Nematodes Flashcards
FNAB
Find Needle Aspiration Biopsy
Red Blood Cell stool normal hpf
1-3
Unsegmented bodies covered with cuticle cylindrical tapered at both ends
Nematodes
Have complete digestive tract (oral/ anal openings)
Nematodes
Diecious
Nematodes
Ascaris lumbricoides common name
Giant Intestinal Roundworm
Giant Intestinal Roundworm scientific name
Ascaris lumbricoides
Ascaris lumbricoides disease of poverty
Loaffler’s Syndrome
Habitat of Ascaris lumbricoides
Small intestine
Mode of transmission of Ascaris lumbricoides
Ingestion of embryonated eggs
Infective stage of Ascaris lumbricoides
Embryonated ova
A female may produce approximately 200,000 eggs per day
Ascaris lumbricoides
Fertile eggs embryonate and become infective after 18 days to several weeks
Ascaris lumbricoides
Adult worms can live 1 to 2 years
Ascaris lumbricoides
Broadly oval, Presence of mammilation, and Stained as “golden brown” in fresh stool
Fertilized ova of Ascaris lumbricoides
Outer covering: Albuminoid coat
Fertilized ova of Ascaris lumbricoides
Lecithin granules, Longer and narrower, and Thin inner shell and albuminous coat
Unfertilized ova of Ascaris lumbricoides
FECT
Formalin Ether Concentration Technique
Trichuris trichiura common name
Whipworm
Whipworm scientific name
Trichuris trichiura
Habitat of Trichuris trichiura
Large intestine (ileo-cecal region)
Mode of transmission of Trichuris trichiura
Ingestion of embryonated eggs
Infective stage of Trichuris trichiura
Embryonated ova
Straight posterior end
Adult female of Trichuris trichiura
Coiled tail - 360°
Adult male of Trichuris trichiura
(Barrel/Football shaped, Chinese-Lantern shaped, Lemon shaped) “with refractile bi-polar plugs”
Ova of Trichuris trichiura
Necator americanus common name
New World Hookworm
New World Hookworm scientific name
Necator americanus
Life cycle phase of Necator americanus
Blood-lung phase
Habitat of Necator americanus
Small intestine
Mode of transmission of Necator americanus
Skin penetration of filariform larvae
Infective stage of Necator americanus
Filariform larvae
Dew itch/Ground itch (local irritation at the site of infection)
Necator americanus
type of anemia in Hookworm
Microcytic Hypochromic Anemia
Hookworm Disease
Miner’s Disease
Blood loss caused by Hookworm per day
0.03 ml/day
S - shaped
Necator americanus
Life span: 14 years
Necator americanus
Ancylostoma duodenale common name
Old World Hookworm
Old World Hookworm scientific name
Ancylostoma duodenale
Habitat of Ancylostoma duodenale
Small intestine
Mode of transmission of Ancylostoma duodenale
Skin penetration of filariform larvae or Ingestion of contaminated food
Infective stage of Ancylostoma duodenale
Filariform larvae
Blood loss caused by Ancylostoma duodenale per day
0.15 - 0.25 ml/day
C - shaped
Ancylostoma duodenale
Life span: 1 year
Ancylostoma duodenale
Two pairs of cutting teeth
Ancylostoma duodenale
Ancylostoma braziliense common name
Cat Hookworm
Cat Hookworm scientific name
Ancylostoma braziliense
Disease of Ancylostoma braziliense
Cutaneous Larva Migrans
Mode of transmission of Ancylostoma braziliense
Skin penetration of filariform larvae
Shortest Lifespan
Ancylostoma braziliense
Infective stage of Ancylostoma braziliense
Third stage larvae
Blood Suckers
Hookworm
Roundworms
Nematodes
Round worms
Nematodes
Ancylostoma caninum common name
Dog Hookworm
Dog Hookworm scientific name
Ancylostoma caninum
Disease of Dog Hookworm
Eosinophilic enteritis
Mode of transmission of Ancylostoma caninum
Skin penetration of filariform larvae