Functional constipation in children: challenges and solutions

Pelvic floor physical therapy for functional constipation in children: a systematic review and meta-analysis

Functional constipation is a prevalent pediatric condition and affects the physical and psychological well-being of children. Pelvic floor physical therapy is an emerging approach to manage pelvic floor dysfunction and constipation. This review aimed to evaluate current evidence regarding the effects of pelvic floor physical therapy in children with functional constipation. Three bibliographic databases, PubMed, Embase, and Scopus, were searched from inception to April 1, 2025. Randomized controlled trials comparing the effects of pelvic floor physical therapy to conventional treatment were eligible for inclusion. Methodological quality was assessed using the Physiotherapy Evidence Database (PEDro) scale. Meta-analyses were performed to determine the effects of different pelvic floor physical therapy treatment approaches. Thirteen randomized controlled trials were included, with 997 children with functional constipation. All included studies were scored four to eight on the PEDro scale, indicating fair to good quality. No adverse events related to pelvic floor physical therapy were reported. Biofeedback demonstrated no significant differences compared to control (RR: 0.91, 95% CI 0.50-1.68, p = 0.01). Other treatment approaches of pelvic floor physical therapy demonstrated some positive outcomes, including therapeutic exercise, manual therapy, electrical stimulation, and multimodal treatment. Compared to conventional treatment, these treatments demonstrated significantly increased defecation frequency (MD: 1.89, 95% CI 1.30-2.47, p < 0.001), reduced painful defecation (RR: 0.69, 95% CI 0.54-0.89, p = 0.004), enhanced quality of life (SMD: 1.14, 95% CI 0.26-2.01, p = 0.01), and reduced fecal incontinence (RR: 0.59, 95% CI 0.46-0.74, p < 0.001). Pelvic floor physical therapy is feasible and effective in mitigating symptoms and improving the quality of life for children with functional constipation. Medical providers may consider pelvic floor physical therapy as an adjunctive intervention for children with functional constipation to advance the quality of care.

Weaning strategies for osmotic laxatives in children with functional constipation: a pilot multicenter randomized controlled trial

Background

Long-term maintenance of laxatives is crucial for treating functional constipation (FC) in children. This study aimed to compare the success rates of discontinuation based on different drug reduction methods, in order to identify the optimal strategy for discontinuing laxative use.

Methods

This open-label randomized controlled trial was conducted from September 2020 to September 2021. Children with FC who had been successfully treated with lactulose for more than three months were included. Patients were randomly assigned to one of two groups: dose reduction or frequency reduction over a three-month period. The primary outcome was the weaning success rate at week 12. Participants were divided into two subgroups based on the pre-weaning lactulose dosage: the low-dose group (≤1.5 g/kg/day) and the high-dose group (>1.5 g/kg/day).

Results

A total of 16 patients were enrolled, with a median age of 43 months and 11 boys. There were no significant differences in baseline characteristics between the two groups. The primary outcome showed no significant difference: 66.7% for dose reduction vs. 57.1%. for frequency reduction. Weaning success rates decreased at week 16 (33.3% vs. 57.1%) and week 24 (33.3% vs. 42.9%) without significant differences. In the subgroup analysis, the high-dose group showed a significantly higher weaning success rate at 12 weeks compared to the low-dose group (81.8% vs. 20%, P=0.04). Other measures, including median defecation frequency, incontinence episodes, stool consistency, painful defecations, and compliance, were also similar between the groups. Patient satisfaction was 77.8% for dose reduction and 57.1% for frequency reduction, with no significant difference.

Conclusions

The method of reducing the dose or frequency of lactulose did not affect the weaning success rate in children with FC. However, a pre-weaning lactulose dose exceeding 1.5 g/kg/day may lead to better outcomes at week 12. Despite gradual reduction over more than 3 months, the weaning success rate remained low, highlighting the importance of careful drug discontinuation and follow-up.

Trial Registration

The Clinical Research Information Service of the Korea Center for Disease Control and Prevention (https://cris.nih.go.kr/cris, registration No. KCT0006286).

The outcome of functional constipation in Saudi children

BACKGROUND

Understanding the outcome of functional constipation (FC) for both patients and physicians is essential, yet it has been infrequently reported worldwide. The objective of this report was to update the outcomes of FC in Saudi children.

METHODS

Clinical data including age, sex, response to management, duration of follow up, and type of management were collected from the notes of each clinic visits and phone call follow-ups.

RESULTS

The study included 268 children followed up for a 7 year duration. The median age of onset was 4 (0.1 to 13) years, and 123/268 (46%) were male. There was an increasing recovery rate with increasing duration of follow up with an overall recovery rate of 79%. There was no significant association between recovery and age at onset (p=0.0860) or duration of constipation (P=0.124). Management by pediatric gastroenterologists did not increase rate of recovery (81% vs. 77%, p=0.432) or being cured (47% vs. 36%, p=0.108) significantly. According to the parents of children who recovered, diet in association with polyethylene glycol (PEG) and toilet training were most helpful. Poor diet and nonadherence to medications were the most common causes of lack of recovery.

CONCLUSIONS

The higher rates of recovery in this Middle Eastern childhood population than other populations are possibly related to cultural characteristics. The parents' views support the importance of diet associated with other modalities as important parts of management.  Further research is needed to identify correctable causes of nonadherence to treatment to improve recovery.

Long-term implications of a multidisciplinary tube-weaning program: Parental perspectives

Objectives

Children who are unable to eat and drink orally require temporary or permanent enteral nutritional support via tube feeding. The objective was to describe a weaning program held at a children's rehabilitation hospital and to review the long-term outcomes of the transition from tube nutrition to oral feeding.

Methods

The parents of 82 children who took part in the ALYN intervention program from 2011 to 2022 were requested to participate in a telephone survey to learn about their child's status related to eating, education, social wellbeing, and overall health. They also provided feedback concerning their experience with the tube-weaning program and their current reliance on support for eating-related issues.

Results

The parents of 35 (39%) children responded. Their mean ± SD age at the time of treatment were 2.1 ± 1.76, and the mean ± SD age at the time of the survey 8.85 ± 3.96 years. Their mean current zBMI is -0.7. Overall, parents were very satisfied with the child's eating (4.7 out of 5) ± 0.7, and few reported that the child's eating affected the family mealtime routine (2.1 out of 5) ± 1.3. The children's age at weaning was significantly correlated with parental reports of concern with the child's current eating ability, with younger ages at weaning associated with lower parental concern.

Conclusions

The data demonstrated that despite the complexity of the participants, most children succeed in achieving long-term independent eating, good nutritional status, and social participation around mealtimes.

Systematic review of family and pediatric constipation: An overlooked piece of the puzzle

The objective of this review is to summarize pertinent literature looking at family dynamics and/or adherence to treatment in pediatric functional constipation. A structured systematic literature search was conducted on MEDLINE, Embase, and Web of Science core collection libraries from the years 2000 to 2023 using specific search terms: constipation, treatment adherence, family dynamics, parenting style, and pediatrics. Seventy-one publications were identified and included for review. After screening based on alignment to the review, 20 publications remained. These publications were placed into three categories depending on their intent and findings: (1) recommendations to further increase adherence, (2) studies analyzing factors of adherence, and (3) studies stating a need for a better understanding of family factors. A future area of research is identifying the associations between family factors on adherence to constipation treatment regimens. Results from such studies would increase the amount of positive treatment outcomes and decrease unnecessary healthcare costs.

Effect of prebiotic oligosaccharides on bowel habit and the gut microbiota in children with functional constipation (Inside study): study protocol for a randomised, placebo-controlled, multi-centre trial

BACKGROUND

Functional constipation (FC) in children is a common gastrointestinal disorder with a worldwide-pooled prevalence of 9.5%. Complaints include infrequent bowel movements, painful defecation due to hard and/or large stools, faecal incontinence, and abdominal pain. Prebiotic oligosaccharides have been shown to relieve constipation symptoms in young adults and elderly. However, sufficient evidence is lacking linking additional prebiotic intake to improve symptoms in children with FC. We hypothesise that prebiotic oligosaccharides are able to relieve symptoms of constipation in young children as well.

METHODS

In the present randomised, double-blind, placebo-controlled, multi-centre study, we will study the effects of two prebiotic oligosaccharides in comparison to placebo on constipation symptoms in children of 1-5 years (12 to 72 months) of age diagnosed with FC according to the Rome IV criteria for functional gastrointestinal disorders. The primary outcome measure will be change in stool consistency. Secondary outcomes include stool frequency and stool consistency in a number of cases (%). Tertiary outcomes include among others painful defecation, use of rescue medication, and quality of life. In addition, the impact on gut microbiome outcomes such as faecal microbiota composition and metabolites will be investigated. Participants start with a run-in period, after which they will receive supplements delivered in tins with scoops for 8 weeks, containing one of the two prebiotic oligosaccharides or placebo, followed by a 4-week wash-out period.

