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.     

Is encopresis always the result of constipation?

Encopresis is often the result of chronic constipation in the majority of paediatric patients. In clinical practice, however, encopresis is also seen without constipation and it is unknown whether these two clinical variants are based on similar or different pathophysiological mechanisms, requiring different therapeutic approaches. We analysed clinical symptoms, colonic transit time (CTT), orocaecal transit time (OCTT), anorectal manometric profiles, and behavioural scores. Patients were divided into two groups, one consisted of 111 children with paediatric constipation, and another group of 50 children with encopresis and/or soiling without constipation. Significant clinical differences in children with encopresis/soiling existed compared with children with paediatric constipation regarding: bowel movements per week, the number of daytime soiling episodes, the presence of night time soiling, the presence and number of encopresis episodes, normal stools, pain during defecation, abdominal pain, and good appetite. Total and segmental CTT were significantly prolonged in paediatric constipation compared with encopresis/soiling, 62.4 (3.6-384) and 40.2 (10.8-104.4) hours, respectively. No significant differences were found in OCTT. Among the two groups, all manometric parameters were comparable, except for a significantly higher threshold of sensation in children with paediatric constipation. The defecation dynamics were abnormal in 59% and 46% in paediatric constipation and encopresis/soiling, respectively, and were significantly different from controls. Using the child behaviour checklist no significant differences were found when comparing children with paediatric constipation and encopresis/soiling, while both patient groups differed significantly from controls. In conclusion, our findings support the concept of the existence of encopresis as a distinct entity in children with defecation disorders. Identification of such children is based on clinical symptoms, that is, normal defecation frequency, absence of abdominal or rectal palpable mass, in combination with normal marker studies and normal anal manometric threshold of sensation, Thus, encopresis is not always the result of constipation and can be the only clinical presentation of a defecation disorder.     

Long-term efficacy of polyethylene glycol 3350 for the treatment of chronic constipation in children with and without encopresis

Seventy-four children (43 with chronic constipation, 31 with constipation and encopresis) treated with polyethylene glycol 3350 (PEG) for longer than 3 months were studied to assess long-term efficacy. The mean duration of PEG therapy was 8.4 months (range, 3-30). Weekly stool frequency, stool consistency, and symptoms associated with constipation improved significantly with PEG therapy in all 74 patients. In 31 children with encopresis, soiling ceased completely in 16 patients and frequency of soiling decreased significantly in all others. The average effective long-term dose of PEG was 0.7 g/kg/day. Long-term PEG therapy is effective for the treatment of chronic constipation with and without encopresis in children.     

Early constipation and toilet training in children with encopresis

OBJECTIVE: To evaluate the frequency of predisposing factors for encopresis before and during toilet training, comparing children with primary and secondary encopresis. METHODS: In this retrospective study, questionnaires from the initial evaluation at an encopresis clinic at a tertiary care pediatric hospital were reviewed for the presence or absence of factors in the first 2 years of life, for toilet training practices, and for disruptive events during the training process. Children younger than 48 months or those with organic defecation disorders were excluded. RESULTS: In 411 children with encopresis, the reported frequency of predisposing factors included constipation in 35%, and previous treatment for constipation in 24%. Toilet training was initiated before age 2 years in 26% and after age 3 years in 14%. Interruption of toilet training and punishment were seen more in primary encopresis than in secondary encopresis (50% versus 23%; P < 0.05) and (52% versus 26%; P < 0.05) respectively. Constipation (30% versus 18%; P < 0.05) and abdominal pain (23% versus 9%; P <0.0:5) during toilet training were more common in primary encopresis as was fear of the toilet (47% versus 10%; P < 0.05). CONCLUSIONS: In children with encopresis, early difficult defecation, previous treatment for constipation, and early initiation of toilet training were less common than expected. Children with primary encopresis did not have an increased incidence of early constipation or invasive treatments compared with those with secondary encopresis. However, children with primary encopresis did have more difficult and disruptive toilet training experiences.     

