Page 77 - MNU-PM503 Parasitology practical book

Pharm D- Clinical Pharmacy Program Third Level Parasitology and virology (PM503)

Case study (12):

A 6-year-old boy presented to the paediatrician suffering from diarrhea,

abdominal pain and nausea. Blood was drawn for complete blood count. Three stool

specimens were collected and submitted for examination for ova and parasites.

Blood picture revealed haemoglobin of 11.5 gm/dl. Microscopic analysis of the

concentrated stool specimens revealed numerous bile-stained, barrel-shaped eggs. The

eggs were characterized by having clear, prominent and protruding bi-polar plugs.

QUESTIONS

1. Which parasitic ova would fit the description of those detected in the patient's

stool specimens?

2. Describe the morphological characteristics of the adult worms.

3. Which explains the common name of this parasite?

4. What is the infective stage of this parasite?

5. What is the main complication of this infection?

6. How is the diagnosis of this infection made?

7. Which other nematode egg may be confused with this parasite? Can they be

differentiated by the morphological appearance? Describe.

8. How does the patient's blood test results relate to this infection?

9. How is infection with this parasite treated?

10. How is infection with this parasite prevented and controlled?

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