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Osteomyelitis

Discussion in 'Step I' started by monet, Apr 27, 2004.

  1. monet

    monet Senior Member
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    I have a question about Osteomyelitis....
    Staph aureus occurs in children and IV drug users.
    Pseudomonas may be caused by wounds piercing through the shoe.

    but Kaplan's notes say Pseudomonas is the cause of IV drug users and diabetics.

    What is correct? :confused:
     
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  3. GiJoe

    GiJoe Senior Member
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    all 3 from what I understand. for diabetics, it might be multiple organisms including pseudomonas
     
  4. mountaindew2006

    mountaindew2006 Senior Member
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    hey there....actually my prof actually stated that pseudomonas osteomyelitis occurs in immuno comped pts, DM pts, and IV drug users, hence agreeing with kaplan i suppose..


    I believe in IVDU staph aureus is what causes acute infective endocarditis, not osteomyelitis.


    yah i just confirmed with boards and wards by ayala and it stated what i just wrote as well

    later
     
  5. DarksideAllstar

    DarksideAllstar you can pay me in bud
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    S.aureus is the most common cause, while in sicklers salmonella is (due to asplenia, I presume).
     
  6. Idiopathic

    Idiopathic Newly Minted
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    Salmonella definitely MC in sicklers, and Staph MC otherwise. Staph also causes infective endocarditis in IVDU.
     
  7. Kalel

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    Both pseudomonas and staph osteomyelitis are common and can occur with any skin puncture/needle wound.
     
  8. GiJoe

    GiJoe Senior Member
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    what causes infective endocarditis in diabetics/immunocompromised? are they a special case like in osteomyelitis? ( i had a question like this on the comprehensive nbme i took today)
     
  9. Kalel

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    The answer was probably staph aureus. Diabetics and immunocompromised patients usually only get endocarditis when they are hospitalized and have lines placed in them. Anatomical valvular abnormalities is actually a more signficant risk factor for developing endocarditis then immunocompromisation is though.
     
  10. DarksideAllstar

    DarksideAllstar you can pay me in bud
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    Out of curiosity, could candiasis be a cause of endocarditis in diabetics? I know that they are susceptible to mucormycoses, so I guess it might be reasonable that they could develop a systemic mycosis and subsequent endocarditis. I read some where that it can cause it in IVD users. Anyone have any practical knowledge regarding this (not just book learnin'!)
     
  11. Solace

    Solace Member
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    While studying for the USMLE, I wouldn't even want to be thrown off by the practical knowledge. I will get to that once this is out of the way. The correct letter to click on is the taeget...

    S. Aureus is the most common for acute endocarditis and C. Albicans tends to infect prostethic valves and is the most common cause of infective endocarditis, according to my Cardio prof in a lecture I viewed last week. It is consistent with the books I am using to study.
     
  12. Solace

    Solace Member
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    While studying for the USMLE, I wouldn't even want to be thrown off by the practical knowledge. I will get to that once this is out of the way. The correct letter to click on is the taeget...

    S. Aureus is the most common for acute endocarditis and C. Albicans tends to infect prostethic valves and is the most common cause of infective endocarditis, according to my Cardio prof, a cardiologist, in a lecture I viewed last week.
     
  13. BamaFlip

    BamaFlip Member
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    "but Kaplan's notes say Pseudomonas is the cause of IV drug users and diabetics"

    Just FYI. Pseudomonas commonly exists in tap water and tap water is a common medium by which IV drug users use to dilute. Perhaps they should use Evian, Dasani, etc... :)
     
  14. Gauss

    Gauss Damnit Jim!
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    AS far as I know,
    S Aureus is the most common cause for EVERYONE
    In Sicklers salmonella is your next best bet
    Pseudomonas in puncture wounds through shoes and for similar foot reasons in diabetics
    Pseudomonas is also common in IV drug users because they use poor sanitary conditions to clean their needles, i.e. clean their needles in puddles where pseudomonas is rampant.

    Pseudomonas and serratia endocarditis are seen in IV users.
    I have never seen fungal endocarditis, but apparently occurs post open heart surgery

    Common board questions: viridans group streptococcal infection is more common after dental procedures, group D enterococci are seen more often after lower bowel or genitourinary manipulation.
     
  15. Idiopathic

    Idiopathic Newly Minted
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    For sicklers (this has been confirmed) salmonella is more common than staph for osteomyelitis...for everyone else it is Staph.
     
  16. Harrie

    Harrie Senior Member
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    I've read both, but...

    in real life Staph aureus is most common cause of osteomyelitis for everyone, but Salmonella is also common for sicklers.

    in a Step I question, probably any sickler with osteo will have Salmonella. Gotta love those buzzwords.
     
  17. Homunculus

    Homunculus SDN Caveman Administrator
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    this is the approach i would take.
     
  18. Homunculus

    Homunculus SDN Caveman Administrator
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    confirmed by whom?
     

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