Samantha Margaret Arrizabalo

Dr. Samantha Margaret Arrizabalo


Research Focus & Metrics

Academic Career Length

3Years (2024-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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1 November 2024 in Neurogastroenterology & Motility
Verified
Journal Article
Open access
CVCarlos Velasco‐Benitez
Carlos Velasco‐Benitez
DVDaniela Velasco
Daniela Velasco
ABAmber Balda
Amber Balda
SASamantha Margaret Arrizabalo
Samantha Margaret Arrizabalo
MSMiguel Saps
Miguel Saps
Background: Functional diarrhea (FDr) is a common disorder in toddlers and adults. In children, the Rome criteria define FDr as a disorder of children younger than 5 years old exclusively. However, in clinical practice, school‐aged children and adolescents sometimes consult for symptoms that mimic the diagnosis of FDr. We conducted a study aimed at assessing the prevalence of FDr in school‐aged children and adolescents.Methods: A cross‐sectional study was conducted in children aged 8–18 years from two schools in Colombia. Children completed self‐report validated questionnaires to diagnose disorders of gut‐brain interaction (DGBI) per Rome IV (QPGS‐IV) for their age group and the questions related to FDr from the Rome IV questionnaire for infants and toddlers.Key Results: After excluding children with organic diseases and IBS‐D, 981 participants were included (female 53.8%, White 24.7%, Indigenous 10.9%, mixed race 52.6%). Of the 981 participants, 325 (33.1%) had a DGBI. Of these, 17 children (5.2%) were diagnosed with FDr (3 participants 8–12 years; 14 participants 13–18 years). FDr was more prevalent among White children compared to non‐White children (mixed race, Black, and Indigenous) (p = 0.01).Conclusion & Inferences: Despite the absence of FDr in the Rome IV criteria for children and adolescents, 1.7% of children aged 8–18 years likely have FDr. This study suggests that FDr does occur in children and adolescents. If confirmed in future studies, the diagnosis of FDr should be considered for inclusion in future editions of the Rome criteria for children of all ages.

18 June 2024 in Children
Verified
Journal Article
Open access
PDF file
MSMiguel Saps
Miguel Saps
CVCarlos Alberto Velasco-Benitez
Carlos Alberto Velasco-Benitez
DVDaniela Velasco-Suarez
Daniela Velasco-Suarez
MBMaura Alvarez Baumgartner
Maura Alvarez Baumgartner
ABAmber Balda
Amber Balda
SASamantha Margaret Arrizabalo
Samantha Margaret Arrizabalo
Bothersome gastrointestinal (GI) signs/symptoms, including abdominal pain, distension, nausea, and flatulence, are common in children. A diet low in fermentable oligosaccharides, disaccharides, monosaccharides, and polyols (FODMAPs) is frequently recommended for children with GI symptoms. Currently, there are no studies on the effect of FODMAPs in healthy schoolchildren. In this cross-sectional study, schoolchildren reported an association between FODMAPs and GI symptoms through a standardized questionnaire and images of 20 common staples known to be rich in FODMAPs. A total of 208 schoolchildren aged 8–18 years old participated. A proportion of 38.0% of children reported GI symptoms, with abdominal pain (33%) being the most common complaint followed by abdominal distension (24%) and nausea (23%). The majority of children who reported intolerances to FODMAP-containing foods were intolerant to less than two food groups (76%). While vegetables and legumes (26%), particularly black beans (11%) and onions (7%), emerged as the most common group of triggers, milk (12%) stood out as the single food most frequently associated with GI symptoms. In conclusion, there was a high prevalence of FODMAPs intolerance among schoolchildren. Larger studies are recommended to confirm these findings and to inform possible dietary interventions to reduce the effect of FODMAPs on schoolchildren.