DISCUSSION

This randomised double-blind, placebo-controlled multi-centre study will investigate the effectiveness of prebiotic oligosaccharides in children aged 1-5 years with FC.

TRIAL REGISTRATION

ClinicalTrials.gov NCT04282551. Registered on 24 February 2020.

Efficacy of lubiprostone for functional constipation treatment in adolescents and children: Randomized controlled trial

OBJECTIVES

Adolescent and pediatric functional constipation (FC) is a common clinical problem. Currently, data on lubiprostone for the treatment of pediatric FC are scarce. This study investigated the efficacy and safety of lubiprostone in the treatment of pediatric FC.

METHODS

In a single-blinded, randomized controlled study, we included 280 patients aged 8-18 years with FC. Patients were randomized either to a weight-based lubiprostone dose (n = 140) or conventional laxatives (n = 140), including lactulose, bisacodyl, or sodium picosulfate, for 12 weeks, followed by 4 weeks posttreatment follow-up.

RESULTS

Improvement in constipation was achieved in 128 (91.4%) patients in the lubiprostone group, and in 48 (34.3%) patients of the conventional therapy group (p < 0.001) and was sustained after treatment discontinuation. One quarter of the lubiprostone group experienced the first spontaneous bowel motion within 48 h after dose initiation. A total of 75.7% of the lubiprostone group could achieve and sustain Bristol stool form of 3 or 4 during the last 4 weeks of therapy and through the 4 weeks of follow-up versus 50 (35.7%) patients in the conventional therapy group (p < 0.001). No life-threatening adverse drug reactions were encountered, and no treatment-related discontinuation. Mild self-limited colicky abdominal pain and headache were the most prevalent side effects in the lubiprostone group.

CONCLUSIONS

Lubiprostone is an effective and well-tolerated pharmacotherapy for youthful age and pediatric age groups, which may alter the paradigm of pediatric FC treatment.

Clinical profile of functional constipation in Saudi children

BACKGROUND

Functional constipation (FC) is a common condition in children, and information on the clinical characteristics of FC in Saudi children is scarce.

OBJECTIVE

Describe the clinical profile of FC in Saudi children.

DESIGN

Retrospective.

SETTING

Hospital that provides primary, intermediate and tertiary care.

PATIENTS AND METHODS

All children diagnosed with FC according to the Rome IV criteria were included and had at least one follow-up clinic visit. Demographic and clinical data collected from medical records included the age at onset, duration of constipation, clinical features, treatment modalities, and factors associated with clinical response. Descriptive statistics and Pearson's chi-squared test were used in the statistical analysis to see how categorical study variables were linked to clinical response. A P value of ≤.05 was used to report statistical significance.

MAIN OUTCOME MEASURE

Compliance and clinical response to polyethylene glycol (PEG) compared with lactulose.

SAMPLE SIZE

370 children from 0.1 to 13 years of age.

RESULTS

The median (IQR) age of onset was 4 (5) years and less than one year in 14%. The median (IQR) duration of constipation was 4 months (11) and less than two months in 93/370 (25%). Abdominal pain was the most commonly associated feature (44%). Screening for celiac disease and hypothyroidism was negative. A Fleet enema was the most common disimpaction method (54%) and PEG was the most common maintenance medication (63.4%). PEG was significantly better tolerated (P=.0008) and more effective than lactulose (P<.0001). Compliance was the only variable significantly associated with clinical response.

CONCLUSIONS

PEG was better tolerated and more effective than lactulose in our study, a finding in agreement with the literature. Therefore, PEG should be the drug of choice in the initial management of FC in Saudi children. Prospective studies on the causes of noncompliance are needed to improve the response to treatment.

LIMITATIONS

The limitations of retrospective design are missing data, recall bias, and hospital-based limitation, such as missing milder cases treated at the outpatient level. However, the sample size of 370 may have minimized these limitations.

Probiotics for functional constipation in children: an overview of overlapping systematic reviews

Background

This overview of systematic reviews (SRs) and meta-analysis (MAs) aimed to systematically collate, appraise and synthesize evidence of probiotics for functional constipation (FC) in children.

Methods

SRs/MAs of probiotics for FC in children were systematic identified by searching Cochrane Library, PubMed, Embase, and Web of science. Assessment of Multiple Systematic Reviews 2 (AMSTAR-2), Preferred Reporting Items for Systematic Reviews and Meta-Analyses (PRISMA), and Grading of Recommendations, Assessment, Development, and Evaluation (GRADE) were unitized by two reviewers independently to assess the methodological quality, reporting quality, and quality of evidence, respectively.

Results

Seven SRs/MAs met the eligibility criteria and were included in this study. According to AMSTAR-2, a very low methodological quality assessment was given to the included SRs/MAs due to the limitations of items 2, 4 and 7. For the PRISMA statement, the overall quality of reporting was unsatisfactory due to the lack of reporting on protocol, risk of bias across studies, synthesis of results, and additional analysis. According to GRADE, the quality of evidence for outcomes was rated as very low to moderate.

Conclusions

Probiotics may be beneficial in improving FC in children. Because of limitations and inconsistent conclusions, further rigorous, normative and comprehensive SRs/MAs are needed to provide robust evidence for definitive conclusions.

Noninvasive Sacral Neuromodulation in Children and Adolescents: A Case-Control Study of Patients With Chronic Refractory Constipation

OBJECTIVES

In adult patients with chronic refractory constipation, invasive sacral neuromodulation (SNM) has been applied successfully. There is a need for less invasive solutions while providing comparable therapeutic effects in children and adolescents. We present a prospective, interventional case-control study on the application of noninvasive SNM.

MATERIALS AND METHODS

Patients with chronic constipation refractory to conservative treatment were prospectively included in the study from 2018 to 2021 and randomized to either SNM (SNM group: single current stimulation for 24 h/d, frequency 15 Hz, pulse width 210 μs, intensity 1-10 mA) or conventional treatment (controls: full range of pharmacologic and nonpharmacologic options). Treatment was conducted for 12 weeks. Treatment effects were collected with specialized questionnaires and quality-of-life analysis (KINDLR). Outcome variables were defecation frequency, stool consistency, fecal incontinence (FI) episodes, and abdominal pain.

RESULTS

Analysis was conducted in 28 patients with SNM and 31 controls (median age 7.0, range 3-16 years). Overall responsiveness to treatment was 86% of the SNM group and 39% of the control group (p < 0.001). All outcome variables were positively influenced by SNM treatment. Defecation frequency improved in 46% of patients with SNM and in 19% of controls (p = 0.026), as did stool consistency in 57% of patients with SNM and in 26% of controls (p = 0.014). Fecal incontinence was significantly reduced in 76% of patients with SNM (n = 16/21 vs 42% of controls [n = 11/26], p = 0.042). Quality of life improved significantly during SNM treatment (71.32 [baseline] vs 85.00 [after 12 weeks], p < 0.001) and confirmed a positive influence of SNM treatment compared with the control group (85.00 [SNM after 12 weeks] vs 79.29 [controls after 12 weeks], p = 0.047).

CONCLUSIONS

Outcome of noninvasive SNM treatment in patients with chronic refractory constipation is better than conventional treatment.

Establishment of a nomogram for predicting functional constipation among children in China: Using the Rome IV criteria

BACKGROUND AND STUDY AIMS

Childhood functional constipation (FC) is gradually becoming an emerging public health problem. This study aimed to develop a personalized nomogram for the prediction of incident FC among Chinese children, and the diagnosis of FC was based on the Rome IV criteria.

PATIENTS AND METHODS

This cross-sectional study was conducted from Nov. 2020 to Jan. 2021 among children residing in Anhui province, China. An electronic questionnaire regarding the general demographic and clinical characteristics of all children was completed by their primary caregivers. The multivariate logistic regression analysis was applied to identify risk factors for FC. Moreover, a nomogram was constructed for FC based on the risk factors identified from the multivariate analysis.

RESULTS

In this study, a total of 901 electronic questionnaires were collected, of which 832 (92.3%) questionnaires were properly completed and included in the final analysis. The prevalence of FC among Chinese children was 11.3% based on the Rome IV criteria. After controlling for potential confounding factors, the multivariate logistic regression analysis showed that inadequate sleep, picky eating, and positive family history of FC were identified as key risk factors of FC. The area under the receiver operating characteristic curve of the nomogram was 0.694 (95 %CI: 0.6412-0.7459). Further, a calibration curve drawn illustrated that the predicted probabilities reasonably approximately the actual prevalence of FC in this population.

CONCLUSION

Inadequate sleep, picky eating, and positive family history of FC were identified as risk factors of FC. An easy-to-use nomogram was constructed based on these three significant factors. Besides, this nomogram was validated to have acceptable discrimination and calibration capabilities. Hence, this nomogram may enable clinical professionals to predict the risk of FC among Chinese children and further provide optimized disease prevention and intervention for this population.

