infectious gastroenteritis
Start with the big picture
Management begins with oral rehydration solution, with intravenous fluids considered when shock or intractable vomiting prevents adequate oral treatment. Bloody diarrhea, frequent stools, high fever, severe pain, dehydration, extremes of age, immunocompromise, and recent antibiotic use are red flags for stool studies or medical referral. Symptomatic options depend on the presentation: loperamide is not appropriate for dysentery or toxin-mediated illness, while bismuth subsalicylate has specific safety restrictions. Antibiotics are reserved for selected severe or high-risk situations, and treatment differs by pathogen. The lesson also highlights avoiding antibiotics in suspected EHEC O157:H7 and monitoring for electrolyte disturbances.
What you'll learn
- Identify common viral, bacterial, and parasitic causes of infectious gastroenteritis.
- Recognize red flags that warrant stool studies or medical referral.
- Describe rehydration as the foundation of initial management.
- Distinguish appropriate uses and safety limits of symptomatic therapies.
- Summarize when antimicrobial therapy is considered and how treatment varies by pathogen.
Continue your study
Work through the complete notes and reinforce the topic with the study tools available in the full lesson.