15 February 2025 in Children
Verified
Journal Article
Open access
PDF file
SASamantha Margaret Arrizabalo
Samantha Margaret Arrizabalo
CVCarlos Alberto Velasco-Benitez
Carlos Alberto Velasco-Benitez
DVDaniela Velasco-Suarez
Daniela Velasco-Suarez
RGRafael Giner
Rafael Giner
MSMiguel Saps
Miguel Saps
Background/Objectives: Functional constipation (FC) is diagnosed using the Rome IV criteria, which require at least two of seven symptoms for diagnosis. Clinical trials evaluating FC treatments commonly use bowel movement frequency, stool consistency, and fecal incontinence as primary endpoints. However, there is limited data on whether these endpoints accurately represent the symptom distribution in children with FC. This study assessed the frequency of each criterion in a large children’s community sample to determine whether commonly used clinical trial endpoints accurately reflect symptom distribution. Methods: A cross-sectional study of school children aged 8–18 years was conducted across seven Colombian cities. Participants completed the Pediatric Gastrointestinal Symptoms Rome IV Questionnaire (QPGS-IV). The prevalence of FC and the distribution of diagnostic criteria were analyzed, calculating the percentage of each criterion. Results: 6611 children completed the questionnaires. FC was diagnosed in 12.8% of participants, making it the most common disorder of gut–brain interaction. The most reported criteria were fewer than two stools per week (66.1%) and painful bowel movements (65%), while fecal incontinence was uncommon (6.9%). 60.5% of participants met only two criteria, with two or fewer defecations per week and painful bowel movements being the most common combination. Conclusions: This study reveals significant variability in Rome IV criteria prevalence for FC, highlighting disparities between the most common endpoints in clinical trials and symptom distribution in a community-based cohort. Painful bowel movements emerged as a critical diagnostic component but remain underutilized as an endpoint in pediatric trials. These findings suggest the possible need to reassess endpoint selection in clinical trials.

20 August 2024 in Journal of Pediatric Gastroenterology and Nutrition
Verified
Journal Article
Closed access
MSMiguel Saps
Miguel Saps
SASamantha Margaret Arrizabalo
Samantha Margaret Arrizabalo
CVCarlos A. Velasco‐Benitez
Carlos A. Velasco‐Benitez

10 September 2025 in Children
Verified
Journal Article
Open access
PDF file
MSMiguel Saps
Miguel Saps
SASamantha Margaret Arrizabalo
Samantha Margaret Arrizabalo
JGJose M Garza
Jose M Garza
Background: Disorders of gut–brain interaction (DGBI) have a significant impact on the quality of life of children and families. Forty percent of children with recurrent abdominal pain continue to have symptoms into adulthood. Specialized programs for the transition of adolescents with DGBI to adult care are scarce. There are no widely accepted guidelines for transition of care. Identifying risk factors for persistence of symptoms into adulthood is key to identifying the optimal population that should be part of such programs and guidelines design. Methods: A narrative comprehensive review was conducted using predefined keywords to identify risk factors for persistent DGBI in children/adolescents. Results: Female sex, psychological distress, family history of DGBI, and certain comorbidities had stronger evidence for persistence, whereas other risk factors rely on limited data. Conclusions: It is suggested that transition programs should focus on adolescents presenting with multiple coexisting risk factors. The program should at least include pediatric and adult neurogastroenterologists, dieticians, psychologists, and social workers. Tertiary prevention through psychological support, school-based programs, and management of anxiety and sleep disturbances may reduce the persistence of symptoms. Prospective studies should refine risk stratification and guide transition strategies.

11 April 2025 in American Journal of Gastroenterology
Verified
Journal Article
Closed access
APAishwarya Palorath
Aishwarya Palorath
CNClaire Narang
Claire Narang
LFLourdes Forster
Lourdes Forster
OCOneith Cadiz
Oneith Cadiz
ALAmber Langshaw
Amber Langshaw
MSMiguel Saps
Miguel Saps
INTRODUCTION: Acute gastroenteritis (AGE) is the most common disease predisposing to the development of disorders of gut-brain interactions (DGBIs) in adults (postinfectious DGBI [PI-DGBI]). There is paucity of data on incidence and risk factors for the development of PI-DGBI in children. The aims of this study are to (i) assess whether AGE predisposes children to the development of PI-DGBI and (ii) assess whether the severity of AGE is associated with the development of PI-DGBI. METHODS: This was a prospective, controlled, cohort study. Children with recent AGE (cases) and siblings (controls) were followed for 6 months. We assessed DGBIs using a validated questionnaire (QPGS IV) per Rome criteria. RESULTS: Forty-nine cases and 55 controls were enrolled; 4 cases (8.1%) and 1 control (1.8%) had a previous diagnosis of DGBI. At 3 months, 10 cases (20.4%) were diagnosed with DGBI vs 1 (1.8%) control ( P = 0.00). Among children without a history of DGBI before the AGE, 6 (12.2%) cases vs 0 control were diagnosed with DGBI ( P = 0.01) at follow-up. At 6 months, 5 cases (1 lost to follow-up) vs 0 control had persistent DGBI ( P = 0.03). Severity of AGE was correlated with PI-DGBI (ρ = 0.707, P = 0.00). DISCUSSION: Children with AGE are more likely to develop DGBIs compared with controls. AGE symptom severity is associated with PI-DGBI.