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usmle q 22?
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Author7 Posts
  #1

1 day old infant, possible sepsis, blood culture: gram + cocci in pairs, chains agglutinate with group B antiserum

bacterial most likely colonization in mother's vagina

can anyone explain it to me? thanks

  #2

What do you particularly want to know?

Group B Streptococcus(gram positive coccus)is the most common cause of septicemia and meningitis in neonates.It colonizes vagina of 15-20% fo women and can infect the infant during labor or during delivary(increased risk when there is prolonged rupture of membranes).


  #3

nod Group B Strep - Strep Agalactiae (beta-hemolytic, catalase negative, bacitracin resistant) colonizes vagina. At week 36-37 gestation, pregnant mother is screened for this.


  #4

Anything and everything(broadlyspeaking) to do with neonates/infants......S.agalactiae

  #5

and the pregnant mother to be needs to get ABs for safety of her baby...

  #6

Group B septicemia in a neonate is a tragic occurrence that can be almost eliminated by proper prenatal care and Group B screening at the proper time. Our lab now performs PCR testing on Vaginal/Rectal swabs for Group B instead of plating, and positives are called and faxed to the ordering physician. We also perform the molecular testing STAT on L&D OB's who have not been screened.

We had a case of Group B meningitis fairly recently - unfortunately the baby died. This was a needless tragedy.



___________________
Clinical Microbiology since 1974

  #7

wonderful, this is the best response i have ever got so far, i can totally remember it now







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