Ascaris

Most common intestinal nematode

Prevention & control of Ascariasis

• Education

• Clean waste management

• Clean fruits & vegetables well

• Proper sanitary disposal of stool

• Mass chemotherapy

Primary treatments for Ascariasis

• Albendazole

• Mebendazole

• Intravenous hydration

• Nasogastric suctioning

• Electrolyte monitoring

Pathogenesis of Ascaris

• Bowel obstruction

• Vomiting

• Pneumonitis (during lung infection)

• Intestine perforation

• Coughing

Diagnostic test for Ascaris that requires one drop of Normal Saline Solution on 2 mg of stool sample

• Direct Fecal Smear

• Kato-Katz Technique/Cellophane Thick Smear Method

• Formalin-Ether Concentration Technique

• Radiography

• Cholangiograms

Infertile egg of Ascaris is how many microns

• 45-70

• 88-94

Is Ascaris capable of heart-lung migration?

• Yes

• No

How many eggs does female Ascaris lay daily?

• 2 million

• 200,000

• 20,000

• 200

Where do Ascaris eggs hatch?

• Duodenum

• Jejunum

• Ileum

• Colon

Infective stage of Ascaris that happens 2-3 weeks

• Embryonated egg

• Infertile (Unfertilized) egg

• Fertile (Fertilized) egg

• Larva