Iris Flashcards

1
Q

What is Iris

A

Extreme immune response against Dead Or live mtb

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2
Q

What are the risk factors for Iris

A
Shorter interval between ATT and arv
 CD for less than 50 
higher baseline viral load greater increase in cd4
disseminated Tb
young male
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3
Q

What is the pathogenesis of iris

A

Increase antigen in disseminated kochs plus risk factors shift the th2 response to th1 response release of inflammatory cytokines causing Iris

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4
Q

What are the symptoms of iris

A

Paradoxical deterioration of Tb symptoms and radiological finding after initial improvement
it is a diagnosis of exclusion

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5
Q

What are the types of iris

A

Unmasking
paradoxical
cryptic
autoimmune

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6
Q

What is Un masking

A

ASymptomatic in the beginning , later unmasks the inflammation

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7
Q

What is paradoxical Iris

A

It is the most common type aggravation of the existing inflammation

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8
Q

What is cryptic iris

A

Radiological worsening is there but there are no symptoms

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9
Q

What is the kind of iris scene in HIV

A

Both paradoxical and un masking form
there is major pulmonary involvement TB
Meningitis in 5 to 10 months abdominal TB

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