Related Experiment Video
Updated: Jun 28, 2025
Author Spotlight: Advancements in Understanding and Combatting Shigella Infections
Published on: February 9, 2024
Infectious etiology and indicators of malabsorption or intestinal injury in childhood diarrhea
Adson Santos Martins1, Samara Alves Santos1, Cláudia Alves da Silva Lisboa2
1Programa de Pós-Graduação em Farmácia, Universidade Federal da Bahia, Salvador, Brasil.
Insights
Diarrheal disease in children often involves enteropathogens and malabsorption. The acid steatocrit test effectively identifies fat malabsorption, aiding in managing childhood diarrhea and its complications.
Area of Science:
- Pediatrics
- Infectious Diseases
- Gastroenterology
Background:
- Gastroenteritis in children has multiple causes, necessitating diverse lab methods for diagnosis and severity assessment.
- Diarrheal diseases pose risks of severe nutrient deficiencies in children.
Purpose of the Study:
- To diagnose infectious causes of diarrhea in children.
- To evaluate fecal markers of intestinal integrity, specifically fat malabsorption.
Main Methods:
- Analyzed 45 children with diarrhea for enteropathogens and malabsorption markers.
- Evaluated fecal fat using traditional and acid steatocrit methods in 76 children.
Main Results:
- 40% of diarrheic children tested positive for enteropathogens, with rotavirus and Giardia duodenalis being most common.
- Steatorrhea was linked to Giardia duodenalis infections (35.7%).
- The acid steatocrit method detected 16.7% more fecal fat than the traditional method, with significant differences in children with diarrhea (p<0.0001).
Conclusions:
- Childhood diarrhea can lead to severe nutrient deficiencies.
- Steatorrhea, a sign of malabsorption, can be semi-quantitatively evaluated using the acid steatocrit stool test in diarrheic children.
- The acid steatocrit test is a valuable routine laboratory tool for assessing fat malabsorption.
Introduction:
The multifactorial etiology of gastroenteritis emphasizes the need for different laboratory methods to identify or exclude infectious agents and evaluate the severity of diarrheal disease.
Objective:
To diagnose the infectious etiology in diarrheic children and to evaluate some fecal markers associated with intestinal integrity.
Materials And Methods:
The study group comprised 45 children with diarrheal disease, tested for enteropathogens and malabsorption markers, and 76 children whose feces were used for fat evaluation by the traditional and acid steatocrit tests.
Results:
We observed acute diarrhea in 80% of the children and persistent diarrhea in 20%. Of the diarrheic individuals analyzed, 40% were positive for enteropathogens, with rotavirus (13.3%) and Giardia duodenalis (11.1%) the most frequently diagnosed. Among the infected patients, occult blood was more evident in those carrying pathogenic bacteria (40%) and enteroviruses (40%), while steatorrhea was observed in infections by the protozoa G. duodenalis (35.7%). Children with diarrhea excreted significantly more lipids in feces than non-diarrheic children, as determined by the traditional (p<0.0003) and acid steatocrit (p<0.0001) methods. Moreover, the acid steatocrit method detected 16.7% more fecal fat than the traditional method.
Conclusions:
Childhood diarrhea can lead to increasingly severe nutrient deficiencies. Steatorrhea is the hallmark of malabsorption, and a stool test, such as the acid steatocrit, can be routinely used as a laboratory tool for the semi-quantitative evaluation of fat malabsorption in diarrheic children.
Related Concept Videos
01:18Drugs Affecting GI Tract Motility: Antimicrobials as Antidiarrheal Agents
01:27Inflammatory Bowel Disease I: Ulcerative Colitis
Inflammatory bowel disease, or IBD, encompasses a group of disorders characterized by chronic inflammation or ulceration of the gastrointestinal tract.
Risk Factors
The exact cause of IBD remains unclear, although it is believed to be due to a mix of genetic, environmental, microbial, and immune factors. Genetic factors are significant in determining susceptibility to IBD, with family history being a critical risk factor. Individuals with a first-degree relative who has IBD are at...
01:30Inflammatory Bowel Disease II: Crohn's Disease
Inflammatory bowel disease, commonly known as IBD, refers to a collection of disorders that lead to persistent inflammation of the gastrointestinal tract. The two types of IBD are ulcerative colitis, which impacts the colon, and Crohn's disease, which can involve any part of the gastrointestinal segment.
Crohn's disease
Crohn's disease is a chronic, systemic inflammatory bowel disease (IBD) that predominantly affects the gastrointestinal tract. It is marked by...
01:22Appendicitis-I: Introduction
Etiology: Appendicitis can arise from various causes, primarily rooted in the obstruction of the appendix lumen. Factors contributing to this obstruction include fecal accumulation, lymphoid hyperplasia and, in...
01:23Anatomy of the Intestines
Small Intestines
The small intestine is an ~7 meter-long tube with an inner diameter of just 2.5 cm. Since most nutrients are absorbed here, the inner lining of the...
01:30Inflammatory Bowel Disease III: Diagnostic Studies and Management I-Nutritional Therapy
Diagnostic studies
A colonoscopy is the definitive screening test, distinguishing ulcerative colitis from other colon diseases with similar symptoms. During a colonoscopy test, inflamed mucosa with exudate ulcerations can be observed, and biopsies are taken to determine the histologic characteristics of the...