltenstherapeutische Ansätze im Vordergrund. Der vorliegende Text gibt einen Überblick über den aktuellen Stand der wissenschaftlichen Erkenntnisse zu Kontinenzentwicklung, Physiologie und Pathophysiologie der Darmentleerung sowie Diagnostik und Behandlung von Obstipation und Enkopresis aus pädiatrisch-gastroenterologischer Sicht.

Behavioural and cognitive interventions with or without other treatments for the management of faecal incontinence in children

BACKGROUND

Faecal incontinence is a common and potentially distressing disorder of childhood.

OBJECTIVES

To assess the effects of behavioural and/or cognitive interventions for the management of faecal incontinence in children.

SEARCH STRATEGY

We searched the Cochrane Incontinence Group Specialised Trials Register (searched 1 February 2006).

SELECTION CRITERIA

Randomised and quasi-randomised trials of behavioural and/or cognitive interventions with or without other treatments for the management of faecal incontinence in children.

DATA COLLECTION AND ANALYSIS

Reviewers selected studies from the literature, assessed study quality, and extracted data. Data were combined in a meta-analysis when appropriate.

MAIN RESULTS

Eighteen randomised trials with a total of 1168 children met the inclusion criteria. Sample sizes were generally small. All studies but one investigated children with functional faecal incontinence. Interventions varied amongst trials and few outcomes were shared by trials addressing the same comparisons. Combined results of nine trials showed higher rather than lower rates of persisting symptoms of faecal incontinence up to 12 months when biofeedback was added to conventional treatment (OR 1.11 CI 95% 0.78 to 1.58). This result was consistent with that of two trials with longer follow-up (OR 1.31 CI 95% 0.80 to 2.15). In one trial the adjunct of anorectal manometry to conventional treatment did not result in higher success rates in chronically constipated children (OR 1.40 95% CI 0.72 to 2.73 at 24 months). In one small trial the adjunct of behaviour modification to laxative therapy was associated with a significant reduction in children's soiling episodes at both the three month (OR 0.14 CI 95% 0.04 to 0.51) and the 12 month assessment (OR 0.20 CI 95% 0.06 to 0.65).

AUTHORS' CONCLUSIONS

There is no evidence that biofeedback training adds any benefit to conventional treatment in the management of functional faecal incontinence in children. There was not enough evidence on which to assess the effects of biofeedback for the management of organic faecal incontinence. There is some evidence that behavioural interventions plus laxative therapy, rather than laxative therapy alone, improves continence in children with functional faecal incontinence associated with constipation.

Estreñimiento funcional: estudio prospectivo y respuesta al tratamiento

OBJECTIVE

To assess the prevalence of functional constipation (FC) with and without encopresis, the factors involved in its onset, and treatment response.

PATIENTS AND METHODS

A prospective study of 62 children was performed using a standard questionnaire (onset-age, regular toilet use, encopresis, complications, dietary habits and environmental and psychological factors) and physical and anthropometric assessment. FC was defined as a stool frequency of less than 3 bowel movements/week, with passage of large or scybalous stools, with or without 2 or more soiling episodes per week, without underlying disease. Treatment included demystification, behavioral modification and drugs (mineral oil and senna). Each child was periodically re-evaluated, and treatment was considered successful when the defecation rate was 3 or more bowel movements/week, discomfort was absent, and fecal soiling frequency was 2 or fewer episodes/ month.

RESULTS AND CONCLUSIONS

FC accounted for 13 % of all first consultations (60 % boys, 40 % girls; mean age at diagnosis 6.1 years). The most frequent manifestations were painful defecation (60 %), rectorrhagia (42 %), obstructive episodes (34 %) and anal fissure or hemorrhoids (17 %); 19 patients (31 %) had encopresis. Nutritional assessment revealed that 84 % of the patients was well nourished and 16 % was overweight. Fiber intake was deficient in more than 60 %. Sixteen (26 %) patients underwent successful relief of impaction with senna (20-30 mg/dose) combined with mineral oil. Maintenance treatment included mineral oil (15-30 ml/day) and senna at the minimum effective dose (5-15 mg/day). Satisfactory results were achieved 1 month later in 32 % of the children, 3-6 months later in 71 %, and 6-12 months later in 85 %; successful response was closely related to regular toilet habits, dietary modification and a shift in the family's attitude.

Effects of biofeedback training by EMG on patients with chronic functional constipation

AIM: To study characteristics of anorectal pressure, EMG activity and effect of biofeedback training system on patient with chronic functional constipation (CFC).

METHODS: Anorectal manometry was carried out in 144 cases of CFC by a monitor system (liquid-phase type) and Biolab dynamics parameter before and after the biofeedback training. 20 healthy individuals were taken as control.

