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Helicobacter pylori infection in children. Is there specific symptomatology?
1Division of Gastroenterology, Hospital for Sick Children, Toronto, Ontario, Canada.
Insights
Helicobacter pylori (H. pylori) infection in children does not present with specific symptoms, even with differing infection rates globally. This study found no consistent clinical indicators for H. pylori in pediatric patients.
Area of Science:
- Pediatric Gastroenterology
- Infectious Diseases
- Microbiology
Background:
- Helicobacter pylori is a known cause of chronic-active gastritis in children.
- The specific clinical manifestations of H. pylori infection in pediatric populations remain unclear.
Purpose of the Study:
- To investigate the spectrum of clinical symptoms associated with H. pylori infection in symptomatic children.
- To determine if H. pylori infection correlates with specific clinical presentations in pediatric patients.
Main Methods:
- A structured questionnaire was used to collect data from symptomatic children undergoing endoscopy at two pediatric centers (Toronto, Canada and Limerick, Ireland).
- Biopsy-confirmed H. pylori infection rates and associated clinical symptoms were analyzed.
- Study populations were compared for infection frequency, clinical presentation, and demographics.
Main Results:
- H. pylori infection prevalence varied significantly between centers (13% in Toronto vs. 67% in Limerick).
- H. pylori infection was not associated with specific symptoms like abdominal pain, pain location, melena, or vomiting in either population.
- A positive association was observed between H. pylori and hematemesis in the Limerick cohort.
Conclusions:
- H. pylori infection in children lacks distinct clinical symptomatology across different geographical locations.
- Clinical presentation alone is insufficient to diagnose H. pylori infection in pediatric patients.
- Further research may be needed to understand the varied clinical impact of H. pylori.
Abstract:
Helicobacter pylori is an established cause of chronic-active gastritis in both adults and children. However, it is unclear whether H. pylori causes specific clinical symptoms. Therefore, the spectrum of clinical symptoms associated with H. pylori infection was studied in consecutive symptomatic children undergoing diagnostic endoscopy at two pediatric centers, using a structured questionnaire. In Toronto, Canada, 86 of 97 eligible children were enrolled into the study and in Limerick, Ireland, 24 of 29 were enrolled. The frequency of biopsy-confirmed H. pylori infection in Limerick, 16 of 24 (67%), was fivefold higher than in Toronto, 11 of 86 (13%, P = 0.0001). The two study populations were comparable in clinical presentation and duration of symptomatology and did not differ in age (11.9 +/- 3.5 and 11.6 +/- 2.0 years, respectively). Within both study populations H. pylori infection was not associated with specific clinical symptomatology, including duration of abdominal pain, location of pain, and history of melena or vomiting. H. pylori was positively associated with hematemesis in the Limerick group. These findings demonstrate that H. pylori infection in children is not associated with specific clinical symptomatology across varying geographical locations.