Gutted: constipation in children with chronic kidney disease and on dialysis

Functional constipation is a common problem in otherwise healthy children. Children with chronic kidney disease (CKD) and on dialysis have additional disease-related risk factors including the uremic milieu, fluid and dietary restrictions, and decreased physical activity, as well as treatment-related risk factors such as dialysis therapy and polypharmacy that contribute to and compound the problem. Constipation causes significant distress for children and their caregivers. In children on peritoneal dialysis, severe constipation can impede catheter function and ultrafiltration. Accumulating evidence points to a possible bidirectional relationship between constipation and CKD, potentially mediated by gut dysbiosis with consequent increased generation of gut-derived uremic toxins and disruption of intestinal epithelium integrity leading to translocation of noxious luminal contents into the circulation inducing systemic inflammation. Effective management of constipation is required but there is little published data on the safety and effectiveness of treatments in adults or children with CKD. In this review, we discuss the diagnosis and epidemiology of functional constipation, provide an overview of its pathophysiology, summarize the therapeutic management, and reflect on the challenges in children with CKD.

Multicentre Study Into the Use of Polyethylene Glycol With Electrolytes Over at Least 6 Months to Treat Constipation in Paediatric Populations

Background

Constipation is a common clinical problem in children, for which the first-line therapeutic options are osmotic laxatives, mainly polyethylene glycol (PEG). These treatments are often prescribed for short or limited periods, with progressive treatment withdrawal often resulting in relapses. However, there are a few studies into the long-term use (≥6 months) of PEG 3350 with electrolytes (PEG+E) in terms of the patients' clinical evolution.

Objectives

To assess bowel movement and other relevant symptoms in children with constipation receiving PEG+E (≥6 months), as well as parent/caregiver satisfaction with this treatment.

Methods

A retrospective, observational, descriptive, longitudinal, and multicentre study was carried out on 74 children diagnosed with functional constipation (ROME IV criteria) who had received PEG+E (≥6 months). Bowel control was assessed using the Bristol stool scale, and the parent's/caregiver's perception of the treatment was also evaluated employing a nonvalidated questionnaire.

Results

Children with an average duration of constipation >1 year experienced a significant improvement in bowel movements and stool consistency when using PEG+E. The mean duration of use was 18.6 (±13.4) months, without the need to adjust the dose for weight. All clinical symptoms improved significantly except bloating, and all the parents/caregivers confirmed these clinical improvements.

Conclusions

Children treated with PEG+E (≥6 months) normalised their bowel movements, improving the clinical symptoms related to constipation in the absence of serious advert events or the need for dosage adjustments due to weight gain. Parents/caregivers reported good satisfaction with PEG+E treatment.

Transabdominal ultrasound of rectal diameter in healthy infants: a prospective cohort study during the first year of life

AIM

Transabdominal rectal ultrasound (TRU) is used to measure transverse rectal diameter (TRD) in order to diagnose functional constipation (FC) and megarectum, and to evaluate treatment. The proposed cut-off value is 3.0 cm. Currently, no standardised values exist for children below the age of 4. We used repeated TRUs to establish reference TRD values in healthy infants and to describe rectal diameter in infants with FC.

METHODS

This prospective observational cohort study enrolled healthy term babies from a maternity department. TRD measurements were taken at 2 and 12 months of age, and questionnaires completed in interviews helped diagnose FC according to Rome III criteria.

RESULTS

Two hundred TRUs were performed on 110 infants (62 males). In infants without FC anytime, the mean TRD at 2 months was 1.56 (SD 0.32) cm and at 12 months 1.78 (0.47) cm, while the 95th percentiles were 2.26 and 2.64 cm, respectively. In 77 infants with two TRUs, the mean increase was 0.21 cm (95% confidence interval: 0.099-0.318). Thirteen infants were diagnosed with FC during the study period. At 2 and 12 months of age, there was no difference in TRD between infants with and without FC.

CONCLUSION

TRD increased from 2 to 12 months. We suggest 2.3 cm as an upper limit for normal TRD at 2 months and 2.6 cm at 12 months. Infants diagnosed with FC did not have a greater TRD than infants without, either before or after treatment. Further studies are needed to evaluate the usefulness of TRU in infants with FC or megarectum.

The Effect of the Flint Water Crisis Secondary to Increased Lead Levels in Drinking Water on Constipation in Children in the City of Flint, Michigan, USA

Introduction  Constipation is a common condition in children, affecting almost one-third of the population at some point in childhood across the world. Functional constipation is the most common cause, with no clear etiology. From April 25, 2014, through October 16, 2015, the water source for the city of Flint residents was untreated Flint River water, which resulted in lead-contaminated drinking water. Lead poisoning has been associated with constipation and has multisystem sequelae, including neurological, muscular, and hematological impacts. Children may be especially vulnerable to this with their higher water intake-to-body weight ratio. There has been no previous study examining the possible relationship between the Flint water crisis and constipation in children. In our study, we aimed to see if the increased lead level in the water had any effect on constipation in children in Flint. Methods We included all children seen and diagnosed with constipation at Hurley Medical Center's Pediatric Gastrointestinal (GI) Clinic. We included only children seen in 2013 (pre-water crisis) and 2017 (post-water crisis). Children with chronic neurologic disorders, celiac disease, hypothyroidism, diabetes, Hirschsprung's disease, short bowel syndrome, and gastrointestinal surgeries were excluded. We looked at the age of presentation, associated symptoms, medications used, need for hospital admission or emergency department (ED) visits, and improvements at follow-up. Results  A total of 79 patients were included in the study. There were 29 patients from 2013 and 50 patients from 2017 (post-lead exposure period). The rate of constipation referrals to the GI clinic for the Flint population of children was significantly higher in 2017 (p=0.001). The most common associated symptom was abdominal pain in both groups. Straining was more prominent in the 2017 group (60%) compared to the 2013 group (34.5%, p=0.029). There was no clinical or statistically significant difference between the groups noted in abdominal pain, blood in the stool, fecal incontinence, vomiting, history of urinary tract infection (UTI), abdominal distention, or stool impaction. Conclusions The number of patients referred to Hurley's Pediatric GI Clinic for constipation increased after the lead water crisis in Flint. Moreover, straining has significantly increased in post-lead exposure compared to pre-lead exposure. There was no clinical or statistically significant difference noted in abdominal pain, blood in the stool, fecal incontinence, vomiting, history of UTI, abdominal distention, or stool impaction between both groups. A larger study would need to be done to confirm these findings, rule out other cofactors, and look into minerals in water and their effect on intestine innervations.

Impact of Probiotics on the Prevention and Treatment of Gastrointestinal Diseases in the Pediatric Population

Despite the high prevalence of gastrointestinal disorders (GIDs) in infants and children, especially those categorized as functional GIDs (FGIDs), insufficient knowledge about their pathophysiology has limited both symptomatic diagnosis and the development of optimal therapies. Recent advances in the field of probiotics have made their potential use as an interesting therapeutic and preventive strategy against these disorders possible, but further efforts are still needed. In fact, there is great controversy surrounding this topic, generated by the high variety of potential probiotics strains with plausible therapeutic utility, the lack of consensus in their use as well as the few comparative studies available on probiotics that record their efficacy. Taking into account these limitations, and in the absence of clear guidelines about the dose and timeframe for successful probiotic therapy, our review aimed to evaluate current studies on potential use of probiotics for the prevention and treatment of the most common FGIDs and GIDs in the pediatric population. Furthermore, matters referring to know major action pathways and key safety recommendations for probiotic administration proposed by major pediatric health agencies shall also be discussed.

The Intestinal Tract Brush Border in Young Children Uniformly Expresses Guanylate Cyclase C

The present study examined staining of guanylate cyclase C (GCC/GUCY2C) in the small and large intestines of children younger than age 7 years. Normal intestinal tissue from children aged 0 to 7 years was stained using GCC, uroguanylin, and villin antibodies and scored for staining intensity. A subset underwent quantitative real-time polymerase chain reaction. Data were analyzed using t test of independent means, descriptive statistics, and logistic regression. Four hundred sixty-four specimens underwent immunohistochemistry; 291 specimens underwent real-time polymerase chain reaction. GCC, villin, and uroguanylin were detected across age groups and anatomic sites. No significant differences were identifiable across age groups. GUCY2C and uroguanylin mRNA was detected in all samples, with no variability of statistical significance of either target-to-villin normalization between any age cohorts. A gradient of expression of GCC across age groups does not seem to exist.

