Cytauxzoon felis

Question 1

Cytauxzoon felis disease associated with

Answer 1

asexual replication in macrophages in spleen and hepatic tissues

Question 2

what is obstruction of blood flow and tissue ischemia associated with

Answer 2

engorged leukocytes adhere walls in lumen of veins in various organs

Question 3

schizonts develop into what?

Answer 3

merozoites

Question 4

what happens when schizonts develops into merozoites

Answer 4

rupture host cells and infect erythrocytes

Question 5

parasitemia is

Answer 5

detectable in stained blood smear

Question 6

late stage disease is associated with

Answer 6

eminent death

Question 7

what is the natural asymptomatic host for Cytauxzoon felis

Answer 7

bobcats

Question 8

how does a tick become infected with Cytauxzoon felis

Answer 8

nymphs feed on bobcats, allowed to molt, adult ticks feed on domestic cats

Question 9

what is the competent vector for Cytauxzoon felis trasmission

Answer 9

amblyomma americanum

Question 10

feline cytauzoonosis clinical presentation

Answer 10

infected cats often exhibit non specific signs of the disease (acute lethargy, depression, anorexia)
icteric w pale mucous membranes, dehydrated, polydipsic

Question 11

advanced cases may be

Answer 11

dyspenic w radiographic evidence of severe brochointerstitial pulmonary disease

Question 12

t/f pyrexia often coincident with parasitemia

Answer 12

true

Question 13

what are the signs of terminal disease for Cytauxzoon felis

Answer 13

hypothermia, vocalization immediately prior to death

Question 14

how to diagnose Cytauxzoon felis

Answer 14

hematology
clinical chemistry
parasites detected in host cells

Question 15

hematology

Answer 15

leukopenia w left shift and toxic change of neutrophils
normochromic, non-regenerative anemia

Question 16

what is the clinical chemistry of Cytauxzoon felis

Answer 16

hyperbilirubinemia, hyperglycemia
hypoalbuminemia, hypokalemia

Question 17

how to detect Cytauxzoon felis parasites in host cells

Answer 17

piroplasms in erythrocytes
schizonts in macrophages

Question 18

what factors can influence Cytauxzoon felis spread

Answer 18

global warming
bobcat populations spreading and increasing
relationship between ticks and bobcat reservoir

Question 19

factors facilitating spread of bobcat populations

Answer 19

home range necessary for breeding
excess mortality not common for adults
reproductively active through adulthood
prefer areas w rocky shallow soil, broken terrain
sustain healthy tick population

Question 20

t/f until recently Cytauxzoon felis was considered 100% fatal even with therapeutic intervention

Answer 20

true

Question 21

what is treatment sucess a function of

Answer 21

when in the disease process treatment is initiated

Question 22

what therapy is mor effective against Cytauxzoon felis schizonts than Imidiocarb

Answer 22

Atovaquone and Azithromycin

Question 23

when should treatment of Cytauxzoon felis be initated

Answer 23

any cat presenting with acute lethargy or other classical signs

Question 24

t/f blood samples should be submitted to confirm dx

Answer 24

true

Question 25

t/f prevention does not have more promise than a cure

Answer 25

false, it does

Question 26

how can owners prevent Cytauxzoon felis infection

Answer 26

keep cats indoors
observe for signs of acute disease march-october