satheesh
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A 7-year-old girl was admitted with a 3-day history of increasing pain and swelling of her left leg. The patient recalled some trauma to her left leg. The patient was febrile (temperature of 39.2oC), left leg was red, swollen, warm and very tender. Bone scan and CT revealed subperiosteal abscess. Cultures of blood and abscess grew gram positive organisms. Which one of the following characteristics is consistent with this organisms?
A Able to grow in bile and in 6.5% salt
B Almost all strains produce coagulase
C Catalase negative cocci in clusters
D Resistance to nacomycimn is common
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satheesh
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| oddissy4u
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:arrow: D.
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| satheesh
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answer given as B
what is the most commom cause of sub periosteal abscess
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satheesh
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| peekay
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RESISTENT OT VANCO
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| satheesh
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the infection is staph. aureus. but vanco resistant is not common. i think b is correct
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satheesh
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| peekay
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THERE ARE TWO TYPES OF RESISRTENCES IN S. AUREUS. METHICILLIN AND VANCOMYCIN.,METHICILLIN IS MORE COMMON THAN VANCO.
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| satheesh
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A 65-year-old male presents with a 3 day history of cough productive of green sputum with right sided chest pain on deep inspiration. He also reports high fever, rigors and a 5 pound weight loss in the past month. On physical exam he is noted to have a temperature of 38.5°C, RR 26, BP 120/80, HR=100 regular, poor dentition, injected pharynx, 0.5cm non-tender lymph nodes in anterior cervical area and decreased breath sounds at the right base, dullness to percussion at right base and course bronchi and rales at the right lower lobe. Sputum examination reveals ,10 epithelial cells, >25 WBC/LPF with numerous gram negative bacilli. Lab revealed a WBC of 13,400 with 60 segs, 14% bands, 30% lymphs and a serum Cr of 1.8. CXR shows a right lower lobe infiltrate with blunted costrophrenic angle. Based on the clinical presentation and the Gram stain the most likely diagnosis is:
A Klebsiella pneumoniae
B Mycobacterium tuberculosis
C Mycoplasma pneumoniae
D Pneumocystis carinii
E Staphylococcus aureus
F Streptococcus pneumoniae
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satheesh
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| oddissy4u
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:roll: :roll: gives a picture of strep pyogenes but gram neg so staph n strep r out ,
now green sputum/gram negative-/toxic /effusion----- :roll: cant think of klebsiella being so toxic , mycoplasma just portraits to be severe , is it Myco Tb?
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| asmi
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sateesh are you sure about gram negative..?
If yes, then kleb pneumoniae
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| dr.shar
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it appears that same q with gram positive sputum
then it is strep pnuemonia
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| mdwannabe
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I d go for Klubb .. though not "classical" red currant jelly, but rather toxic, + abscess, + G-
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| nudoc
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most likely klebsiella which yields a productive cough(green sputum) and is gram neg.Gram neg rules out B D E F,mycoplasma pneumoniae is more common in upper resp.tract and in young adults in crowded settings eg college dorms and the cough is non productive
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TM
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