Chapter 6: Select Sporozoa: Plasmodium and Babesia Flashcards
What is the preferred anticoagulant for preparing blood smears for diagnosing malaria?
EDTA
What is the vector for Babesia?
Ticks
Which species of Plasmodium can have exoerythrocytic stages capable of causing relapses months or years after initial infection?
Plasmodium ovale
Which species of Plasmodium is characterized by the presence of Schuffner’s dots in the infected erythrocytes?
Plasmodium ovale
Which species of Plasmodium may readily be identified when crescent-shaped gametocytes are found in stained blood films?
Plasmodium falciparum
Which species of malaria parasite usually has ameboid trophozoites and produces small cytoplasmic ring with chromatin dots in the red blood cell cytoplasm?
Plasmodium vivax
In an examination of stained blood films, Babesia spp. are likely to resemble:
Plasmodium falciparum
A Giemsa-stained thick blood film showed many ring forms with no older stages, and a number of the rings had double chromatin dots. These findings are characteristic of:
Plasmodium falciparum
The infective stage of Plasmodium is (are) the:
Sporozoites
A periodic episode characterized by fever, chills, sweats, and fatigue
Paroxysm
Parasitic infection of the blood
Parasitism
The best time to collect blood for Plasmodium parasites is:
In between paroxysms
P. vivax characteristically invades:
Immature RBCs
Ziemann’s dots is morphologic feature of what Plasmodium parasite?
Plasmodium malariae
Schuffner’s dots is morphologic feature of what Plasmodium parasite?
Plasmodium vivax