Clinical approach to fecal soiling in children

Fecal soiling is common in childhood and can be caused by stool toileting refusal, fecal incontinence due to organic disease, or encopresis due to functional constipation. Anatomical, neurologic, and inflammatory causes for fecal soiling are ruled out by history and physical examination and, if necessary, by anorectal manometry, barium enema, and rectal biopsy. The initial treatment suggestion for children with stool toileting refusal is to put the child back into pull-ups or diapers. Most children with fecal soiling due to organic disease continue with some degree of incontinence despite optimal medical management. Antegrade enema administration helps those with severe fecal incontinence due to organic causes who do not respond to medical management. Successful treatment of constipation and encopresis requires a combination of medical therapy, nutritional intervention, behavioral intervention, and long-term compliance with laxative use. The combined treatment approach improves the constipation and encopresis in all patients who comply with the treatment program. In some children, cow's milk protein intolerance may be the cause. In them, cow's milk protein needs to be eliminated.     

No-enema therapy for idiopathic constipation and encopresis.

Idiopathic constipation and encopresis of childhood are thought to occur when children volitionally withhold stool. Withholding may be prompted by social pressures or by episodes of painful defecation. Repetitive withholding may result in colonic dilatation and colorectal dysfunction. Therapy involves removal of impacted stool, stool softening, and behavioral therapy. The use of enemas in this therapy is widespread but may be counterproductive. A retrospective review of patients treated without enemas revealed 45 patients whose course could be followed for six months. Ninety-eight percent of these had successful initial cleanouts without enemas; 94% had continued success at six months. These results, comparable with other treatment programs, demonstrate that therapy without enemas is a reasonable alternative in the treatment of childhood constipation and encopresis.     

Polyethylene glycol without electrolytes for children with constipation and encopresis

BACKGROUND: Children with functional constipation and encopresis benefit from behavior modification and from long-term laxative medication. Polyethylene glycol without electrolytes has become the first option for many pediatric gastroenterologists. METHODS: Twenty-eight children treated with polyethylene glycol without electrolytes were compared with 21 children treated with milk of magnesia to evaluate the efficiency, acceptability, side effects, and treatment dosage of polyethylene glycol in long-term treatment of functional constipation and encopresis. Children were rated as "doing well," "improved," or "not doing well," depending on resolution of constipation and encopresis. RESULTS: At the 1-, 3-, 6-, and 12-month follow-ups, bowel movement frequency increased and soiling frequency decreased significantly in both groups. At the 1-month follow-up, children on polyethylene glycol were soiling more frequently (P < 0.01) and fewer were improved (P < 0.01). At the 3- and 6-month follow-ups, both groups had similarly improved. At the 12-month visit, 61% of children on polyethylene glycol and 67% of children on milk of magnesia were doing well. Children on polyethylene glycol soiled more frequently (P < 0.01). None refused polyethylene glycol, but 33% refused to take milk of magnesia. The mean initial treatment dosage of polyethylene glycol was 0.6 +/- 0.2 g/kg daily. Polyethylene glycol had no taste, and no loss of efficacy occurred. Polyethylene glycol did not cause clinically significant side effects. CONCLUSIONS: Polyethylene glycol without electrolytes is an alternative for long-term management of children with constipation and encopresis.     

Defaecation disorders in children,colonic transit time versus the Barr-score

It is still unclear how to evaluate the existence of faecal retention or impaction in children with defaecation disorders. To objectivate the presence and degree of constipation we measured segmental and total colonic transit times (CTT) using radio-opaque markers in 211 constipated children. On clinical grounds, patients (median age 8 years (5–14 years)) could be divided into three groups; constipation, isolated encopresis/soiling and recurrent abdominal pain. Barr-scores, a method for assessment of stool retention using plain abdominal radiographs, were obtained in the first 101 patients, for comparison with CTT measurements as to the clinical outcome. Of the children with constipation, 48% showed significantly prolonged total and segmental CTT. Surprisingly, 91% and 91%, respectively, of the encopresis/soiling and recurrent abdominal pain children had a total CTT within normal limits, suggesting that no motility disorder was present. Prolonged CTT through all segments, known as colonic inertia, was found in the constipation group only. Based on significant differences in clinical presentation, CTT and colonic transit patterns, encopresis/soiling children formed a separate entity among children with defaecation disorders, compared to children with constipation. Recurrent abdominal pain in children was in the great majority, not related to constipation. Barr-scores were poorly reproducible, with low inter-and intra-observer reliability. This is the first study which shows that clinical differences in constipated children are associated with different colonic transit patterns. The usefulness of CTT measurements lies in the objectivation of complaints and the discrimination of certain transit patterns.Conclusion Abdominal radiographs, even when assessed with the Barr-score proved unreliable in diagnosing constipation. Marker studies should be performed in the second stage of evaluation after failure of initial therapy.     

