Giardiasis: Symptoms and Causes
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Questions and Answers

What is the primary mode of transmission of Giardia Lambia?

  • Contaminated food
  • Unfiltered or unpurified water containing cysts of Giardia from feces (correct)
  • Direct contact with an infected person
  • Airborne transmission

What is the characteristic appearance of the cyst form of Giardia Lambia?

  • Triangular shape with two nuclei
  • Oval shape with two flagella
  • Rounded triangular shape with four flagella (correct)
  • Circular shape with no flagella

What is the primary symptom of Giardia Lambia infection?

  • Bloody diarrhea
  • Abdominal pain
  • Vomiting
  • Foul-smelling, fatty diarrhea (correct)

How does the trophozoite form of Giardia Lambia absorb nutrients?

<p>Through pinocytosis (B)</p> Signup and view all the answers

What is the diagnostic test used to detect Giardia Lambia in stool?

<p>ELISA stool antigen test (B)</p> Signup and view all the answers

What is the treatment of choice for Giardia Lambia infection?

<p>Metronidazole (B)</p> Signup and view all the answers

Study Notes

Giardia Lamblia Infection

  • Giardia infection occurs through ingestion of cysts in contaminated water, often among travelers or campers who drink unfiltered or unpurified water.
  • The infection can be spread through poor hygiene and inadequate sanitation.

Symptoms

  • Bloating, flatulence, and foul-smelling diarrhea are common symptoms of Giardia infection.
  • Steatorrhea (fatty diarrhea) occurs due to excessive mucus production, impairing nutrient absorption in the intestine, leading to deficiencies in vitamins A, D, E, and K.

Life Cycle and Morphology

  • The trophozoite form of Giardia is flagellated and has a characteristic shield-like appearance.
  • The cyst form has a rounded triangular shape and exhibits "falling leaf" motility.
  • The trophozoite has four flagella, two nuclei, and a ventral sucking disk (adhesion disk) for attachment to the intestinal wall.
  • The trophozoite absorbs nutrients from the intestinal lumen via pinocytosis.

Diagnosis and Treatment

  • Giardia infection can be diagnosed through the presence of trophozoites in stool or by ELISA stool antigen detection.
  • Metronidazole is effective in treating Giardia infection.

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Description

This quiz is about Giardiasis, a parasitic infection caused by Giardia lamblia. It covers the modes of transmission, symptoms, and effects on the body. Take this quiz to learn more about this waterborne disease.

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