Laser acupuncture improving functional chronic constipation in children: a randomized controlled trial

Functional chronic constipation (FCC) is a disorder caused by low fiber consumption, lack of fluid intake, lack of mobility, or side effects of medications. The objective of this study was to compare the effects of laser acupuncture and the commonly used osmotic laxative, lactulose (as the control), both combined with behavioral therapy and dietary modification, on children with FCC in a randomized controlled trial (RCT). Forty children were randomly chosen, aged 5-15 years with FCC, and randomized into two equal groups (gender ratio (50% male; 50% female), mean ± SD weight (24.2 ± 6.27 kg and 25.7 ± 7.47 kg for groups A and B, respectively)). Study group (group A): used laser acupuncture (650 nm), 30 mW, 0.15 cm2 spot size, 90 s per acupuncture point (ST25, ST36, ST37, BL25, and LI11). Control group (group B): lactulose syrup (1 to 3 mL/kg/day) orally, in divided doses 3 times weekly for 4 weeks, and behavioral training for both groups. Evaluations were conducted before and after the study to assess the efficacy of the therapy. Median value frequency significantly increased in groups A and B post-treatment (4 (6.75-3) and 3 (3.75-2), respectively) compared to pre-treatment (2 (2-1) and 2 (2-0.25), respectively) (p = 0.0001), in favor of group A (p = 0.01). Significant improvement of stool consistency according to Bristol stool scale (BSS) in groups A and B (p = 0.0001), (p = 0.002) respectively in favor of group A (p = 0.03). T-test, Fisher, and Wilcoxon signed rank tests were conducted to compare groups. Non-invasive, painless laser acupuncture therapy can be considered as an alternative therapy for patients with FCC.

Cross-cultural adaptation, validity, and reliability of the pediatric constipation score-parent report in pediatric functional constipation in an Iranian population

Aim

We evaluated the Persian version of the pediatric constipation score-parent report (PCS) validity and reliability.

Background

Functional constipation in children results in physical and psychological problems. Therefore, it is necessary to utilize a questionnaire to assess the health-related quality of life in children with chronic constipation.

Methods

First, our team translated the English version of the questionnaire into the Persian language. Second, the psychometric properties of the Persian version were collected in 149 children with functional constipation referred to a pediatrics hospital by an expert team. We assessed content validity (CV) through the CV index (CVI) and CV ratio (CVR). The construct validity was evaluated by exploratory factor analysis, and reproducibility was tested based on test-retest reliability using the intra-class correlation coefficient (ICC). Internal consistency was calculated using Cronbach's α. we also evaluated the ceiling or floor.

Results

Results showed acceptable CVI in relevancy, clarity, and simplicity, acceptable CVR for all items, moderate internal consistency (Cronbach's alpha=0.548), and almost perfect reproducibility (ICC=0.93). No ceiling or floor effect was seen.

Conclusion

The Persian version of PCS showed good validity and reliability in children with functional constipation in Iran. Therefore, we can use it in clinical and research domains in Persian-speaking countries.

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.

Measurement of Rectal Diameter and Anterior Wall Thickness by Ultrasonography in Children with Chronic Constipation

BACKGROUND

Measurement of rectal diameter by ultrasonography helps the clinician in the diagnosis of chronic constipation in children for whom rectal examination cannot be performed. The aim of the study is to determine the rectal diameter and anterior wall thickness values in constipated and healthy children and to evaluate the feasibility of ultrasonography in the diagnosis of functional constipation in children who refuse digital rectal examination.

METHODS

One hundred forty constipated and 164 healthy children participated in the study. All patients were divided into 4 subgroups according to their ages (≤3 years [group I], 3.1-6 years [group II], 6.1-12 years [group III], and >12 years [group IV]) and were referred to the radiology department. The measurement was made from above the symphysis pubis, under the ischial spine, and at the bladder neck. Anterior wall thickness measurement was performed. The measurements were recorded according to the presence or absence of fecal mass in the rectum.

RESULTS

Constipated children with fecal mass positive group III was found to have significant difference in all of the planes in rectal diameter measurement. Rectum anterior wall thickness measurement was found to be higher in constipated patients with fecal mass (+) compared to the control. Its measurements in constipated patients in group II, group III, and group IV with no fecal mass were found to be statistically higher than the control group.

CONCLUSION

The measurement of rectal diameter and anterior wall thickness by ultrasonography as a noninvasive method was per formed in children who did not want the digital rectal examination, and it may be useful in the diagnosis of constipation.

Relationship of Functional Constipation and Growth Status: A Systematic Review and Meta-Analysis

OBJECTIVES

Functional constipation (FC) and malnutrition are 2 of the most common diseases affecting children worldwide with long-term consequences. We hereby performed a systematic review and meta-analysis to analyze the relationship between these 2 entities.

METHODS

We searched PubMed, American Academics of Pediatrics (AAP), Cochrane, ClinicalTrials.gov (from inception to December 11, 2021) using "constipation," "growth," and "children" as the keywords. Newcastle-Ottawa Scale was used as the risk of bias assessment tool. Meta-analysis using the random-effects model was done.

RESULTS

Eighteen studies involving 33,410 children were chosen in this study. Meta-analysis of all the studies showed statistically significant relationship between FC with both overweight/obesity [odds ratio (OR) = 1.75; 95% confidence interval (CI) = 1.11-2.76; P = 0.02], in Asian countries subgroup, and undernutrition (OR = 2.38; 95% CI = 1.43-3.97; P < 0.001) in Asian countries using ROME criteria's subgroup. Normal weight patients were also more prevalent in non-FC patients in Asia (OR = 0.54; 95% CI = 0.38-0.76; P < 0.001). The relationship between FC and short stature is still inconclusive.

CONCLUSIONS

FC is correlated with the prevalence of both overweight/obesity and undernutrition. Future studies should evaluate the causal relationship and whether FC treatment could help.

The use of two Comfort Young Child Formulas in the dietary management of toddlers with functional constipation: a randomized controlled trial

BACKGROUND

Pharmacological intervention with laxatives is the conventional treatment for functional constipation (FC). Data to support the dietary management of FC is lacking. This study compared the efficacy of two Comfort young child formulas (YCFs) with regards to the maintenance of healthy stooling parameters in toddlers with a history of constipation. It was registered in the Netherlands Trial Registry [identifier: NL7420 (NTR7653)], registration date 20/09/2018.

METHODS

Ninety-five healthy toddlers, aged 12 to 32 months, diagnosed with FC (Rome III criteria) were randomized to receive one of two study formulas after pharmacological treatment. For the first month of the intervention, subjects received a laxative in a decreasing maintenance dose alongside a test or control formula (maintenance phase). Subsequently, subjects only consumed formula for another month (post-maintenance phase). Stooling parameters were obtained weekly using the Bristol Stool Scale and the modified Rome III Questionnaire on Paediatric Gastrointestinal Symptoms for infants and toddlers. Differences in percentages of hard stools (primary outcome) and other stooling parameters were analysed using analysis of covariance and Chi-Square methods.

RESULTS

Both formulas resulted in similar overall percentage of hard stools during the intervention period, respectively 5.02% in the test and 2.99% in the control group (n.s.). In the test group, percentages dropped from 7.11% at the end of the maintenance phase, to 3.92% at the end of the post-maintenance phase. In contrast, the percentage of hard stools in the control group was similar at the end of the maintenance (3.18%) and post-maintenance phase (2.83%; n.s.). No difference was found in the overall stool frequency between groups. At the end of the maintenance phase, only 22% and 19% of toddlers consuming the test and control formulae, respectively, met 2 or more of the criteria for FC. At the end of the study, this percentage of subjects decreased further to 9% in the test group, which tended to be lower compared to the 21% found in the control (p = 0.107). No laxative use was reported in either study group during the post-maintenance phase.

CONCLUSION

Both Comfort YCF support the maintenance of improved stooling over time in toddlers with a history of constipation. The percentage of subjects suffering from functional constipation tended to be lower after the intervention period when receiving the formula with intact protein.

Functional Gastrointestinal Diseases and Dietary Practices among Pakistani Children-A Schools Based Cross-Sectional Study

BACKGROUND

Functional gastrointestinal diseases (FGIDs) are an important yet highly under explored area among public health issues. FGIDs' complex etiology makes them of interest along with their prevalence in children steadily increasing, especially in the developing world. We aimed to determine the burden FGIDs pose on school-going children, and to determine its association with the dietary intake patterns in Pakistani children.

METHODOLOGY

The study included 385 school-children from public and private schools in Pakistan through multistage random sampling, from March to August 2022. We used the Food Frequency Questionnaire (FFQ) and Rome IV Criteria for a comprehensive exploration of the issue. Associations between the FGIDs and dietary factors were analyzed using chi-square and Fischer's exact tests in SPSS version 26.0.

RESULTS

Females constituted 77.4% (n = 298) of all respondents, while 44.9% (n = 173) of the total reported a family history of gastrointestinal diseases. FFQ analysis showed varying consumption frequencies for different food groups. Functional abdominal pain and irritable bowel syndrome (IBS) were the highest reported FGIDs with a prevalence of 38.7% (n = 149) and 24.9% (n = 96), respectively. Statistical associations were found between different FGIDs and gender, age, household income, family members, and dietary variables such as fruit, vegetable, beverage and pulse consumption.

CONCLUSION

FGIDs were found to be associated with a number of socio-demographic and dietary factors which calls for small scale and large scale attention to the issue. Results from the current study and further studies may help develop guidelines to manage these disorders in Pakistan.

