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Microbiology -Medical > Schistosoma > Flashcards

Schistosoma Flashcards

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USMLE® Step 1 flashcards Biology 101 flashcards
1
Q

Schistosoma are called ??

A

Blood flukes

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2
Q

S haematobium disease ??

A

As urinary bladder - UTI

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2
Q

Blood flukes example ??

A
  1. S mansoni
  2. S japonicum
  3. S haematobium

576

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3
Q

How to differentiate the 3 species of schistosoma ?

A

Microscopic appearance of eggs

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3
Q

S japonicum
S mansoni disease ???

A
  1. Hepatomegaly
  2. Massive splenomegaly
  3. Gastrointestinal hemorrhage
  4. Esophageal varices bleeding
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4
Q

Disease caused by schistosoma ??

A

Schistosomiasis
/ Bilhaeziasis

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5
Q

S mansoni egg ??

A

Prominent lateral spine

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5
Q

S japonicum egg ?

A

Very small lateral spine

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6
Q

S haematobium egg ??

A

Terminal spine

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7
Q

When human get infected by schistosoma ?/

A

Free swimming , fork tailed cercariae penetrate the skin

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8
Q

Larvae of s is called ??

A

Schistomomula

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9
Q

Ciliated larvae is called ??

A

Miracidia

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10
Q

Life cycle of schistosoma ??

A

Cercariae - Larvae - Blood - S meseteric A - Portal circulation - Liver - Mesenteric venules - ( S h reach bladder through venous plexus - Female layed eggs in their respective sites

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11
Q

Complications of schistosomiasis
Bilhaeziasis ?

A
  1. Hematuria
  2. Ca of the bladder
  3. Granuloma in the wall of bladder
  4. Fibrosis in the wall of bladder
  5. Superimposed basterial injury UTI
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12
Q

Pathogenesis of S heamatobium ??

A

Eggs in the wall of bladder - Granuloma & fibrosis - Ca of the bladder

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12
Q

Tx of all species of schistosoma ?

A

Praziquantel

13
Q

Pathogenesis of S japonicum ??

A

Damage the wall of SI & LI - By proteolytic enzymes

14
Q

Pathogenesis of S mansoni ???

A

Dmagae the wall of colon - inf mesenteric venules

14
Q

Chronic stage clinical findings of S ??

A

Diseases by S

15
Q

Acute stage clinical findings of schistosoma ??

A
  1. Itching
  2. Dermatitis
  3. Fever
  4. Chills
  5. Diarrhea
  6. Lymphadenopathy
  7. Hepatosplenomegaly
16
Q

Lab finidings of S ??

A
  1. Ova in the feces / urine
  2. Eosinophilia
  3. Large characteristics spine

Microbiology -Medical (29 decks)

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