Browsing by Author "Thapar, N."

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Functional fecal incontinence in children: epidemiology, pathophysiology, evaluation, and management
(Lippincott Williams & Wilkins, 2021) Rajindrajith, S.; Devanarayana, N.M.; Thapar, N.; Benninga, M.A.
ABSTRACT: Functional fecal incontinence (FI) is a worldwide problem in children and comprises constipation-associated fecal incontinence and nonretentive fecal incontinence. Irrespective of pathophysiology, both disorders impact negatively on the psychological well-being and quality of life of affected children. A thorough clinical history and physical examination using the Rome IV criteria is usually sufficient to diagnose these conditions in most children. Evolving investigations such as high resolution anorectal and colonic manometry have shed new light on the pathophysiology of functional FI. Although conventional interventions such as toilet training and laxatives successfully treat most children with constipation associated FI, children with nonretentive fecal incontinence need more psychologically based therapeutic options. Intrasphincteric injection of botulinum toxin, transanal irrigation and, in select cases, surgical interventions have been used in more resistant children with constipation associated FI.
Imaging in pediatric disorders of the gut-brain interactions: current best practice and future directions
(Taylor and Francis Group, 2023) Rajindrajith, S.; Hathagoda, W.; Ganewatte, E.; Devanarayana, N.M.; Thapar, N.; Benninga, M.
INTRODUCTION: Disorders of Gut-Brain Interactions (DGBI) are a common clinical problem in children and pose significant challenges to the attending pediatrician. Radiological investigations are commonly ordered to evaluate these children. AREA COVERED: This review focuses on the current best practice of using radiological investigations in DGBIs and how novel radiological investigations could revolutionize the assessment and therapeutic approach of DGBI in children. EXPERT OPINION: We believe imaging in DGBI is still in its early stages, but it has the potential to revolutionize how we diagnose and treat children with DGBI. As the understanding of the gut-brain axis continues to grow, we can expect to see the disappearance of conventional imaging techniques and the emergence of more sophisticated imaging techniques with less radiation exposure in the future which provide more clinically meaningful information regarding the gut-brain axis and its influence on intestinal function. Some of the novel imaging modalities will be able to broaden our horizon of understanding DGBI in children providing more useful therapeutic options to minimize their suffering.
Myths and misconceptions about childhood constipation
(Springer-Verlag., 2023) Rajindrajith, S.; Devanarayana, N.M.; Thapar, N.; Benninga, M.A.
Many widely held beliefs and assumptions concerning childhood constipation continue to interfere with rational management of childhood constipation. Although many still believe that constipation is not a common disease, about 9.5% of the world's children suffer from chronic constipation. Most of these children live in non-Western countries. There are major misconceptions about the etiology of constipation as a significant proportion of clinicians still believe that constipation is caused by some form an organic pathology, whereas in reality, the majority have functional constipation. Contrary to a commonly held belief that children outgrow constipation without long-term problems, there is evidence that constipation leads to significant bowel and psychological consequences and has a major impact on the quality of life which detrimentally affects future health and education. Finally, ineffective management strategies such as increasing fiber and water in the diet, and short duration of treatment owing to the fear that long-term laxative treatment leads to colonic dysfunction, interfere with effective therapeutic strategies. Conclusions: It is apparent that myths and misconception often lead to wrong assumptions regarding the distribution of the disease, its etiology, pathophysiology, and management leading to ordering incorrect investigations and ineffective therapeutic strategies while spending large sums of public funds unnecessarily. Poorly treated constipation leads to deleterious psychological consequences predisposing children to develop significant psychological damage and bowel dysfunctions. This review aims to challenge these myths about various elements of constipation by exploring the existing literature and encouraging clinicians to have a fresh look at old concepts that could interfere with the well-being of children with constipation. What is Known: • Childhood constipation is a growing problem in the world leading to significant suffering and high healthcare expenditure • Myths and misconceptions lead to poor management strategies causing psychological and bowel damage What is New: • Organic, systemic, and bowel disorders leading to constipation are uncommon, and in the majority, it arises due to deliberate fecal withholding and most investigations ordered by clinicians are not very helpful in the management • Most non-pharmacological interventions are not effective in the day-to-day management of childhood constipation. The use of laxatives is considered to be the first-line management strategy.
Navigating through 65 years of insights: lessons learned on functional abdominal pain in children
(Springer Verlag, 2024) Rajindrajith, S.; Boey, C.C.M.; Devanarayana, N.M.; Niriella, M.A.; Thapar, N.; Benninga, M.A.
In 1958, Apley and Naish authored a groundbreaking paper in Archives of Disease in Childhood, elucidating the epidemiology and risk factors of recurrent abdominal pain in children-a subject that had confounded clinicians of their time. Surprisingly, even after 65 years, there are several unanswered questions regarding the etiology, pathophysiology, and management of pediatric abdominal pain. Contrary to the prevailing notion that children naturally outgrow functional abdominal pain, compelling evidence suggests it's possible these children develop a number of clinically significant psychological issues that could profoundly impact their quality of life and, consequently, future health and educational outcomes. In this light, we aimed to comprehensively review the current literature to update the knowledge of practicing clinicians on functional abdominal pain, summarizing the evidence from the last 65 years.Conclusion: The enduring unanswered questions surrounding childhood abdominal pain continue to challenge clinicians, resulting in unnecessary investigations, thereby contributing to substantial healthcare expenditures. It is also evident that children with long-standing symptoms would progress to adulthood with the potential to develop irritable bowel syndrome and many psychological disturbances. Several key interventions using pharmacological agents, such as amitriptyline, showed that some of these drugs are no more effective than the placebo in clinical trials. Several research during the recent past suggest that psychological interventions such as gut-directed hypnotherapy alleviate symptoms and ensure better prognosis in the long run. Therefore, clinicians and researchers must join hands to explore the pathophysiological mechanisms underpinning functional abdominal pain and novel therapeutic strategies to ensure the well-being of these children. What is Known: • Functional abdominal pain disorders are common among children, with a worldwide prevalence of 13.5% of children suffering from at least one of these disorders • These disorders contribute to a significant reduction in the quality of life of affected children and their families and lead to an array of psychological problems What is New: • The biological basis of functional abdominal pain is becoming more explicit, including complex interactions between altered microbiome, deranged motility, and psychological dysfunction with gut-brain interactions • Novel approaches giving minimal emphasis on pharmacological interventions and exploring psychological interventions are showing promising results.
Neurogastroenterology and motility disorders in pediatric population
(Elsevier, 2019) Rajindrajith, S.; Devanarayana, N.M.; Chanpong, A.; Thapar, N.
Motility of the gastrointestinal tract plays a critical role in the maintenance of its many physiological functions. These motility patterns, which vary along the gastrointestinal tract, are achieved by highly coordinated interactions between the neuromusculature of the gut (smooth muscle layers, enteric nervous system, interstitial cells of Cajal), central nervous system, autonomic nervous system, hormones, peptides and the microbiome. Other external factors such as diet, and age related changes in the gastrointestinal tract also, ultimately, affect gastrointestinal motility. A subtle change in any of the above factors could significantly impact on gastrointestinal function leading to pediatric gastrointestinal motility disorders. Here, we review common motility disorders in children and provide an indepth understanding of the pathophysiology and management of these problem. © 2020 Elsevier Inc. All rights reserved.