🧫 Chapter 245 · Shigella (Bacillary Dysentery)

Nelson Textbook of Pediatrics 22nd Edition | Shigella species (S. sonnei, S. flexneri, S. dysenteriae), dysentery (bloody diarrhea, fever, abdominal cramps), Shiga toxin (S. dysenteriae type 1 β†’ HUS), treatment (azithromycin, ceftriaxone), antibiotic resistance (fluoroquinolone, macrolide), prevention (hand hygiene).

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πŸ“‹ 30 Clinical Scenarios β€” Shigella (Nelson Ch 245)

πŸ“‡ High‑Yield Review Cards (Shigellosis)

🩺 Shigellosis Clinical Scenarios

Select a scenario for diagnosis and management.

πŸ“‹ Stepwise Management of Shigellosis

    πŸ“Š CDC Recommended Treatment for Shigellosis (Children)

    DrugDoseDurationNotes
    Azithromycin12 mg/kg on day 1 (max 500 mg), then 6 mg/kg/day (max 250 mg) on days 2-55 daysDrug of choice (increasing resistance in MSM, international travel)
    Ceftriaxone50 mg/kg IM/IV once daily (max 1.5 g)3-5 daysAlternative for severe disease or unable to tolerate oral
    Ciprofloxacin15 mg/kg/dose PO BID (max 500 mg/dose)3 daysIncreasing resistance; use only if susceptible
    TMP-SMX4 mg/kg TMP component BID5 daysHigh resistance; not recommended empirically

    ⚑ Reflex Prompts β€” Shigella Decisions

    πŸ“– Summary: Shigella β€” Nelson Ch 245