Rectal measurements and their correlation with bowel habits: Evaluation by trans-abdominal ultrasound in children with functional constipation

AIM

Constipation is one of the most common complaints in childhood affecting the quality of life of both children and parents. This study intends to investigate rectal measurements on ultrasound and their relationship with bowel habits.

METHODS

In this cross-sectional study, 100 children with functional constipation (FC) referred to a single hospital between 2018 and 2019 were enrolled. After obtaining informed consent, a questionnaire including demographic and constipation characteristics was completed, and a physical examination including digital rectal examination (DRE) was performed. Complete abdominopelvic ultrasound was then performed. Target measurements included rectal transverse diameter (RTD), rectal anterior wall thickness (RAWT) and the presence of faecal impaction.

RESULTS

One hundred children with a mean age of 7.68 ± 3.30 years were present in the study. The mean duration of constipation was 15.86 ± 13.34 months. In 14% of children, painful defaecation was reported. 88% of children had some degree of faecal incontinence. According to the ultrasound findings, the mean RTD and RAWT were 3.39 ± 0.73 cm and 2.77 ± 0.68 mm, respectively, and faecal impaction was present in 70% of cases. There was a positive correlation between RTD and RAWT with age, duration of constipation and the presence of hard stools, and there was a negative correlation with frequency of defecation (P < 0.05).

CONCLUSION

RTD and RAWT increased with increasing constipation duration and the presence of hard stools and decreased with increasing frequency of defaecation. DRE could be omitted from the initial clinical assessment if you had access to reliable ultrasound data.

Reported Prevalence and Nutritional Management of Functional Constipation among Young Children from Healthcare Professionals in Eight Countries across Asia, Europe and Latin America

Background: The prevalence of functional constipation (FC) among children varies widely. A survey among healthcare professionals (HCPs) was conducted to better understand the HCP-reported prevalence and (nutritional) management of FC in children 12−36 months old. Methods: An anonymous e-survey using SurveyMonkey was disseminated via emails or WhatsApp among HCPs in eight countries/regions. Results: Data from 2199 respondents were analyzed. The majority of the respondents (65.9%) were from Russia, followed by other countries (Indonesia (11.0%), Malaysia (6.0%)), Mexico, KSA (5.1% (5.7%), Turkey (3.0%), Hong Kong (2.2%), Singapore (1.1%)). In total, 80% of the respondents (n = 1759) were pediatricians. The prevalence of FC in toddlers was reported at less than 5% by 43% of the respondents. Overall, 40% of the respondents reported using ROME IV criteria in > 70% of the cases to diagnose FC, while 11% never uses Rome IV. History of painful defecation and defecations < 2 x/week are the two most important criteria for diagnosing FC. In total, 33% of the respondents reported changing the standard formula to a specific nutritional solution, accompanied by parental reassurance. Conclusion: The most reported prevalence of FC in toddlers in this survey was less than five percent. ROME IV criteria are frequently used for establishing the diagnosis. Nutritional management is preferred over pharmacological treatment in managing FC.

Impact of Neurodevelopmental Disorders on Bowel Management Outcomes in Children with Functional Constipation

OBJECTIVES

Patients experiencing functional constipation (FC) can participate in structured bowel management programs (BMPs) to manage constipation or fecal incontinence when standard management fails. We sought to evaluate the efficacy of BMPs for children with FC with and without neurodevelopmental disorders.

METHODS

We performed a retrospective review of children with FC who participated in our BMP from 2014 to 2021. Stool/urinary continence, bowel regimen, surgical history, parent-reported outcomes measures (PROMs: Cleveland Clinic Constipation Score, Baylor Continence Scale, Vancouver Symptom Score for Dysfunctional Elimination), and Pediatric Quality of Life Inventory (PedsQL) were assessed pre- and at least 9 months post-BMP.

RESULTS

The cohort included 156 patients with a median age of 9 years and follow-up of 627 days (IQR: 389-808 days). Two sub-cohorts included patients with FC only (69%) and FC plus a neurodevelopmental disorder (31%): 59% attention-deficit/hyperactivity disorder, 33% autism spectrum disorder, and 8% obsessive-compulsive disorder. Both groups had significantly improved follow-up bowel movement frequency and continence (39%-90% neurodevelopmental, 44%-82% FC only, P < 0.001) and urinary continence (65%-90% neurodevelopmental, 69%-91% FC only, P < 0.02). There was a significant improvement in most of the PROMs at follow-up. Both groups experienced a clinically meaningful improvement in overall PedsQL scores (pre- and postBMP difference of >4.5).

CONCLUSIONS

Patients with FC with and without a neurodevelopmental disorder had significant improvement in stool and urinary continence after undergoing a BMP. Further studies are needed to see if this improvement is durable over a longer period of time in this challenging cohort.

White-matter microstructural alterations in patients with functional constipation: A tract-based spatial statistics study

BACKGROUND

Highly prevalent functional constipation (FC) belongs to the category of functional gastrointestinal disorders. Neuroimaging studies have demonstrated brain functional and morphometric changes in patients with FC. However, whether FC is associated with white-matter (WM) microstructural alterations remains unclear.

METHODS

Diffusion tensor imaging (DTI) and tract-based spatial statistics (TBSS) were introduced to investigate WM microstructural changes as calculated by fractional anisotropy (FA), mean (MD), axial (AD), and radial diffusivity (RD) in 26 FC patients and 31 healthy controls.

KEY RESULTS

Patients with FC relative to healthy controls had significantly decreased FA with increased MD/RD in the genu (GCC) and body (BCC) of the corpus callosum, right cingulum (Cing), bilateral anterior corona radiata (ACR), bilateral superior corona radiata (SCR), and left posterior corona radiata (PCR) (p_FWE  < 0.05). Between-group difference was only in the left SCR and PCR when regressing out anxiety and depression as covariates.

CONCLUSIONS AND INFERENCES

These WM tracts are mainly responsible for sensory and emotional information communication and corresponding functional integration; thus, our findings indicate an association between FC and WM microstructural abnormalities in regions involved with visceral afferent and emotional-arousal processing. Alterations in WM microstructures including the CC, cingulum, and ACR are more related to psychological symptoms than constipation, which might have greater impact on brain structures.

Prokinetic and Laxative Effects of Chrozophora tinctoria Whole Plant Extract

Chrozophora tinctoria (Euphorbiaceae) has been used as an emetic, anthelminthic, and cathartic agent in traditional medicine. We used gas chromatography-mass spectrometry (GC-MS) to characterize the composition of ethyl acetate (EAC) and dichloromethane (DCMC) fractions from the whole Chrozophora tinctoria plant. EAC and DCMC fractions were evaluated for acetylcholinesterase (AChE) inhibitory activity and acute toxicity. Their effects on intestinal propulsive movement and spasmogenic activity of the gastrointestinal tract (GIT) muscle were also assessed. The compounds detected in both fractions were mostly fatty acids, with about seven compounds in EAC and 10 in DCMC. These included pharmacologically active compounds such as imipramine, used to treat depression, or hexadecanoic acid methyl ester, an antioxidant. Both EAC and DCMC fractions inhibited acetylcholinesterase (AChE) activity with IC₅₀ values of 10 µg and 130 µg, respectively. Both the fractions were found to be toxic in a dose-dependent manner, inducing emesis at 0.5 g or higher and lethargy and mortality from 3–5 g upwards. Similarly, both of the fractions showed laxative activity in metronidazole- and loperamide-induced constipation models. EAC relaxed the intestinal muscle at a lower dose (1 mg/mL) than DCMC. Similarly, the EAC extract showed a significant relaxation effect (EC₅₀ = 0.67 ± 0.15 mg/mL) on KCL-induced contraction in rabbit jejunum as compared to DCMC (EC₅₀ = 5.04 ± 0.05 mg/kg). The present study strongly supports the folklore that this valuable plant is a cathartic agent. Further work is required to isolate and validate the bioactive compounds that act as diarrheal agents in Chrozophora tinctoria.

The burden of pediatric emergency departments, constipation: a systematic review

Background

Constipation constitutes an important part of emergency service applications in our country as well as all over the world. We aimed to illuminate the situation in our regional hospital regarding the increase in the emergency department density and the financial burden of applications due to constipation.

Methods

This descriptive retrospective study was conducted in a regional tertiary hospital. The medical records of all constipation-related admissions to the emergency department between 01 January 2019 and 31 December 2019 were retrospectively reviewed. The etiology of constipation, complaints, physical examination, imaging studies, treatment modalities, and health expenses costs were recorded.

Results

A total of 3271 patients aged 0–17 years (mean 4.24 ± 3.56 years) were included in the study. One thousand nine hundred and seventy-six (60.3%) of the patients were male, and 1295 (39.6%) of them were female. The majority of patients (n = 3107, 95%) were discharged without hospitalization. Health expenditure due to constipation was 834.626 Turkish liras. The health cost of the patients who were treated from the emergency room without hospitalization was 780.126 Turkish liras.