Factors responsible for persistence of childhood constipation

In this study 56% of children with chronic constipation and encopresis were unable to defecate rectal balloons. Most of them had an abnormal contraction of the external and sphincter during defecation trials. Eighty-six percent were still unable to defecate balloons 1 year later after having complied with a conventional treatment program. Only 14% of patients unable to defecate balloons had recovered by 1 year, whereas 64% of patients able to had recovered (p less than 0.02). Only 13% of patients unable to relax the external sphincter had recovered by 1 year, whereas 70% of those able to do so had recovered (p less than 0.01). In addition, none of the patients with an abdominal fecal mass present during the initial examination independent of ability or inability to defecate balloons had recovered (p less than 0.001). This study shows that abnormal defecation dynamics and the severity of constipation are predictors for persistence of chronic constipation and encopresis.     

Management of Constipation and Encopresis in Children

Constipation is a common problem in primary care. Nurse practitioners should be able to diagnose and treat constipation appropriately and to recognize which children require referral to a gastroenterologist. Referral to a gastroenterologist is necessary for the child with simple constipation or encopresis fails to respond to treatment, an organic etiology is suspected, or complex management is required.     

Encopresis

Encopresis is fecal soiling associated with functional constipation in a child. Constipation and encopresis are common problems in children. Encopresis is most common between ages 3 and 7 years. Infants and pre-school children present with a history of constipation and withholding maneuvers. The school-age child may have constipation and fecal soiling for some time prior to detection. In some children encopresis is associated with enuresis and urinary tract infection. Family education is the essential first step in management, followed by disimpaction of stool and complete evacuation of the rectum. Reaccumulation of stool should be prevented by appropriate use of laxatives and stool softeners. This is followed by a gradual weaning of the laxative regimen and instituting toilet training. Relapses may occur. Up to 50–60% of children achieve acceptable bowel control, free of soiling, within a year.     

Safety of polyethylene glycol 3350 for the treatment of chronic constipation in children

OBJECTIVES: To assess the clinical and biochemical safety profile of long-term polyethylene glycol 3350 (PEG) therapy in children with chronic constipation and to assess pediatric patient acceptance of PEG therapy. DESIGN: Prospective observational study. SETTING: Pediatric clinics at a referral center.Patients Eighty-three children (44 with chronic constipation, 39 with constipation and encopresis) receiving PEG therapy for more than 3 months. MAIN OUTCOME MEASURES: Clinical adverse effects related to PEG therapy and acceptance and compliance with PEG therapy. Serum electrolyte levels, osmolality, albumin levels, and liver and renal function test results were measured. RESULTS: At the time of evaluation, the mean duration of PEG therapy was 8.7 months, and the mean PEG dose was 0.75 g/kg daily. There were no major clinical adverse effects. All blood test results were normal, except for transient minimal alanine aminotransferase elevation unrelated to therapy in 9 patients. All children preferred PEG to previously used laxatives, and daily compliance was measured as good in 90% of children. CONCLUSIONS: Long-term PEG therapy is safe and is well accepted by children with chronic constipation with and without encopresis.     

Encopresis: long-term clinical outcome of 67 cases

In this study we attempted to investigate the outcome of encopresis and to determine factors affecting prognosis. The sample consisted of 52 boys (77.6%) and 15 girls (22.4%) diagnosed as encopresis according to DSM IV diagnostic criteria. These patients were evaluated six years after their initial examination in the Department of Child Psychiatry. Clinical and demographical data were compared between initial and follow-up interviews and between patients with complete recovery and others. Fifty-six patients (83.6%) recovered completely and 11 (16.4%) continued to be encopretic after six years. Good school performance (p<0.005), high levels of parental education (p<0.005) and absence of constipation (p<0.05) were associated with favorable outcome. In addition, secondary encopretics who were diagnosed within a year from onset of the symptom recovered significantly earlier (p<0.001). Encopresis is a chronic disorder and complete recovery rates tend to increase with time. Families and primary health care providers should be informed about the treatment possibilities of encopresis for early intervention.     

