USMLE

Ancyclostoma and Necator

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Parasites
  1. Giardia lamblia
  2. Toxoplasma gondii
  3. Entamoeba histolytica
  4. Cryptosporidium
  5. Naegleria fowleri
  6. Trypanosoma brucei
  7. Plasmodium Overview
  8. Plasmodium Disease (Malaria)
  9. Babesia
  10. Trypanosoma cruzi
  11. Leishmania
  12. Trichomonas vaginalis
  13. Enterobius vermicularis (pinworm)
  14. Ascaris lumbricoides (giant roundworm)
  15. Strongyloides stercoralis (threadworm)
  16. Ancyclostoma and Necator
  17. Trichinella spiralis
  18. Trichuris trichiura (whipworm)
  19. Toxocara canis
  20. Onchocerca volvulus
  21. Loa loa
  22. Wuchereria bancrofti
  23. Taenia solium
  24. Diphyllobothrium latum
  25. Echinococcus granulosus
  26. Schistosoma
  27. Clonorchis sinensis
  28. Sarcoptes scabiei (Scabies)
  29. Pediculus humanis and Phthirus pubis (Lice)
  • Ancylostoma spp., Necator americanus
    • Characteristics
      • Also known as hookworms
    • Transmission
      • Found in soil contaminated with human feces
        • Larvae penetrate skin of barefoot walkers
    • Pathogenesis and Presentation
      • Skin irritation at site of skin invasion
        • Cutaneous larva migrans
          • Serpiginous tracks of intracutaneous larval migration
      • After entering the foot, migrate via blood to the lungs and through trachea
      • Larvae are swallowed and mature into adult worms in intestinal walls
        • Anemia
          • Caused by worms sucking blood from intestinal walls
      • Eosinophilia
    • Diagnosis
      • Stool microscopy (O&P)
        • Eggs are seen in stool
    • Treatment
      • Bendazoles
      • Pyrantel pamoate