RESULTS: Compared with controls, CFC patients showed slightly lower anal quiesent pressure (P>0.05), lower anorectal sphincteric squeezing pressure (15.7±1.4 vs 12.7± 1.4) (P < 0.01), higher rectal defection volume thresholds and higher rectal maximum talerable volume thresholds (12±6.2 vs 14.9±6.6; 29.3±6.8 vs 36.0±7.3) (P < 0.01; P < 0.01); EMG assessments showed that 100% patients with CFC had the contradictory movement between the pelvic floor muscle (PFM) and abdominal anterior oblique muscle (AAOM). The movement extent of the PFM rose from 5.3±2.8 to 10.2±2.8 under quiet state (P < 0.01), and AAOM reduced from 34.4±5.2 to 30.8±4.9 (P < 0.01); All the abnormalities significantly improved with Orion PC/ 12 m EMG biofeedback training therapy. After biofeedback training therapy, symptoms of CFC patients were improved with efficient rate of 84.03%; With increase of the treatment time and shortenning of the interval and assistant training, the curative efficacy rose and the recurrence rate reduced (78.8% vs 91.7%; 69.2% vs 92.8%) (P < 0.05; P < 0.05).

CONCLUSION: CFC patients have abnormal anorectal pressure, sensation threshold and unusual anus electric activities. Biofeedback training therapy can improve the above-mentioned indexes and is effective in 84.03% of the patients. The relatively intensive long-time training can improve the curative rate in a short period, and family assistant training can reduce the recurrance rate of the disease.

N/A

N/A

Functional fecal retention with encopresis in childhood

OBJECTIVES

The most common cause of encopresis in children is functional fecal retention (FFR). An international working team suggested that FFR be defined by the following criteria: a history of >12 weeks of passage of <2 large-diameter bowel movements (BMs) per week, retentive posturing, and accompanying symptoms, such as fecal soiling. These criteria are usually referred to as the ROME II criteria. The aims of this study were to evaluate how well the ROME II criteria identify children with encopresis; to compare these patients to those identified as having FFR by historical symptoms or physical examination; to determine whether 1-year treatment outcome varied depending on which definition for FFR was used; and to suggest improvements to the ROME II criteria, if necessary.

METHODS

Data were reviewed from the history and physical examination of 213 children with encopresis. One-year outcomes identified were failure, successful treatment, or full recovery.

RESULTS

Only 88 (41%) of the patients with encopresis fit the ROME II criteria for FFR, whereas 181 (85%) had symptoms of FFR by history or physical examination. Thirty-two (15%) patients did not fit criteria for FFR, but only 6 (3%) appeared to have nonretentive fecal soiling. Rates of successful treatment (50%) and recovery (39%) were not significantly different in the two groups.

CONCLUSIONS

The ROME II criteria for FFR are too restrictive and do not identify many children with encopresis who have symptoms of FFR. The author suggests that the ROME II criteria for FFR could be improved by including the following additional items: a history of BMs that obstruct the toilet, a history of chronic abdominal pain relieved by enemas or laxatives, and the presence of an abdominal fecal mass or rectal fecal mass.

Childhood constipation: longitudinal follow-up beyond puberty

BACKGROUND & AIMS

Sparse data exist about the prognosis of childhood constipation and its possible persistence into adulthood.

METHODS

A total of 418 constipated patients older than 5 years at intake (279 boys; median age, 8.0 yr) participated in studies evaluating therapeutic modalities for constipation. All children subsequently were enrolled in this follow-up study with prospective data collection after an initial 6-week intensive treatment protocol, at 6 months, and thereafter annually, using a standardized questionnaire.

RESULTS

Follow-up was obtained in more than 95% of the children. The median duration of the follow-up period was 5 years (range, 1-8 yr). The cumulative percentage of children who were treated successfully during follow-up was 60% at 1 year, increasing to 80% at 8 years. Successful treatment was more frequent in children without encopresis and in children with an age of onset of defecation difficulty older than 4 years. In the group of children treated successfully, 50% experienced at least one period of relapse. Relapses occurred more frequently in boys than in girls (relative risk 1.73; 95% confidence interval, 1.15-2.62). In the subset of children aged 16 years and older, constipation still was present in 30%.

CONCLUSIONS

After intensive initial medical and behavioral treatment, 60% of all children referred to a tertiary medical center for chronic constipation were treated successfully at 1 year of follow-up. One third of the children followed-up beyond puberty continued to have severe complaints of constipation. This finding contradicts the general belief that childhood constipation gradually disappears before or during puberty.

Encopresis

A careful history and physical examination will help to differentiate between encopresis with or without constipation and fecal incontinence caused by anatomic or organic disease. Most children with encopresis with or without functional constipation require no or minimal laboratory workup. Successful treatment of encopresis requires a combination of parent and child education, behavioral intervention, medical therapy, and long-term compliance with the treatment regimen. The conventional treatment approach consists of behavior modification and laxative for children with encopresis with constipation and behavior modification alone for the few children with encopresis without constipation. Almost every patient will experience dramatic improvement in encopresis. Recovery rates are 30% to 50% after 1 year and 48% to 75% after 5 years.