Results 1 to 4 of 4

Thread: Microbio case -gram negative rods

  1. #1 Microbio case -gram negative rods 
    New Member
    Join Date
    Dec 2013
    Hello guys,
    Im new here and i need ur help I have to present a presentation in microbio on monday. We got this case and we had to find out which disease it is.
    The topic is gram negative rods in enteric tract.

    Case # 3.
    Mr. D., a 33-year-old fully immunized, rather nervous accountant who is blood group O positive and taking H2 blockers for ulcer disease, his 29-year-old healthy wife and their 10-month-old baby boy returned from a 2-week trip to South America. The next morning Mr. D. passed a semisolid stool, which was quickly followed by a large watery bowel movement. Within an hour he passed another large watery stool, now opaque gray–white in color. He vomited several times and became slightly sweaty. After passing another large watery stool, Mr. D. called his physician, who advised him to go to the emergency department. When he arrived there Mr. D. was afebrile but had a rapid heart rate with a feeble pulse and low blood pressure. He complained of muscle cramps and dizziness. All these signs and symptoms were consistent with a significant loss of extracellular fluids. Laboratory studies showed a normal
    leukocyte count, a slightly elevated level of serum sodium, a normal serum potassium level, and an elevated blood urea nitrogen level, also consistent with dehydration. A diagnosis of cholera was suspected. Mr. D. was immediately given 2 liters of fluid intravenously and then started on oral rehydration solution. His stool volumes progressively diminished over 48 hours, and he was discharged. Mrs. D., a native Peruvian, had two loose bowel movements on the second day of her husband's illness. Her stool culture grew only Escherichia coli.

    1. Classify the pathogenic E. coli and representative serotypes. What are
    the symptoms of diseases they may develop? What is the epidemiology?

    2. What is the most likely organism causing Mr. D’s disease?

    3. Are all enteric bacteria capable of causing disease, or are some more frequently pathogenic than others? Which enteric pathogens cause diarrhea and where do they come from?

    4. What are the clinical manifestations caused by the diagnosed pathogen?

    5. Why did Mrs. D. not show the same symptoms?

    6. What factors are involved in colonization? What factors are involved in causing symptoms?

    7. What is the proper therapy for this disease?

    So this is the whole case. I`m unsure between cholera cause by vibrio cholera or travelers diarrhea cause by enterotoxigenic E.coli. The first question is confusing me -.-

    hope u have any ideas
    thank you in advance

    Reply With Quote  


  3. #2  
    bio is offline
    Join Date
    Nov 2013

    Reply With Quote  

  4. #3  
    Forum Masters Degree mat5592's Avatar
    Join Date
    Mar 2013
    West Virginia
    I would never feel comfortable giving a diagnosis based on some vague symptoms and limited laboratory testing. If we're wanting to identify an organism, why are there more chemistry and hematology results than microbiology? We have a culture, yet no description of appearance on agar, atmospheric conditions, and hemolysis? Why no rapid biochemical testing like a simple indole or oxidase test?
    Reply With Quote  

  5. #4  
    bio is offline
    Join Date
    Nov 2013
    exactly what the above poster said. also what kind of ecoli is it?
    Reply With Quote  

Similar Threads

  1. Replies: 2
    Last Post: July 27th, 2012, 07:19 AM
  2. Negative Magnetic Polorization To Increase Negative Polorized Projectile Velocity
    By bryan in forum Personal Theories & Alternative Ideas
    Replies: 11
    Last Post: January 10th, 2012, 03:17 AM
  3. Spent fuel rods
    By Jaropium in forum Physics
    Replies: 7
    Last Post: March 22nd, 2011, 06:13 PM
  4. Waiting for test results for first microbio exam...
    By gottspieler in forum General Discussion
    Replies: 5
    Last Post: March 1st, 2010, 05:15 PM
  5. Electric cars, the hot rods of the future
    By (In)Sanity in forum Mechanical, Structural and Chemical Engineering
    Replies: 35
    Last Post: August 4th, 2006, 09:16 PM
Tags for this Thread

View Tag Cloud

Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts