Trichomonas

Question 1

Q. Write down the mode of transmission of Trichomonas vaginalis. [DU-17M]

Answer 1

Mode of transmission: Sexual intercourse.

Pathogenicity/ Clinical features:

In women: A watery, foul-smelling, greenish vaginal discharge accompanied by itching and burning sensation.
In men: Infection is asymptomatic. About 10% of man have urethritis.

Question 2

Q. Write down the laboratory diagnosis of trichomoniasis. [DU-14J, SMU-23M,

Answer 2

Specimen collection:

In female, high vaginal swab.
In male, morning urethral discharge.

Microscopic examination:

Slide prepared with normal saline:
Findings - Trophozoite can be found.
Wet mount preparation of vaginal or prostatic secretion:
Finding - the pear shaped trophozoite with a typical jerky motion.

Serological test: No role.

Question 3

Lab diagnosis of t. Vaginalis

Answer 3

Specimen :
In female: vaginal swab
Male: early morning vaginal discharge
M/E; slide prepared with normal saline: trophozoite can be formed
Wet mount preparation of vaginal or prostatic secretion shows:
Pear shaped trophozoite with typical Jerky movement

Question 4

Q. Mention the morphological form of Trichomonas vaginalis with diagram. [DU-22N]

Answer 4

Morphology :
Pear shaped.
Only trophozoite form and no cystic stage.
A central nucleus and four anterior flagella.
It has an undulating membrane that extends about two-thirds of its length.

Question 5

Draw 2 morphological forms

Answer 5

Pear shaped.
Only trophozoite form and no cystic stage.
A central nucleus and four anterior flagella.
It has an undulating membrane that extends about two-thirds of its length.