Conclusions

In order to reduce unnecessary constipation applications and costs in emergency services, more detailed information should be given to prevent constipation during outpatient services, and dietary counseling should be provided when necessary.

Probiotic Properties of Bifidobacterium longum KABP042 and Pediococcus pentosaceus KABP041 Show Potential to Counteract Functional Gastrointestinal Disorders in an Observational Pilot Trial in Infants

Functional gastrointestinal disorders (FGIDs) are a common concern during the first year of life. Recognized as gut-brain axis disorders by Rome IV criteria, FGIDs etiology is linked to altered gut-brain interaction, intestinal physiology, and microbiota. In this regard, probiotics have emerged as a promising therapy for infant FGIDs. In this study, we have investigated the probiotic potential of the strains Bifidobacterium longum KABP042 and Pediococcus pentosaceus KABP041-isolated from healthy children's feces-in the treatment of FGIDs. To this scope, genome sequences of both strains were obtained and subjected to in silico analyses. No virulence factors were detected for any strain and only the non-transferable erm(49) gene, which confers resistance to erythromycin and clindamycin, was identified in the genome of B. longum KABP042. Safety of both strains was confirmed by acute oral toxicity in rats. In vitro characterization revealed that the strains tolerate gastric and bile challenges and display a great adhesion capacity to human intestinal cells. The two strains mediate adhesion by different mechanisms and, when combined, synergically induce the expression of Caco-2 tight junction proteins. Moreover, growth inhibition experiments demonstrated the ability of the two strains alone and in combination to antagonize diverse Gram-negative and Gram-positive bacterial pathogens during sessile and planktonic growth. Pathogens' inhibition was mostly mediated by the production of organic acids, but neutralization experiments strongly suggested the presence of additional antimicrobial compounds in probiotic culture supernatants such as the bacteriocin Lantibiotic B, whose gene was detected in the genome of B. longum KABP042. Finally, an exploratory, observational, pilot study involving 36 infants diagnosed with at least one FGID (infant colic and/or functional constipation) showed the probiotic formula was well tolerated and FGID severity was significantly reduced after 14 days of treatment with the 2 strains. Overall, this work provides evidence of the probiotic and synergic properties of strains B. longum KABP042 and P. pentosaceus KABP041, and of their potential to treat pediatric FGIDs. Clinical Trial Registration: [www.ClinicalTrials.gov], [identifier NCT04944628].

Measuring self-efficacy in defecation: Validation and utilization of a Chinese version of the self-efficacy for functional constipation questionnaire (SEFCQ) in a pediatric population

BACKGROUND

Self-efficacy in defecation plays an important role on behavioral therapy for functional constipation (FC). There is an unmet need for valid child self-report measures of task-specific self-efficacy for pediatric FC. Our aim was to cross-culturally validate the Self-Efficacy for Functional Constipation Questionnaire (SEFCQ) and to explore the salient factor(s) of self-efficacy in defecation that correlate with anxiety and constipation symptom severity among Chinese children.

METHODS

The SEFCQ was adapted to Chinese version following the Rome Foundation guidelines for the translation of questionnaires. Two hundred and three children with FC were involved in psychometric testing. Confirmatory factor analysis was conducted to determine the structure of the SEFCQ. Construct validity was evaluated by testing the relationship between the SEFCQ and both anxiety and the Patient Assessment of Constipation Symptoms (PAC-SYM). Test-retest reliability, internal consistency, and interfactor correlation were used to evaluate reliability. Hierarchical multiple regression was used to identify salient self-efficacy for FC that correlates with anxiety and constipation symptom severity.

KEY RESULTS

Confirmatory factor analysis supports the two-factor structure of the SEFCQ. Adequate test-retest reliability (r = 0.973, p<0.001) and internal consistency (Cronbach's α = 0.871) were obtained. Both self-efficacy factors were significantly associated with anxiety (r = -0.227 to -0.350, p<0.001) and PAC-SYM (r = -0.495 to -0.602, p<0.001), with emotional self-efficacy being the most salient factor for predicting the symptom severity of constipation after controlling for sex, age, quality of parents' marriage, and family history.

CONCLUSION AND INFERENCES

The SEFCQ showed satisfactory psychometric properties. Low self-efficacy in defecation correlates with anxiety and may contribute to poor adherence to behavior change, which exacerbates the symptoms of constipation. Further study is needed to apply social cognitive intervention to increase children's self-efficacy in defecation and assess its effect on treatment outcomes.

Diagnosing and managing acute abdominal pain in children

ABSTRACT

Acute abdominal pain is a common complaint in children. The care of these patients is challenging for clinicians because presentation, diagnosis, and treatment are different in children than adults. This article describes the presentation, physical examination, diagnosis, and treatment of common causes of acute abdominal pain in children and discusses emerging trends in diagnosis and treatment.

Effectiveness of Viola Flower Syrup Compared with Polyethylene Glycol in Children with Functional Constipation: A Randomized, Active-Controlled Clinical Trial

Background

Functional constipation (FC) is a health concern that is prevalent in the pediatric population. It lowers the quality of life and increases the probability of comorbidities. As a complementary modality, herbal medicine has been considered useful in a variety of conditions. Persian medicine (PM) resources mention the Viola flower as an effective herb in treating constipation. The purpose of the current trial was to evaluate the efficacy of Viola flower syrup (VFS) compared with polyethylene glycol (PEG) in children with functional constipation.

Methods

This randomized, active-controlled, single-center trial was conducted on 140 children aged between 4 and 10 years with confirmed FC according to Rome III criteria. Participants were randomly assigned to receive either VFS or PEG for four weeks. Independent t-test and general linear model (GLM) repeated measures analysis of variance were used to determine the intergroup difference, and paired sample t-test was used to evaluate the intragroup difference.

Results

After four weeks of intervention, 133 individuals (66 in VFS and 67 in the PEG group) were analyzed. Results of both groups demonstrated significant improvement in all measured criteria at the end of the study compared to baseline (P < 0.001). No significant difference was observed between the two groups at baseline or at the end of the study (P > 0.05), except for fecal retention at baseline (P=0.028). Participants in the PEG group experienced more side effects compared to the VFS group.

Conclusion

The findings of this investigation indicated that VFS is an effective and relatively safe medication to be used in the treatment of pediatric FC.

Evaluation of constipation in children using high-resolution anorectal manometry

This prospective, cross-sectional study, conducted from July 2018 to March 2019, aimed to determine the causes of constipation using high-resolution anorectal manometry. Among 33 children enrolled in the study, 31 (94%) children presented with complaints of constipation with mean duration of 2.3 ± 2.5 years and 12 (36.4%) children also had associated complaints of faecal incontinence with mean duration of 3.5 ± 2.8 years. Seven children (21.2%) had normal high-resolution anorectal manometry parameters; anal sphincter hypotonia with decreased squeeze in one child, anal sphincter hypertonia with other abnormal parameters were noted in 25 and absent recto-anal inhibitory reflex in two. The causes of constipation determined were functional constipation in 30 (91%) children, suspected Hirschsprung's disease in two and suspected dyssynergic defecatory disorder in one. Almost 90% had functional constipation of which anal hypotension and anal hypertension may be a part of chronic functional constipation.

Correlation of endoscopic findings with Doppler ultrasound in portal hypertension in children

Aim of the study

To determine the correlation of the endoscopic findings with portal Doppler and ultrasound (USG) in children with suspected portal hypertension (PHT).

Material and methods

Eighty children with extrahepatic portal vein obstruction (EHPVO) and chronic liver disease (CLD) were included in this retrospective study conducted over a period of 1 year. All patients underwent upper gastrointestinal (GI) endoscopy and Doppler.

Results

The etiology was EHPVO in 30 (37.5%) patients, biliary atresia in 12 (15%), Budd-Chiari syndrome in 11 (13.7%), Wilson’s disease in 10 (12.5%), idiopathic CLD in 8 (10%), autoimmune hepatitis in 4 (5%), glycogen storage disease (GSD) in 3 (3.8%), non-alcoholic liver disease (NAFLD) in 1 (1.3%) and systemic lupus erythematosus (SLE) in 1 (1.3%) patient. Fifty-three (66.25%) patients had esophageal varices on endoscopy, of whom 3 (3.8%) had associated gastric varices. Portal hypertensive gastropathy (PHG) was present in 30 (37.5%) patients, of whom 10 (12.5%) had severe PHG. Forty-one (51.3%) patients had PHT on Doppler (κ correlation 0.43). Kappa correlation was 0.43 in patients with biliary atresia, 0.31 in Budd-Chiari syndrome, 0.23 in idiopathic CLD, 0.21 in CLD, and 0.05 in Wilson’s disease. All (100%) EHPVO patients and 39 (78%) CLD patients had PHT on USG. Endoscopic findings of PHT were seen in 24 (80%) EHPVO patients and 29 (58%) CLD patients. All patients with EHPVO had cavernous transformation of the portal vein on Doppler. For patients with CLD, the common Doppler findings were collaterals seen in 35 patients and reversal of flow in 12 patients.

