ASCP Parasitology Exam (Answered) With Complete Verified Solution 2023/2024

ASCP Parasitology Exam (Answered) With Complete Verified Solution 2023/2024 What is the diagnostic procedure for Echinococcus granulosus? The microscopic examination of hydatid fluid aspirated from a cyst. What is the diagnostic procedure for Onchocerca volvulus? Examination of skin snips. What is the diagnostic procedure for Schistosoma haematobium? Examination of urine sediment. Charcot-Leyden crystals in stool may be associated with an immune response and are thought to be formed from the breakdown products of what cell? Eosinophils. How is Trypanosoma brucei rhodesiense transmitted? By the bite of the tsetse fly. Infection with Giardia lamblia is often associated with: Ingestion of water contaminated with cysts. Upon examination of stool material for Cystoisospora belli, one would expect to see: Oocysts that are modified acid fast variable. What is the best technique to identify Dientamoeba fragilis in stool? Trichromatic stained smear. Because there is no known cyst form for Dientamoeba fragilis. Entamoeba gingivalis Known to be an inhabitant of the mouth and is characterized by morphology that resembles Entamoeba histolytica/E.dispar. However, Entamoeba gingivalis tends to ingest P.M.N's whereas Entamoeba histolytica/E.dispar does not. What organism causes primary amoebic meningoencephalitis? Naegleria fowleri. What are the characteristics of the rhabditiform-noninfective-larvae of Strongyloides stercoralis? Short buccal capsule and large genital primordium. Visceral larva migrants is associated with what parasitic organism? Toxocara. Toxocara species are the cause of visceral larva migrants and occur when humans accidentally ingest the infective eggs of the dog or cat ascarid. The larvae migrate through the deep tissues, including the eye. What are visceral larva migrans? A condition in humans caused by the migratory larvae of certain nematodes, humans being a dead end host. These nematodes can infect but not mature in humans and after migrating through the intestinal wall, travel with the blood stream to various organs where they cause inflammation and damage. Balantidium coli. Not common in the United States. It can cause watery diarrhea in humans and is associated with pigs. It is the largest of the intestinal Protozoa. What method is used to diagnosis Toxoplasmosis? Serology. Examination of 24 hour unpreserved urine specimen is sometimes helpful in the recovery of what parasitic organism? Schistosoma haematobium eggs. S.haematobium blood flukes reside in the veins over the bladder. When eggs are passed from the body they are found in the urine. Eating poorly cooked pork can lead to an infection with what parasitic organism? Taenia solium and Trichinella spiralis. What is the common name for Strongyloides stercoralis? Threadworm. The examination of sputum man be necessary to diagnosis an infection with what parasitic organism? Paragonimus westermani. The adult worms are found in the Lung and and the eggs may be coughed up in sputum. Stool can also be used if the sputum is coughed up and then swallowed. What is Taenia saginata associated with? Beef Where do the adult tapeworms of Echinococcus granulococcus usually live? In the intestines of dogs. Generally, how is Diphyllobothrium latum acquired? By ingestion of freshwater fish. In infections with Taenia solium, humans can serve as: Either the definitive or intermediate host. If humans ingest Taenia sodium cysticerci in uncooked or rare pork, the adult tape worm will mature within the intestines - this makes humans the definitive host. If eggs from the adult tapeworm are ingested, then the cysticerci will develop in human tissue - this makes humans the accidental intermediate host. What is known as the liver fluke? Clonorchis sinensis. What is know as the flea tapeworm or the cucumber tapeworm? Dipylidium caninum. Babesia is an intracellar parasite that resembles what parasitic organism? Plasmodium falciparum rings. Can Ascaris lumbricoides be transmitted in the laboratory under normal conditions? No, Ascaris lumbricoides requires a period of development in the soil before infective to humans. What is Toxoplasma gondii characterized by? Possible congenital infection and ingestion of oocysts. Cosmopolitan distribution. Difficulties in interpretation of serological results. Can Ascaris lumbricoides be transmitted in the laboratory under normal conditions? Examination of in skin snips. The microfilariae of Onchocera volvulus are normally found in the fluid right under the outer layer of the skin. Oocysts of Cryptosporidum species can be detected in stool specimens using Modified Ziehl-Nielsen acid fast stain. Massive hemolysis, blackwater fever and central nervous system involvement are most common with what parasitic organism? Plasmodium falciparum. What is Enterobiasis caused by? By Enterobius vermicularis. The pinworm. The formalin ether -ethyl acetate- concentration procedure for feces is used to demonstrate: Protozoan cysts and helminth eggs. The miracidial hatching test helps to demonstrate the viability of eggs of what parasitic organism? Schistosoma species. Cysts of Iodaoeba butschilii typically have what? A large glycogen vacuole. Organisms that should be considered in a waterborne outbreak of diarrheal disease include: Giardia lamblia and Cryptosporidium species. Primary infections with the microsporangia may originate in: The gastrointestinal tract. Eye infections with Acanthamoeba species most commonly been trace to: Use of contaminated lens care solution. What is the most sensitive recovery method for Acanthamoeba species from lens care solutions or biopsies? The use of non-nutrient agar cultures seeded with E.coli. The amoebae feed on the bacteria; both trophozoites and cysts can be recovered from the agar surface. Microsporidia are protozoans that are now classified as what? Fungi. What is Knott's concentration used for? It is designed to allow the recovery of microfilariae from a blood specimen. What is a characteristic of Hymenolepis nana? It has a thin eggshell containing a six hooked embryo-oncophere-and polar filaments that lie between the eggshell and embryo. Wuchereria bancrofti Sheathed microfilriae, a roundworm, that infects the lymphatic system. It is only one of three species that infects the lymphatic system. What is Baermann's concentration used for? The recovery of Strongyloides. How is the diagnosis of Protozoa confirmed? With a permanent stained fecal smear.