ENTEROBIUS VERMICULARIS Flashcards
What the people that most likely to be infected with pinworm ?
school-or preschool-children and in crowded conditions
What is the species that can transfer pinworm
Human
Pinworm eggs can survive in the indoor environment
2-3 week
Commen name is
Pinworm
MORPHOLOGY for adult female
unsegmented spindle shaped worm with a long pointed straight tail 2 cuticular elevation (alae) double bulbed esophagus a uterus filled with eggs
Size for adult-female;
8-15mm
Morphology for Adult male worm
shape: unsegmented cylindrical worm with: a tail end turning to the ventral side (curved) 2 cuticular elevation (alae) double bulbed esophagus
size for female
2-5mm
Morphology for Egg:
one side is flatter than the other like D shape the size: 50-60 x 20-30µm with thick wall And colorless and transparent
the content: usually with mature larva
What happened after ingestion of infective eggs
the larvae hatch in the small intestine, then develop into mature adults in the large intestine
The time interval from ingestion of infective eggs to oviposition by the adult females is about
One month
The time to the egg become mature
4 to 6 hours
What is the parasite that caused severe itching due to female pinworms migrating, especially at night, which may lead to excoriations and secondary bacterial infection
ENTEROBIUS VERMICULARIS
Mention the clinical aspect in the female ?
worms migration can cause urinary and genital tract
infection
General clinical aspect .?
Often the patient will complain of teeth grinding, and insomnia due to
disturbed sleep, or even abdominal pain or appendicitis
Egg recovery from?
In feces, less frequently (5%) , In urine of female patients
Explain the Cellulose tape ?
where a clear adhesive cellulose tape is applied to the anal area early in the morning before bathing or defecation. This is then observed under a microscope for the presence of pinworm eggs. These eggs may also be stained blue with lactophenol cotton blue, which aids in detection and identification. The sensitivity of this test when performed for three consecutive mornings is 90%
Other DIAGNOSIS
Anal or perianal swab
NIH swab ( should be repeated three times)
- Dirt from fingernails •
Adult worm recovery:
- On perianal region 2 to 3 hours after the infected person is asleep, the light- yellowish thread-like adult pinworms are clearly visually detectable
- On or under the stool surface
How we control the infection of pinworm
Treatment of the source of the infection (whole family)
Health education and personal hygiene
The hand should be washed with soap and warm water after using the toilet, changing diapers, and before handling food
The body should be washed well
The nails should be cut
The underwear should be changed everyday
The house should be cleaned well and have as much sunlight as possible
