DrVirgo
Forum Hero
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PPD Test:
What is considered positive in:
1. An immunocompetant person
2. A sick person with primary depression of their immune system
3. An immunocompromised person (e.g., organ transplant, HIV)
(how many mm induration?)
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| sunny2
Forum Elite
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1. >15mm
2. >10mm
3. >5mm
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| frank100
Forum Guru
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1. >15mm, plus no risk. if immunocompetent and risk (homeless, developing nations, IVDU, etc..), go for >10mm
2. this one counts as immunocompromised (but depends on histiry) so >5mm
3. >5mm (but a just transplanted can present with anergy, for obvious reasons)
*anergy=immunosuppression, malnutrition, old age, AND does not rule out TB.
hope it helps
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| sunny2
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frank100
I think person with immunocompromise is >10
if you say >5 you imply:
HIV +ve
close contacts of active TB
steroid use and organ transplant
with abnormal CXR with old ,healed TB
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| GDS2008
Forum Elite
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I would agree with frank100 here. I am not exactly sure what is meant by primary depression of the immune system (I would imagine immunodeficiency syndromes).In that case, I will be inclined to choose >5. However, please correct me if I am wrong. This is an important concept for the exam and we need to be clear on this. Thanks
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| juanma0
Forum Senior
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5mm in any defect of cell mediated immunity or other form of immunosppression. (Washington Manual 34th ed)
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| cbenitesch
Forum Senior
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Posts: 141
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1) >15
2) >5
3) >5
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