Intestinal Nematodes: Enterobious Vermicularis

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Questions and Answers

What is the most common symptom associated with Ascaris lumbricoides infection?

Bloody diarrhea (correct)

Nausea and vomiting

Joint pain

Hypertension

Where do the larvae of Necator americanus migrate to in the human body?

Kidneys

Brain

Liver

Lungs (correct)

How can humans get infected with Ascaris lumbricoides?

Skin contact with contaminated water

Ingestion of eggs from infected soil or food (correct)

Through mosquito bites

Inhalation of airborne spores

What is a key preventive measure for avoiding Necator americanus infection?

Proper sanitation practices Signup and view all the answers

Which medication is commonly used to treat Ascaris lumbricoides infection?

Mebendazole Signup and view all the answers

What is a typical symptom of intense allergic itching due to hookworm penetration?

Ground itch Signup and view all the answers

What is the main mode of transmission of Hymenolepis nana?

Fecal-Oral Route Signup and view all the answers

What is a common symptom of Hymenolepis nana infection?

Gastrointestinal symptoms Signup and view all the answers

What is the definitive host for Hymenolepis nana?

Humans Signup and view all the answers

Which treatment is NOT mentioned for infections with Hymenolepis nana?

Albendazole Signup and view all the answers

What is the infective stage of Hymenolepis nana?

Embryonated eggs Signup and view all the answers

How can infections with Hymenolepis nana be prevented?

Avoiding raw veggie salad Signup and view all the answers

What is the diagnostic stage for Enterobius vermicularis infection?

Eggs in stool Signup and view all the answers

Which of the following is NOT a symptom of Enterobius vermicularis infection?

Severe anemia Signup and view all the answers

How is Trichuris trichiura mainly transmitted to humans?

Ingestion of eggs from infected soil or food Signup and view all the answers

Which of the following is a common preventive measure for Enterobius vermicularis infection?

Thorough cleaning and providing treatment to household members Signup and view all the answers

What is the definitive host for Trichuris trichiura?

Humans Signup and view all the answers

Which laboratory diagnosis method is used for detecting Trichuris trichiura infection?

Baermann technique Signup and view all the answers

Which larval stage is ingested by humans in Diphyllobothrium latum infection?

Plerocercoid larva Signup and view all the answers

What are the common symptoms associated with diphyllobothriasis?

Weight loss, digestive discomfort, and at risk of vitamin B12 deficiency Signup and view all the answers

How is Fasciolopsis buski commonly known?

Large intestinal fluke Signup and view all the answers

What is the infective stage of Fasciola hepatica in the definitive host?

Unembryonated eggs Signup and view all the answers

Which species causes Chinese or oriental liver fluke infection?

Clonorchis sinensis Signup and view all the answers

What is the main diagnostic stage used for identifying Fasciolopsis buski infections?

Unembryonated eggs in stool analysis Signup and view all the answers

Which parasite causes Katayama syndrome?

Schistosoma japonicum Signup and view all the answers

Where are the adult worms of Schistosoma haematobium found in humans?

Venules of the bladder and rectum Signup and view all the answers

What is the treatment for immature larval forms of Schistosoma japonicum?

Artemisinin derivatives Signup and view all the answers

What is the main symptom of chronic intestinal form caused by Schistosoma haematobium?

Abdominal pain Signup and view all the answers

Which stage of the parasite burrows into the capillary bed of feet, legs, or arms during skin penetration?

Cercariae Signup and view all the answers

What is the recommended control measure for preventing Schistosomiasis transmission?

Behavioral modification Signup and view all the answers

Study Notes

Ascaris lumbricoides

Most common symptom: Abdominal pain or discomfort.
Infection route: Humans become infected by ingesting eggs from contaminated soil or food.
Treatment: Commonly treated with medications like albendazole.

Necator americanus

Larvae migration: After skin penetration, they migrate to the lungs before traveling to the intestines.
Prevention: Key preventive measure is wearing shoes in areas prone to contamination.

Hymenolepis nana

Main transmission: Usually transmitted via ingestion of infected rodent feces or contaminated food.
Symptoms: Common symptoms include abdominal pain and diarrhea.
Definitive host: Humans serve as the definitive host.
Infective stage: The eggs are the infective stage and can be ingested.
Prevention: Avoiding contact with contaminated areas and practicing good hygiene.

Enterobius vermicularis

Diagnostic stage: Detection is typically through scotch tape analysis of eggs around the anal area.
Symptoms: Non-symptomatic cases are often reported, especially in children.
Prevention: Common preventive measures include handwashing and keeping nails short.

Trichuris trichiura

Transmission: Primarily transmitted through ingestion of eggs from soil or food contaminated with feces.
Definitive host: Humans are the definitive host.
Diagnosis method: Laboratory diagnosis is conducted via stool examination for eggs.

Diphyllobothrium latum

Larval stage: The plerocercoid larva is ingested by humans through undercooked or raw fish.
Symptoms: Common symptoms include weight loss, abdominal discomfort, and diarrhea.

Fasciolopsis buski and Fasciola hepatica

Common name for Fasciolopsis buski: Giant intestinal fluke.
Infective stage: The metacercaria is the infective stage for Fasciola hepatica in the definitive host.
Diagnostic stage: Eggs in feces are used for identifying Fasciolopsis buski infections.

Schistosoma spp.

Katayama syndrome: Caused by Schistosoma japonicum infection.
Adult worms location: Schistosoma haematobium adult worms are found in the urinary bladder.
Treatment: For immature larval forms of Schistosoma japonicum, praziquantel is commonly used.
Chronic symptoms: Chronic intestinal form caused by Schistosoma haematobium may lead to hematuria.
Skin penetration: The cercaria stage penetrates the skin and enters the capillary bed of feet, legs, or arms.
Control measures: Recommended control includes public health measures, education, and sanitation to prevent transmission.

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Description

Learn about Enterobious Vermicularis, commonly known as Pinworm, including its scientific name, common name, life cycle, symptoms, diagnosis, and treatment. Test your knowledge on laboratory diagnosis, symptoms, and prevention methods.