Trichuris

Question 1

Common name of Trichuris Trichiura

Answer 1

Whipworm

Question 2

Disease type of Trichuris

Answer 2

Trichuriasis

Question 3

Morphology of Trichuris Trichiura

Answer 3

● Flesh colored or pinkish slender.
→ Smaller than Ascaris
→ Anterior/ head: hair-like or whip-like; manipis
→ Posterior/ tail: thick and fleshy
→ Stichocytes: glandular cell where esophagus is
embedded.

Question 4

Differentiation of Female and Male Trichuris Trichiura

Answer 4

● Female: straight and blunt tails
● Male: curved tail.

Question 5

OVA Morphology

Answer 5

● Barrel-shaped, lemon-shaped, football-shaped,
Japanese lantern in appearance w/:
→ Thick, smooth, double layer, yellowish-brown
eggshells
→ Two prominent bipolar plugs protruding at both
ends. (parang sisig plate)

Question 6

Life Cycle of Trichuris Trichiura

Answer 6

Habitat - Large Intestine
Infective Stage - Embryonated egg
Diagnostic Stage - Unembryonated egg
Mode of Transmission - Ingestion
Portal of Entry - Mouth
Portal of Exit - Anus via feces

Question 7

Life Cycle of Trichuris Trichiura

Answer 7

Large Intestine: Adult - Defecation: Unembryonated Ova + Stool - Soil: Unembryonated to Embryonated - Ingestion - Small Intestine: Larva

Question 8

Difference of Ascaris and Trichuris Life Cycle

Answer 8

Trichuris larva does not migrate from other organs, it goes straightly to Small Intestine

Question 9

Pathology and Clinical Manifestations of Trichuris

Answer 9

● Chronic impairment of host’s nutritional status should be
suspected when the following are observed:
→ Diarrhea
→ Hypoalbuminemia
→ Iron deficiency anemia (IDA)
● May also invade the appendix and cause acute
appendicitis.

Question 10

Due to Frequent loos bowel movement that leads to loss of muscle tone of the anal sphincter. It is also due to Heavy infections.

Answer 10

Rectal Prolapse

Question 11

Diagnosis of Trichuris Trichiura

Answer 11

1. Direct Fecal Smear (DFS)
2. Kato-Thick
3. Kato-Katz
4. Concentration Techniques
   → In heavy infections, stool is frequently mucoid and
   contains Chartcot-Leyden Crystals.
   o Fragments of eosinophils (WBC increase
   = infection)

Question 12

Treatment for Trichuris Trichiura

Answer 12

1. Pyrantel pamoate
2. Mebendazole
3. Albendazole

Question 13

Epidemiology of Trichuris Trichiura

Answer 13

● Most common in warm, moist regions.
● Next most common intestinal roundworm to Ascaris
especially in urban disadvantage communities.
● It has been observed that Trichuris eggs in the soil are
less resistant to adverse conditions than Ascaris eggs.

Question 14

Prevention and Control

Answer 14

Same as Ascaris Lumbricoides

Question 15

AMPHIDS

Answer 15

All Nematodes [Anterior Sensory Organs]

Question 16

PHASMIDS

Answer 16

AFASHED
Ascaris
Filarial Worm
Angyostrongyloides
Stringyloides
Hookworms
Enterobious
Drancunculus
[Sensitive since both anterior and posterior have sensory organs]