Term
| What is the intradermal bleb size? |
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Definition
|
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Term
| How long does it take from exposure to PPD+ conversion? |
|
Definition
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|
Term
| What is the rational for a two step test? |
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Definition
| REALLY old TB infection may not respond to the first TST however, a second test will usually elicit an appropriate positive response. |
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Term
| What is BCG? What type of false reading does it cause? |
|
Definition
| Neonatal vaccine, causes a false positive because of the vaccine. |
|
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Term
| How long until you can read the test? |
|
Definition
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Term
| What type of reaction does the PPD TST cause? |
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Definition
| A delayed T4 hypersensitivity reaction |
|
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Term
| What can cause a false positive reading? |
|
Definition
1. Non-tuberculine mycobac
2. BCG Vaccine |
|
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Term
| What can cause a false NEGATIVE reading? |
|
Definition
1. Anergy
2. Recent Tb infection
3. OVERWHELMING Tb infection
4. < 6mos old
5. Live Virus vaccine |
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|
Term
| How is the induration read? |
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Definition
| - Should have a hard edge and be read perpendicularly to the forarm long axis |
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Term
| What are the s/sx of Tb in order of appearance? |
|
Definition
1. Night sweats
2. Cough
3. Hemoptosis
4. Weight Loss |
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Term
| What is ordered if the person has positive s/sx? |
|
Definition
1. PPD
2. Chest XRay
3. Sputum Smear
4. HIV test |
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Term
| What if the PPD is POSITIVE and the chest xray is negative? |
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Definition
| Intent track, INH treatment recommended. |
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