Intestinal disorders after acute diarrhea in young children and their coprological predictors
Authors: Bilykh V.M. , Ivanko О.G. 
Published: November 2022

Background. After acute diarrhea in young children, intestinal disturbances and even chronic functional intestinal diseases may occur. To date, no pathogenetically based criteria have been found that would indicate the probability of chronic intestinal disorders, just as the mechanisms of their occurrence after acute diarrhea have not been fully elucidated. The objective: to evaluate the frequency and nature of bowel disorders in children of the younger age group within 6 months after a stay in hospital for acute diarrhea and to establish their relationship with coprological indicators — fecal calprotectin (FCР), the content of carbohydrates (reducing substances, RS), lactic acid (LA) and short-chain fatty acids (SCFA) — acetic, propionic and fatty (butyric). Materials and methods. The study involved 47 children aged 6–24 months who were hospitalized for acute diarrhea. Acute enterocolitis (group I) was diagnosed in 18 patients and was caused by Campylobacter jejuni in 12 cases, Escherichia coli O-18 and Escherichia coli O-44 in 3, Salmonella enteritidis in 2 and Yersinia enterocolitica in one case. Rotaviral gastroenteritis (group II) was diagnosed in 11 patients. Another 11 children had acute symptomatic (parenteral) diarrhea (group III) against the background of intestinal infection — acute otitis, pneumonia, pyelonephritis. In 7 children, diarrhea was classified as functional digestive disorder (group IV). Routine clinical tests were supplemented with an examination of feces for the presence of intestinal parasites, Clostridium difficile A/B toxins, adenoviruses, human hemoglobin, RS, FCP, SCFA and LA. Results. Six-month follow-up established that 14 of 18 children in group I had permanent or temporary loose stools. These complaints in 13 cases were combined with episodes of abdominal pain similar to intestinal colic. The same complaints were much less frequent in children of group II (6 and 3 of 11, respectively), group III (4 and 2 of 11) and group IV (only in 2 of 7 children). The rank correlation analysis did not reveal any significant relationships between the intensity and duration of complaints and FCP, RS, LA, and SCFA in patients of groups I and II. On the contrary, in group III, there were multiple correlations of complaints with FCP, RS, LA, and SCFA. In group IV, the association of loose stools with an increase in LA and acetic acid has been found. Conclusions. According to the 6-month follow-up, 57 % of young children with acute diarrhea complained of loose stools and/or recurrent abdominal pain after discharge from the hospital. Most often, intestinal disorders were detected in children who had acute bacterial enterocolitis. There were no correlations between the intensity of post-infectious (bacterial or viral) disorders with FCP, RS, LA and SCFA during hospitalization. In contrast, such associations were numerous in children with symptomatic (parenteral) and functional diarrhea. It was suggested that the studied coprological parameters can be used to predict the state of the intestine after acute diarrhea.