Conclusions

Doppler ultrasound followed by endoscopy should be used to diagnose PHT in children. In children with biliary atresia, Doppler ultrasound may miss changes of PHT.

Can botulinum toxin help in managing children with functional constipation and obstructed defecation?

BACKGROUND

Functional constipation (FC) is a common pediatric healthcare problem worldwide. Obstructed defection syndrome (ODS) is frequently presented with an inability to coordinate the bowel movement with pelvic floor muscles. Botulinum toxin (BT) intraanal sphincteric injection can improve the obstructed defecation by relaxing the anal sphincter and reducing the required force to propel the stools.

PURPOSE

This study aimed to compare the changes in Rintala scores (as a mean of assessing defecatory function), in children with FC and ODS, managed by BT injection, bowel management program (BMP), and senna based laxatives (SBL), versus a control group managed by BMP and SBL only.

METHODS

Prospective randomized controlled study, started at December 2017 on 40 pediatric patients, divided into 2 equal groups (group A: managed by BMP and SBL, group B: like group A with once intraanal sphincteric BT injection) suffering from FC, ODS, with contrast enema showing persistence of ≤90 rectoanal angle (RAA) even with trials of defecation. Patients were excluded if they have neuromuscular abnormalities, hypothyroidism, previous colorectal or anal surgery. Rintala score was assessed before treatment, at 2 months, and 6 months after management.

RESULTS

The study included 18 females (45%) and 22 males (55%). Group A had equal gender distribution and mean age of 6.9 years, while group B had 12 males with mean age of 7.35 years. The mean follow up period was 11.35 months in group A and 11.6 months in group B. Mean Rintala scores of both groups at initial presentation, 2 months and 6 months follow up were: group A: 9.10, 9.40, 10.90; group B: 9.30, 10.70, 11.05 respectively, and showed no statistically significant difference (p value: 0.884, 0.294, 0.923 respectively). No complications were detected from BT injection like allergic reactions, neuromuscular urinary or lower limbs disturbances.

CONCLUSION

Intraanal sphincteric injection of botulinum toxin by the mentioned technique and dose, did not result in additional defecatory functional improvement (when assessed by Rintala score) over the routine protocol (using bowel management program and laxatives) of managing functional constipation with obstructed defecation. ANNOUNCEMENT: a preliminary report of this work was presented in the 34th Egyptian pediatric surgery association (EPSA) meeting in Cairo in November 2019.

TYPE OF STUDY

Treatment/prospective study.

LEVEL OF EVIDENCE

Level I.

Increased Incidence of Functional Constipation in Children with a History of Perianal Abscess-A Single-Center Retrospective Cohort Study

INTRODUCTION

 Functional constipation (FC) is a common gastrointestinal disorder affecting up to 30 % of children. Voluntary stool withholding (e.g., after painful defecation) with consecutive harder and larger stools can result in avoidance patterns. Perianal abscesses (PA) are associated with anal pain and painful stooling. We hypothesized that patients with PA have a higher incidence of subsequent FC compared with children without PA.

MATERIALS AND METHODS

 Between January 2010 and December 2016, we retrospectively analyzed all infants (< 365 days of life) presenting at our institution with PA or unilateral inguinal hernia repair (IH; control group). We screened the clinical charts of these patients for outpatient or inpatient visits due to FC according to ROME IV criteria between 01/2010 and 10/2019. Statistical analysis was done using chi-squared test.

RESULTS

 We included a total of 37 infants with PA and 118 with IH repair (controls). Mean age at presentation for PA was 3.7 ± 0.5 months compared with 4.2 ± 0.3 months at surgery for IH. In the PA group, 6/37 (16%) developed FC compared with 1/118 (1%) in the control group (p-value < 0.01). Patients with PA presented with FC at a mean age of 22.3 ± 4.6 months. Twenty-three of thirty-seven (62%) of PA patients underwent surgery. The development of FC in the PA group was independent of conservative versus surgical treatment (14 vs. 17%, p >0.05).

CONCLUSION

 Our study suggests that PA is associated with an increased risk of FC during the further course. Prophylactic stool softening in patients with PA may be considered to prevent subsequent FC.

[Blood and faecal lead levels in children with various functional gastrointestinal disorders]

INTRODUCTION

To investigate the blood lead levels (BLLs) and faecal lead levels (FLLs) in children with various functional gastrointestinal disorders (FGIDs) and compare them with controls.

PATIENTS AND METHODS

One hundred and 2children with FGIDs defined by the Rome IV criteria, aged 4 -18 years, and one hundred and 2sex matched healthy children were enrolled in the study. Children with FGIDs were divided into 3subgroups as functional constipation (FC) (n=36), functional abdominal pain (FAP) (n=36) and functional náusea (FN) (n=30). The lead levels were measured using atomic absorption spectrometer.

RESULTS

The median BLLs in the FGIDs group was significantly higher than in controls (5.12 and 1.77μg/dL, respectively). The BLLs were above 5μg/dL in 51,9% of children with FGIDs. There was statistically significant difference in BLLs between FC subgroup and the other subgroups (FAP and FN) (P=.003, P<.001 respectively). The FLLs in the FGIDs group was significantly higher than in controls (28.08 and 0.01μg/g, respectively). There was no significant difference in FLLs between FC subgroup and the other subgroups (P=.992, P=.989 respectively). No significant relation found between BLLs and FLLs of the FGIDs group (P =.123).

CONCLUSION

This study revealed that children with FGIDs had higher BLLs and FLLs than controls and also more than half of children with FGIDs had BLLs ≥5μg/dL which is toxic level. These results might revive the question of whether or not clinician need to evaluate routine BLLs in children with FGIDs.

Experiences of parents who give pharmacological treatment to children with functional constipation at home

Aim

The aim was to explore the lived experiences of parents who give oral and rectal pharmacological treatment to their children with functional constipation at home.

Design

A phenomenological design with a reflective lifeworld research approach that describes phenomena as they are experienced by individuals.

Methods

From January–May 2019, 15 interviews were conducted with parents of children with functional constipation with home‐based oral and rectal treatment. Parents were recruited from three different healthcare levels. Open‐ended questions were used starting from the description of a normal day with constipation treatment. Analyses were made with an open and reflective ‘bridling’ attitude.

Findings

Constipation treatment causes parents to question their parental identity and what it means to be a good parent. Forced treatment makes them feel abusive and acting against their will as parents. There is a conflict between doubt and second thoughts about the treatment, the urge to treat based on the child's needs and encouragement from healthcare professionals to give treatment.

Conclusion

As pharmacological constipation treatment can be experienced as challenging, it is important to help parents make an informed decision about how such treatment should be carried out at home. The findings reveal a medical treatment situation where parents hesitate and children resist, resulting in insecure parents who question their parental identity.

Impact

The findings point to the importance of supporting parents in treatment situations. Healthcare providers need to treat children with constipation with greater focus and more prompt management to prevent these families from lingering longer than necessary in the healthcare system.

Cortical morphometry alterations in brain regions involved in emotional, motor-control and self-referential processing in patients with functional constipation

Functional constipation (FC) is a common functional gastrointestinal disorder (FGID). Neuroimaging studies on patients with FC showed brain functional abnormalities in regions involved in emotional process modulation, somatic and sensory processing and motor control. Brain structural imaging studies in patients with FGID have also shown disease-related alterations in cortical morphometry, but whether and how FC affects brain structure remains unclear. Structural Magnetic Resonance Imaging and surface-based morphometry analysis were used to investigate the impact of FC on cortical morphometry in 29 patients with FC and 29 healthy controls (HC). Results showed that patients with FC compared to HC had significantly decreased cortical thickness in the left middle frontal gyrus (MFG), dorsomedial (DMPFC) and ventromedial prefrontal gyrus (VMPFC), right dorsal anterior cingulate cortex (dACC), left orbitofrontal cortex (OFC), posterior cingulate cortex (PCC)/precuneus, middle temporal gyrus (MTG), and supplementary motor area (SMA) (P < 0.01). Correlation analysis showed that sensation of incomplete evacuation was negatively correlated with cortical thickness in the SMA (P < 0.0001). In addition, patients with FC also had decreased cortical volume than HC in the MTG, precentral gyrus (PreCen) and precuneus/cuneus (P < 0.01), as well as decreased cortical surface area in the PreCen (P < 0.01). No correlation was found between cortical volume/surface area and behavioral measures. These findings suggest that patients with FC are associated with cortical morphometric abnormalities in brain regions implicated in somatic/motor-control, emotional processing and self-referential processing.

