USMLE K.O. USMLE Forums Logo USMLE Forums www.usmle-forums.com USMLE Forums Logo Electronic Residency
USMLE Forums
Your Reliable USMLE Online Community
2,005 Members :: 5,512 Posts
Home
USMLE Articles
USMLE News
USMLE Polls
USMLE Books
USMLE Mobile
Go Back   USMLE Forums > USMLE Step 1 Forum


USMLE Step 1 Forum USMLE Step 1 Discussion Forum: Let's talk about anything related to USMLE Step 1 exam

Reply
 
Thread Tools Search this Thread Display Modes
Old 12-20-2009
Sarah-cali's Avatar
USMLE Forums Scout
 
Steps History: Step 1 Only
Posts: 43
Threads: 13
Thanked 70 Times in 30 Posts
Reputation: 90
Question Right Lower Abdominal Pain

A 15 year old boy from Michigan developed severe right lower abdominal pain and fever.
Blood culture revealed this growth
Right Lower Abdominal Pain-ye.jpg

The causative agent illustrated has which of the following characteristics?
a- Goagulase positive
b- Produces heat stable enterotoxin
c- May also causes rectal prolapse
d- Can be grown on TCBS (Thiosulfate Citrate Bile salt Sucrose) medium
e- Is sexually transmitted
Reply With Quote
The Following 3 Users Say Thank You to Sarah-cali For This Useful Post:
memory (12-23-2009), smile135 (12-20-2009), wahaha007 (01-25-2010)



Old 12-20-2009
ahassan's Avatar
USMLE Forums Addict
 
Steps History: CS Only
Posts: 49
Threads: 0
Thanked 29 Times in 17 Posts
Reputation: 49
Default

I think the answer is B
Reply With Quote
Old 12-20-2009
USMLE Forums Scout
 
Steps History: Step 1 Only
Posts: 9
Threads: 2
Thanked 0 Times in 0 Posts
Reputation: 10
Default

I choose B also
Reply With Quote
Old 12-20-2009
Sarah-cali's Avatar
USMLE Forums Scout
 
Steps History: Step 1 Only
Posts: 43
Threads: 13
Thanked 70 Times in 30 Posts
Reputation: 90
Default

Yes correct,
this is yersinia enterocolitica which causes pseudoappendicitis clinical picture and it produces heat stabel enterotoxin.

choice A: yersinia pestis is coagulase positive but not enterocolitica
choice C: rectal prolapse is caused by whipworm
choice D: TCBS is for vibrio
choice E: It's not sexually transmitted but fecal-oral transmission
Reply With Quote
The Following 3 Users Say Thank You to Sarah-cali For This Useful Post:
DrSeddik (12-20-2009), memory (12-23-2009), wahaha007 (01-25-2010)



Reply

Tags
microbiology , step1qpool , surgery

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes


Similar Threads
Thread Thread Starter Forum Replies Last Post
An old man with abdominal pain DrSeddik USMLE Step 1 Forum 11 12-29-2009 08:36 AM
Acute Lower Limb weakness DrSeddik USMLE Step 1 Forum 3 12-04-2009 06:30 PM
Acute Lower Limb weakness DrSeddik USMLE Step 2 CK Forum 4 12-02-2009 04:22 PM
Lower Limb Spinal Dermatomes lee-usmle USMLE Step 1 Mnemonics 4 10-25-2009 03:12 PM
Old man with lower back pain rasheed USMLE Step 1 Classic Clues 0 08-22-2009 07:25 AM



USMLE Forums created under Creative Commons 3.0 License. (2009-2010)