Cisapride for the treatment of constipation in children: A double-blind study

OBJECTIVE: To determine whether cisapride is effective in the treatment of children with constipation. STUDY DESIGN: Double-blind, placebo-controlled study in which children with chronic constipation were randomly assigned to treatment with cisapride or placebo for 12 weeks. RESULTS: Forty children were enrolled, and 36 completed the therapy. Treatment successes occurred in 13 of 17 (76%) subjects in the cisapride group and 8 of 19 (37%) subjects in the placebo group (P <.03). The odds ratio for response after cisapride administration was 8.2 times higher (95% CI 1.3 to 49.4). During cisapride therapy, there was a significant improvement in number of spontaneous bowel movements per week (from 0.9 +/- 0.1 to 4.1 +/- 1.1), and there was a significant decrease in number of fecal soiling episodes per day (1.8 +/- 0.5 to 0.08 +/- 0.4), percent with encopresis (82% vs 23%), number of laxative doses per week (from 10.3 +/- 2.6 to 0.8 +/- 0.6), percent using laxatives (77% to 24%), and total gastrointestinal transit time (from 115.0 +/- 3.7 hours to 77.0 +/- 11.1 hours). With placebo, there were no significant changes in the number of spontaneous bowel movements (from 1.0 +/- 0.8 to 2.2 +/- 0.6), percent with encopresis (74% vs 47%), or total gastrointestinal transit time (from 112.5 +/- 4.9 hours to 95.4 +/- 9.8 hours); but there was a significant decrease in number of fecal soiling episodes per day (from 1.3 +/- 0.4 to 0.4 +/- 0.2) and number of laxative doses used per week (from 11.5 +/- 2.9 to 2.05 +/- 0.7). The final number of spontaneous bowel movements, fecal soiling episodes, laxatives used, or percent patients with encopresis was not different when patients receiving cisapride were compared with those receiving placebo. CONCLUSION: Cisapride was effective in the treatment of children with constipation.     

Late study results following megacolon operations

The basic pathophysiologic disturbance in Hirschsprung's disease is a functional obstruction caused by defective intramural nerve supply and by internal anal sphincter achalasia. Therapy consists in resecting the dysganglionic bowel segment. In each case however an aganglionic segment of different length and an internal analsphincter with a different degree of achalasia remain in situ. Therefore the postoperative results are dependant on an equilibrium between the proximal normal innervated colon and the length and function of the remaining aganglionic and achalic parts of the rectum and anal canal. In about one third of all patients with Hirschsprung's disease disturbances of this equilibrium postoperatively lead to enterocolitis, encopresis, or chronic constipation. Five years later however the authors could observe enterocolitis in only 7.3% chronic constipation in 9.5% and encopresis in 13.9% of their operated patients. With increasing time after operation there is a growing tendency towards the spontaneous regeneration. Therefore, the prognosis of Hirschsprung's disease is very good: about 90% of all cases can be cured.     

Lack of benefit of laxatives as adjunctive therapy for functional nonretentive fecal soiling in children

OBJECTIVES: To determine whether the combination of laxative treatment and biofeedback therapy (BF) is more effective for management of functional nonretentive fecal soiling than biofeedback therapy alone. STUDY DESIGN: In a prospective nonblinded study, 48 children were randomized in 2 groups: treatment with oral laxatives (LAX) and 5 sessions of BF (BF + LAX) or 5 sessions of BF alone (BF) during a treatment intervention period of 7 weeks. Biofeedback was performed with perfused manometry catheters and rectal balloon distension. Training focused on awareness of balloon distension and instruction in correct defecation dynamics. Successful treatment was defined as <1 encopresis episode per 2 weeks. RESULTS: At the end of the intervention period, the number of encopresis episodes was significantly decreased in both groups: from 7 (2 to 24) to 2 (0 to 17) in the BF group and from 7 (3 to 25) to 2 (0 to 14) in the BF + LAX group. However, children given BF alone had significantly higher success rates than children treated with BF and additional oral laxatives (44% to 11%). CONCLUSIONS: There is no additional effect of laxative treatment in functional nonretentive fecal soiling. Children treated with BF in combination with laxatives showed a significantly lower success percentage compared with those treated with BF alone. These results suggest that children with functional nonretentive fecal soiling should be treated differently from children with constipation and encopresis.     

Proximal segment histology of resected bowel in Hirschsprung's disease predicts postoperative bowel function.