Assessment and management of pediatric constipation for the primary care clinician

Constipation is a common problem in pediatrics and accounts for 3-5% of all pediatric office visits and 10-25% of all pediatric gastroenterology referrals. Functional constipation accounts for about 95% of constipation cases, but "red flag" symptoms that suggest organic causes need to be considered. A diagnosis of functional constipation can be made in absence of "red flag" symptoms and a normal physical assessment. Physical assessment should focus on growth, abdominal exam, inspection of the perianal region, and examination of the lumbosacral region. Abdominal x-rays are generally not useful to differentiate between functional and organic causes of constipation. Treatment of constipation includes dietary changes, medication use, and behavioral modification. Osmotic laxatives are used as first-line treatment, and stimulant laxatives can be added if there is no improvement with osmotic laxatives. Despite improvement with laxatives, 40-50% of children with constipation experience at least 1 relapse in 5 years. Quality improvement opportunities exist for improving care of children with functional constipation by specialists partnering with primary care.

The composition of intestinal microbiota and its association with functional constipation of the elderly patients

Aim: To identify intestinal microbiota compositions in elderly functional constipation (FC) patients. Materials & methods: Fecal samples from 61 FC patients and 48 healthy age-matched volunteers were analyzed through 16S rRNA gene sequencing. Results: The intestinal microbiota compositions of FC patients were significantly different from healthy controls. Additionally, the species diversity of healthy controls was greater than that of FC patients. Indeed, the abundance of Firmicutes and Proteobacteria was significantly decreased, whereas that of Bacteroides, Prevotella, Lactococcus, Ruminococcus and Butyricimonas was remarkably increased in FC patients. Conclusion: Elderly FC patients appear to have a unique intestinal microbiota profile. Our findings should provide insight regarding the pathogenic mechanism of FC and evidence for exploring new therapeutic strategies in elderly FC patients.

Lactobacillus reuteri DSM 17938 and Magnesium Oxide in Children with Functional Chronic Constipation: A Double-Blind and Randomized Clinical Trial

OBJECTIVE

Chronic functional constipation is a frequent condition. The aim of the study was to evaluate the efficacy of the probiotic Lactobacillus (L.) reuteri DSM 17938 and magnesium oxide (MgO) for relieving chronic functional constipation in children.

STUDY DESIGN

A prospective, double-blind, placebo-controlled, randomized, and parallel-group trial was conducted in five pediatric outpatient clinics in Japan. Sixty patients who were more than six months old and under six years of age with a diagnosis of functional constipation according to Rome IV criteria were randomly divided into three groups: group A (n = 20) received L. reuteri DSM 17938 and lactose hydrate as a placebo of MgO; group B (n = 19) received L. reuteri DSM 17938 and MgO; and group C (n = 21) received a placebo of L. reuteri DSM 17938 and MgO.

RESULTS

All three groups exhibited significant improvement in defecation frequency in the fourth week compared with the baseline condition (group A: p < 0.05; group B: p < 0.05; group C: p < 0.05). The MgO group and combination group showed a significant decrease in stool consistency, but the L. reuteri DSM 17938 group did not (group A: p = 0.079; group B: p < 0.05; group C: p < 0.05). MgO significantly suppressed the presence of the genus Dialister. Defecation frequency negatively correlated with the frequency of Clostridiales-belonging bacteria among the gut microbiome.

CONCLUSIONS

L. rueteri DSM 17938 and MgO were both effective in the management of functional constipation in young children. MgO caused an imbalance in the gastrointestinal microbiome, which was not the case in the probiotic group.

Phytotherapeutic approaches to treatment and prophylaxis in pediatric practice

Medicinal plants, their extracts and herbal medicinal products occupy a growing share of medicines in the pharmacy worldwide.

Historically, the first medicines were products of plants, as well as some of the most important medicines still in use today. With the development of phytochemistry, as part of the pharmaceutical science, great progress has been made in the isolation and in determining the value of a number of biologically active substances (BAS).

Many plants have yielded pure substances (or natural products) that are applied in modern medical practice. Other compounds are potentially useful or have toxic effects.

Traditional medicine incorporating many herbal medicines remains an important (and in some cases, the only) form of treatment in some countries, with increasing use in medical practice.

On the other hand, the fact that in pediatric patients there is a limitation, mainly moral and ethical, of the number of medications to be administered due to the difficulty of conducting clinical trials in children, stimulates the use of herbal medicines of proven quality, effectiveness and safety among this group of patients.

Physiology of Electrolyte Transport in the Gut: Implications for Disease

We now have an increased understanding of the genetics, cell biology, and physiology of electrolyte transport processes in the mammalian intestine, due to the availability of sophisticated methodologies ranging from genome wide association studies to CRISPR-CAS technology, stem cell-derived organoids, 3D microscopy, electron cryomicroscopy, single cell RNA sequencing, transgenic methodologies, and tools to manipulate cellular processes at a molecular level. This knowledge has simultaneously underscored the complexity of biological systems and the interdependence of multiple regulatory systems. In addition to the plethora of mammalian neurohumoral factors and their cross talk, advances in pyrosequencing and metagenomic analyses have highlighted the relevance of the microbiome to intestinal regulation. This article provides an overview of our current understanding of electrolyte transport processes in the small and large intestine, their regulation in health and how dysregulation at multiple levels can result in disease. Intestinal electrolyte transport is a balance of ion secretory and ion absorptive processes, all exquisitely dependent on the basolateral Na⁺ /K⁺ ATPase; when this balance goes awry, it can result in diarrhea or in constipation. The key transporters involved in secretion are the apical membrane Cl^- channels and the basolateral Na⁺ -K⁺ -2Cl^- cotransporter, NKCC1 and K⁺ channels. Absorption chiefly involves apical membrane Na⁺ /H⁺ exchangers and Cl^- /HCO₃ ^- exchangers in the small intestine and proximal colon and Na⁺ channels in the distal colon. Key examples of our current understanding of infectious, inflammatory, and genetic diarrheal diseases and of constipation are provided. © 2019 American Physiological Society. Compr Physiol 9:947-1023, 2019.

Sex-related differences in resting-state brain activity and connectivity in the orbital frontal cortex and insula in patients with functional constipation

Functional magnetic resonance imaging (fMRI) has been used to investigate sex-related differences in brain abnormalities in patients with irritable bowel syndrome (IBS). Like IBS, women with functional constipation (FC) are 2.1 times as many as men. No study has been performed yet to examine sex-related differences in brain activity and connectivity in patients with FC. Here, we employed resting-state fMRI with amplitude of low-frequency fluctuation (ALFF) to investigate brain functional differences in 51 patients with FC (34 females) and 52 healthy controls (34 females). Results showed abdominal pain and abdominal distension correlated with trait (TAI) and state (SAI) anxiety ratings in the female FC group, and abdominal distension correlated with sensation of incomplete evacuation in the male FC group. Two-way ANOVA revealed sex effects on ALFF in precentral gyrus, thalamus, insula (INS), and orbital frontal cortex (OFC, PFWE  < 0.05). Post hoc test showed that the female FC group had lower ALFF than males in these brain regions (P < 0.01), and ALFF in INS and OFC was correlated with abdominal pain and difficulty of defecation, respectively. Seed voxel correlation analysis showed that the female FC group had weaker connectivity than males between INS and lateral OFC (lOFC). INS-lOFC connectivity was negatively correlated with the anxiety score in the female FC group and was negatively correlated with abdominal distension in the male FC group. These findings provide the first insight into sex-related differences in patients with FC and highlight that INS and OFC play an important role in modulating the intrinsic functional connectivity of the resting brain network showing that this role is influenced by sex.

PEG 3350 Versus Lactulose for Treatment of Functional Constipation in Children: Randomized Study

OBJECTIVES

The aim of this study was to compare the clinical efficacy and tolerance of polyethylene glycol 3350 (PEG) and lactulose for the treatment of functional constipation in infants and children.

METHODS

This randomized, multicenter study covered 12 weeks of treatment and 4 weeks of follow-up of patients with functional constipation. Patients were randomized (central randomization) to receive either PEG or lactulose. The primary end points were the number of defecations per week after 12 weeks of treatment and improvement in stool consistency of at least 2 points in the Bristol scale. The secondary end point was the presence of adverse events. Bowel movements ≥3 per week and stool consistency ≥2 (Bristol scale) were considered as successful treatment.

RESULTS

We enrolled 102 patients (M 57, F 45) aged 3.62 ± 1.42 years and 88 completed the study. At week 12, good clinical outcome was achieved in 98% (PEG) and 90% (lactulose). The PEG group had more defecations per week compared with the lactulose group (7.9 ± 0.6 vs 5.7 ± 0.5, P = 0.008) and both groups had similar frequency of defecation with pain (5% vs 5%, P = 0.9), stool retention (7% vs 10%, P = 057), large volume of stools (30% vs 31%, P = 0.9) and hard stools (7% vs 13%, P = 0.58). There were more patients with side effects in the lactulose group (15 vs 23, P = 0.02), mostly bloating and abdominal pain.

CONCLUSIONS

PEG 3350 is more effective and causes fewer side effects than lactulose in the treatment of constipation in infants and children.