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Updated: Jul 21 2017

Botulism (Adult)

Snapshot
  •  A 43-year-old male presents to the clinic with acute onset nausea, weakness and blurred vision. Physical exam reveals bilateral ptosis, fixed and dilated pupils and opthalmoplegia, with symmetrical limb weakness and absent tendon reflexes. Patient admits to recently eating home canned green beans. He is admitted to the hospital for further monitoring.
Introduction
  • Classification
    • bacteria
      • gram-positive bacilli
        • spore-forming
          • Clostridium
            • C. botulinum 
Presentation
  • Adult
    • preformed toxin ingested
      • autolysis of bacteria releases toxin into food
      • toxin is not actively secreted
      • toxin ia protease that cleaves SNARE proteins required for acetylcholine release at the neuromuscular junction 
    • reversible, flaccid paralysis
    • weakness, dizziness, blurred vision- Triple D's
      • Diplopia
      • Dysphagia
      • Dysphonia
  • Infant
    • spores ingested from household dust or honey
    • spores from the environment where soil botulinum spore counts are high, including but not limited to Utah, California, and Pennsylvania
    • toxin produced in gut
    • constipation, limpness, reversible flaccid paralysis
  • Wound
    • traumatic implantation of spores
      • seen in drug users
    • in vivo production of toxin
    • symptoms similar to ingested toxin but without GI symptoms
    • fever and leukocytosis
Evaluation
  • Adult
    • serum analysis for toxin
  • Infant
    • presumptive clinical diagnosis
    • confirm with stool studies for spores and toxin
  • Wound
    • isolation of spores from wound
Treatment
  • Adult
    • respiratory support
    • equine derived antitoxin
  • Infant
    • respiratory support
    • bivalent human derived antitoxin
    • use no antibiotics (may worsen or prolong)
  • Wound
    • antitoxin
    • respiratory support
    • amoxicillin
Prevention, Prognosis and Treatment
  • Good home canning techniques destroy spores
  • Avoid honey in infants < 12 months
  • Avoid injection of street drugs
  • Prompt medical evaluation of infected wounds
Question
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