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Gastroenterology & Hepatology

E. coli O157:H7 (Hemorrhagic colitis)

ICD-10 Code
A04.3

E. coli O157:H7 (Hemorrhagic colitis) - Clinical guidelines.

Clinical Presentation & Protocol

Patient Usually Complains Of

Patient presents with acute onset of severe abdominal cramping and watery diarrhea, which has progressed to grossly bloody stools (hematochezia). Denies recent travel, but reports consumption of undercooked ground beef/unpasteurized produce [insert specific food history]. No significant fever reported. Symptoms persistent for [X] days.

Clinical Examination Findings

General: Patient appears uncomfortable, mildly dehydrated. Vitals: Afebrile, normotensive. Abdomen: Soft but diffusely tender to palpation, primarily in the lower quadrants. No rebound tenderness or guarding. Bowel sounds: Hyperactive. Rectal exam: Gross blood present on glove; no masses palpated.

Treatment Protocol

Supportive care is the mainstay of treatment. Aggressive fluid resuscitation (IV/oral) to maintain perfusion. Avoid antibiotics and antimotility agents (e.g., loperamide) due to increased risk of Hemolytic Uremic Syndrome (HUS). Monitor CBC, renal function (BUN/Cr), and electrolytes. Serial monitoring for signs of HUS (pallor, oliguria, petechiae).

Detailed clinical guide coming soon.