25. Resp. and Hematopoietic System

Question 1

A 18 y/o drug user has been recently kicked out of his house by his parents. For the last few months he has been finding refuge in various barns and abandon farm houses in California. He was found in a barn by a farmer with a fever of 102F, chills and buboes. Which of the following could be the cause of the buboes on his skin?

A. Pla protease 
B. Murine toxin
C. V antigen
D. F1 envelope antigen
E. LPS antigen 

SZ

Answer 1

Ans. D. F1 envelope antigen

The man has Y. pestis or bubonic plague

A. Pla protease and B. murine toxin are responsible for injection into the host
C. V antigen are for phagocytosis and spread to the lymph
D. LPS antigen is for Klebsiella

Question 2

A 5 y/o boy develops fever, chills, malaise, HA, diffuse joint pain. He is found to have bacillary peliosis on his liver and spleen. Which of the following could be cause of his condition?

A. Receiving a new kitten
B. Traveling to visit family in Peru
C. Camping in a dusty desert
D. Contact with fruit bats
C. Xenopsylla cheopis

SZ

Answer 2

Ans. Receiving a new kitten

The boy has cat scratch fever. B. henselae. Bacillary peliosis is specific to B. hensalae.

Peru = B. bacilliformis
Camping/Lice = B. quintana
Fruit bat = ebola
Xenopsylla cheopis (flea) = Yersinia

Question 3

An archaeologist goes on a 5 week expedition of Inca ruins in Peru. 3 weeks in to the trip he begins to complain of muscle aches and abdominal pain. After the expedition he returns home and a month later begins to have multiple nodular hemangiomas appear on his skin. What likely transmitted this mans disease?

A.  Lutzomyia spp. 
B. Pediculus humanus 
C. Fruit Bats
D. Xenopsylla cheopis
E.  Feline contact 

RFA

Answer 3

Ans. A Lutzomyia spp.- is the Sandfly the patients travel history-Peru and symptoms (abdominal pain followed by nodular hemangiomas) points to B. bacilliformis( Carrion disease)

B. Pediculus humanus- is the body louse would carry quintana( Trench fever)

C. Ebola

D. Xenopsylla- is a flea this would be the plague

E. B. henselae

Question 4

A 8 year old boy who lives in the slums of brazils is brought to a free clinic with complaints of fever head and eye pain. The boy also has multiple cranberry like lesion on his skin. What is this infection associated with.

A. Femoral lymph node enlargement 
B. ARDS 
C.Hemorrhage of mucous membranes 
D. Endocarditis 
E. Hemorrhagic fever

RFA

Answer 4

Ans. D. The patient has B quintana infection( Trench fever) caused by Body louse
+ symptoms= eye pain, fever headache, history of poverty

A. Plague

B. Plague

C. Ebola

E. Ebola

Question 5

A homeless man is examined by a homeless shelter physician and complains of severe pain in his shins and back, headache, retro-orbital pain, and restlessness. Temp 103F. This causal disease may complicate to culture negative endocarditis and bacteremia. What organism transmitted the disease to the patient? (MG)

A. Deer mouse
B. Anopheles mosquito
C. Body louse
D. Lone star tick

Answer 5

C. Body louse

dx: B quintana/Trench fever/quintan fever

body louse = pediculus humanus corporis

common among homeless people

Question 6

A 30 year old male living in Liberia presents with large hemorrhagic macules over his entire body. He also has venipuncture seites and is vomiting blood and coughing up blood. His grandfather recently passed away with similar symptoms, and the body was being stored in their home for a week as is customary. What type of virus is at fault here? (MG)

A. Parvovirus
B. Poxvirus
C. Retrovirus
D. Filovirus

Answer 6

D. Filovirus

It’s Ebola