Wednesday, January 24, 2024

Perianal specimen diagnose.. Entrobius vermicularis

Perianal specimen diagnose:

  • A. Trichomonas vaginalis.
  • B. Tainia saginata.
  • C. Entrobius vermicularis.
  • D. Enta.histolytica.

A perianal specimen is used to diagnose C. Entrobius vermicularis (pinworms), not the other options listed.

Here's why:

- Trichomonas vaginalis (A):

This is a sexually transmitted protozoan infection that affects the vagina and urethra, not the perianal area.

- Taenia saginata (beef tapeworm) (B):

This intestinal parasite causes tapeworm infections but is diagnosed through stool examination, not perianal swabs.

- Entamoeba histolytica (D):

This protozoan causes amoebic dysentery and is also diagnosed through stool examination, not perianal swabs.

Entrobius vermicularis (pinworms):

  • These small, white worms (around 10mm long) live in the intestines and lay eggs around the anus at night.
  • Perianal swabs or tape tests are used to collect the eggs, which are then viewed under a microscope for diagnosis.
  • Symptoms of pinworm infection include perianal itching, especially at night, restless sleep, and irritability.
Therefore, if you suspect a pinworm infection, a perianal specimen is the most appropriate diagnostic test.

Additional tips:

  • Perianal specimens should be collected first thing in the morning before showering or using the toilet.
  • The swab or tape should be applied firmly to the perianal area and then carefully placed in a container for transport to the laboratory.
  • Treatment for pinworm infections is usually a single dose of medication prescribed by a doctor.