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Nematodes

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Intestinal nematodes
Intestinal nematodes
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Nematodes

  1. 1. * Nematodes  Are Round Worms With Cylindrical Body And Complete Digestive Tract  There Are 2 Categories Of Nematodes : 1. Intestinal Nematodes 2. Tissue nematodes
  2. 2. Intestinal Nematodes Enterobius ,Trichuris ,Ascaris ,Necator and Acylostoma ,Strogyloides and Trichinella Tissue Nematodes Wuchereria , Onchocerca , Loaloa
  3. 3. 1/Enterobius E. Vermicularis cause pinworm ifection LIFE CYCLE: Confined Human Ingestion of eggs hatch in small intestine larva adult Migrate to colon and mating occur Adult female migrate to perianal skin to release eggs
  4. 4. C/F; Perianal pruritus Lab . Diagnosis ; Scotch tape technique and observed micro scopically Eggs not found in the stools Treatment; Mebendazole or Pyrantel pamoate It kill adult worm not eggs
  5. 5. 2/Trichuris; Cause whipworm infectionTrichuris trichiura Life cycle; Ingestion of eggs larvae adult mate at colon Eggs pass in the feces deposite in warm moist soil form Embryo when ingested life cycle complete
  6. 6. C/F ; Asymptomatic Diarrhea Rectal prolapse Lab. Diagnosis ; Based on finding of eggs in the stool ,have lemon shape Treatment; Mebendazole
  7. 7. 3/Ascaris; Ascaris lumbricoides cause Ascariasis Life cycle; Ingestion of eggs larva migrate through gut wall blood stream lung Alveoli bronchi trachea swallowed. and in small intestine become adult live In lumen depend on ingested food eggs pass with fece
  8. 8. C/F; •Inflammtion in lung •Malnutrition •Asarcis pnemonia ; fever, cough eosinophlia •Abd.pain , intestinal obstruction Lab diagnosis; Microscopically detect eggs in stool Treatment; Mebendazole orPyrantel pamoate
  9. 9. Trichinella; Trichinella spiralis cause trichnosis LIFE CYCLE; Eating raw or undercooked meat containing larva encysted in muscle Larva excyst in small intestine , distribute through blood stream Develop in striated muscle
  10. 10. C/F; •Diarrhea •fever •Muscle pain •Periorbital edema •eosinophilia •Sub cojunctival Hage •Sings of cardiac and CNS disease •DEATH
  11. 11. Lab .diagnosis; Muscle biobsy Serological test Treatment; No treatment for disease .but for symptoms Steroid plus mebendazole thiabendazole

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