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Gastrointestinal infection — Clinical Guidelines

Overview

Gastrointestinal infections encompass a wide range of pathogens including bacteria (e.g., Escherichia coli, Staphylococcus aureus), viruses, parasites, and fungi (e.g., Histoplasma capsulatum), causing significant morbidity and mortality worldwide, particularly in children and travelers 1 3 9 12.

Diagnosis

Clinical Symptoms: Diarrhea, abdominal pain, nausea, vomiting 7 9.

Laboratory Tests: Stool cultures, microscopy for parasites, PCR for viral pathogens 4.

Specific Tests: Serology for Histoplasma in suspected cases of gastrointestinal histoplasmosis 12.

Management

First-Line Treatments:

- Bacterial Infections: Appropriate antibiotics based on sensitivity (e.g., fluoroquinolones for traveler's diarrhea) 4. - Supportive Care: Oral rehydration solutions to prevent dehydration 7.

Adjunctive Treatments:

- Vitamin C Supplementation: Consider in cases where ETEC infection impairs ascorbic acid uptake 1. - Antimicrobial Stewardship: Optimize antibiotic use to reduce resistance 5.

Special Populations

Pediatrics: High susceptibility to enteric pathogens; focus on prevention and early hydration 3 9.

Elderly: Increased risk of complications; careful monitoring of antibiotic use and nutritional support 8.

Comorbidities: Tailored management considering underlying conditions; enhanced infection control measures 6.

Key Recommendations

Implement antimicrobial stewardship programs to optimize antibiotic use and reduce resistance (Evidence: Strong 5).

Prioritize hydration and electrolyte management in all patients with gastrointestinal infections (Evidence: Moderate 7).

Consider the impact of ETEC infection on nutrient absorption, particularly ascorbic acid, in managing traveler's diarrhea (Evidence: Moderate 1).

Enhance infection control practices in endoscopy units to prevent nosocomial gastrointestinal infections (Evidence: Moderate 6).

Educate travelers and athletes on preventive measures against gastrointestinal infections, including hygiene and food safety (Evidence: Expert opinion 7).

References

1 Subramenium GA, Sabui S, Marchant JS, Said HM, Subramanian VS. Enterotoxigenic Escherichia coli heat labile enterotoxin inhibits intestinal ascorbic acid uptake via a cAMP-dependent NF-κB-mediated pathway. American journal of physiology. Gastrointestinal and liver physiology 2019. link 2 Flett KB, Bousvaros A, Carpenter J, Millrinen CE, Martin P, Sandora TJ. Reducing Redundant Anaerobic Therapy Through Spaced Education and Antimicrobial Stewardship Interventions. Journal of the Pediatric Infectious Diseases Society 2018. link 3 Medgyesi DN, Brogan JM, Sewell DK, Creve-Coeur JP, Kwong LH, Baker KK. Where Children Play: Young Child Exposure to Environmental Hazards during Play in Public Areas in a Transitioning Internally Displaced Persons Community in Haiti. International journal of environmental research and public health 2018. link 4 Ferrah N, Leder K, Gibney K. Review of the causes and management of chronic gastrointestinal symptoms in returned travellers referred to an Australian infectious diseases service. Australian family physician 2016. link 5 Bedini A, De Maria N, Del Buono M, Bianchini M, Mancini M, Binda C et al.. Antimicrobial stewardship in a Gastroenterology Department: Impact on antimicrobial consumption, antimicrobial resistance and clinical outcome. Digestive and liver disease : official journal of the Italian Society of Gastroenterology and the Italian Association for the Study of the Liver 2016. link 6 Hookey L, Armstrong D, Enns R, Matlow A, Singh H, Love J. Summary of guidelines for infection prevention and control for flexible gastrointestinal endoscopy. Canadian journal of gastroenterology = Journal canadien de gastroenterologie 2013. link 7 Boggess BR. Gastrointestinal infections in the traveling athlete. Current sports medicine reports 2007. link 8 Segal R, Dan M, Pogoreliuk I, Leibovitz A. Pathogenic colonization of the stomach in enterally fed elderly patients: Comparing percutaneous endoscopic gastrostomy with nasogastric tube. Journal of the American Geriatrics Society 2006. link 9 Lewis LG, Cohen MB. Gastrointestinal infection in children. Current opinion in pediatrics 1993. link 10 Werts C, O'Callaghan D, Hofnung M, Charbit A. Immunological relatedness of the LamB proteins among members of Enterobacteriaceae. Journal of general microbiology 1993. link 11 Archer PW, Heijbel H, Istre GR. An outbreak of gastrointestinal illness caused by Staphylococcus aureus in a prison population. The Journal of the Oklahoma State Medical Association 1989. link 12 Miller DP, Everett ED. Gastrointestinal histoplasmosis. Journal of clinical gastroenterology 1979. link

Gastrointestinal infection