The authors present an overview of 101 patients operated for Hirschsprung's disease by Rehbein procedure. Special attention is directed to the histomorphological findings in the proximal segment of the resected bowel specimens. A strong link was confirmed between these specific features and postoperative bowel function. A histologically regular proximal bowel segment generally predicted good postoperative bowel function with a constipation rate of 10.5%. In patients with intestinal neuronal dysplasia (IND) of the proximal segment the overall clinical result remained unchanged, although the constipation rate rose to 17.8%. Postoperative bowel function was seriously affected in cases characterized by proximal segment hypoganglionosis with a constipation rate of 23.1% and an additional 7.7% with encopresis. Finally, the distinct group of children with aganglionosis of the proximal segment followed a complicated postoperative course with secondary bowel resections and recurrent episodes of enterocolitis. In addition, the authors state their general observation that histological findings become less important whenever a more extensive resection than left hemicolectomy is required. Discussing the results, guidelines are given to further patient treatment once the particular proximal segment histology is diagnosed.     

The prevalence of abnormal genital findings,vulvovaginitis, enuresis and encopresis in children who present with allegations of sexual abuse

ObjectiveTo assess the prevalence of vulvovaginitis, enuresis and encopresis in children who were referred for allegations of sexual abuse.SubjectsA retrospective chart review of 1280 children presenting for non-acute examination after allegations of sexual abuse during a 15-year time span. Interview documentation, physical examination documentation, urinalysis, urine and vaginal cultures were reviewed.ResultsOf the 1280 children, 73.3% were female and 26.7% male. The ages of the children ranged from 6 months to 18 years (median age was 6 years). Interviews revealed that fondling contact was the most common allegation, followed by oral, vaginal, and anal penetration. Interviews also disclosed lower urinary tract symptoms, UTI, constipation, encopresis and enuresis. Physical examination revealed no abnormal genital findings in 44.7% of cases. Examinations of the vagina noted: erythema (18.1%); hymenal notching (posterior 16.8%, anterior 4.4%); vuvlovaginitis (14.0%); laceration or transection (0.6%); and bruising (0.4%). Examination of the anus noted: anal fissure/tear (14.9%); loss of anal tone (10.6%); reflex anal dilatation (9.2%); venous congestion (3.8%); and proctitis (0.9%). Vulvovaginitis was noted in 14% (131/936) and encopresis in 2.3% (21/936). Enuresis according to age was reported in 13% of 5–9 year olds, 14.7% of 10–16 year olds and 18.2% of 17–18 year olds suspected of being abused.ConclusionPrevalence of vulvovaginitis and enuresis were increased, and encopresis was decreased in children with allegations of sexual abuse when compared to the general pediatric population. Physicians should continue to be aware of the possibility of the presence of these conditions in children who have been sexually abused, and offer appropriate treatment.     

Biofeedback training in chronic constipation

Twenty nine patients, aged 5-16 years, were studied to evaluate whether biofeedback training is effective in treating children with chronic constipation and encopresis; the clinical outcome at six weeks and 12 months was also evaluated. Patients received on average five biofeedback training sessions. The existence of external anal contraction or decreased rectal sensation in 16 (55%) and eight (27%) of the children, respectively was identified on manometry. After biofeedback training, 26 (90%) of the patients learned to relax the external anal sphincter; 18 (63%) normalised rectal sensation. The training resulted in a significant increase in defecation frequency and a significant decrease in encopresis. At six weeks, 16 (55%) of the patients were clinically symptom free. At follow up after 12 months the results were sustained. Only three patients showed a relapse within six months, of whom two were successfully treated with one extra training session. Biofeedback training might be a useful therapeutical approach in children with chronic constipation and encopresis.     

Biofeedback training in chronic constipation.

Twenty nine patients, aged 5-16 years, were studied to evaluate whether biofeedback training is effective in treating children with chronic constipation and encopresis; the clinical outcome at six weeks and 12 months was also evaluated. Patients received on average five biofeedback training sessions. The existence of external anal contraction or decreased rectal sensation in 16 (55%) and eight (27%) of the children, respectively was identified on manometry. After biofeedback training, 26 (90%) of the patients learned to relax the external anal sphincter; 18 (63%) normalised rectal sensation. The training resulted in a significant increase in defecation frequency and a significant decrease in encopresis. At six weeks, 16 (55%) of the patients were clinically symptom free. At follow up after 12 months the results were sustained. Only three patients showed a relapse within six months, of whom two were successfully treated with one extra training session. Biofeedback training might be a useful therapeutical approach in children with chronic constipation and encopresis.