USMLE Forum Archives - USMLE Step 3 - int med
int med
bingousmle - 07-26-10 07:11
A 38-year-old woman with frequent hospital admissions related to alcoholism comes to the emergency room after being bitten by a dog. There are open wounds on her arms and right hand that are purulent and have necrotic borders. She is hypotensive and is admitted to the intensive care unit. She is found to have disseminated intravascular coagulation and soon develops multiorgan failure. Which of the following is the most likely organism to have caused her rapid decline?
A. Aeromonas spp.
B. Capnocytophaga spp.
C. Eikenella spp.
D. Haemophilus spp.
E. Staphylococcus spp.
bingousmle - 07-26-10 07:11
A 38-year-old woman with frequent hospital admissions related to alcoholism comes to the emergency room after being bitten by a dog. There are open wounds on her arms and right hand that are purulent and have necrotic borders. She is hypotensive and is admitted to the intensive care unit. She is found to have disseminated intravascular coagulation and soon develops multiorgan failure. Which of the following is the most likely organism to have caused her rapid decline?
A. Aeromonas spp.
B. Capnocytophaga spp.
C. Eikenella spp.
D. Haemophilus spp.
E. Staphylococcus spp.
The correct answer and explanation will be available after you answer.
Page 1
#4
Re: int med
bingousmle - 07-27-10 01:20 My answer is: b.
as staph does not fit in the picture and Eikenella and Haemophilus are part of human mouth flora and not that of the dog.. so B
#5
Re: int med babbu5508 - 07-27-10 03:13 My answer is: b.
chose by exclusion and remember it to be a consituent of the mouthe flora of animals like dogs etc...but not sure if pathogenic..
#9
Re: int med babbu5508 - 08-31-10 00:01 Capnocytophaga canimorsus is a Gram-negative bacillus (rod-shaped) bacterium that causes a zoonotic disease, most commonly in asplenic patients. It is a member of the normal gingival flora of dogs and cats. It causes fulminant sepsis with disseminated intravascular coagulation (DIC)
Page 1