Species comparison of Plasmodium spp

Question 1

asexual cycle of plasmodiu spp

Answer 1

P. falciparum, P. vivax, P. ovale - 48 hours

P. malariae - 72 hours

Question 2

periodicity of fever of plasmodium spp

Answer 2

48 hours - falciparum, vivax, ovale (tertian fever)
every 72 hours - malariae (quartan fever)

falciparum - only malignant tertian

Question 3

RBC preference of P. falciparum

Answer 3

all ages

Question 4

RBC preference of P. vivax

Answer 4

young RBCs

Question 5

RBC preference of P. malariae

Answer 5

old RBCs

Question 6

RBC preference of P. ovale

Answer 6

young RBCs

Question 7

lowest parasitemia

Answer 7

P. malariae

Question 8

highest parasitism

Answer 8

P. falciparum

Question 9

low parasitism

Answer 9

P. vivax and P. ovale

Question 10

banana shaped gametocytes

Answer 10

P. falciparum

Question 11

large round gametocytes

Answer 11

P. vivax

Question 12

compact gametocytes

Answer 12

P. malariae

Question 13

small round gametocytes

Answer 13

P. ovale

Question 14

can present as cerebral malaria

Answer 14

P. falciparum

Question 15

tendency to recrudescence

Answer 15

P. falciparum

P. malariae

Question 16

tendency to relapse

Answer 16

P. ovale, P. vivax

Question 17

which spp ahs many drug resistance

Answer 17

P. falciparum

Question 18

recurrence of symptoms after a temporary abatement (2-4 weeks )

Answer 18

Recrudescence

Question 19

return of disease after its apparent cessation (1-6 months )

Answer 19

Relapse

Question 20

0 merozoites

Answer 20

P. falciparum

Question 21

12-24 merozoites

Answer 21

P. vivax

Question 22

6-12 merozoites

Answer 22

P. malariae

Question 23

8 merozoites

Answer 23

P. ovale

Question 24

role of thick smears with Giemsa stain

Answer 24

screen for presence of organisms

Question 25

role of thin smears for giemsa stain

Answer 25

species identification