Tuberculosis Flashcards

1
Q

What are the different types of Tuberculosis

A

Multi-drug resistant TB (MDR-TB)
extensively drug resistant TB (XDR-TB).

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2
Q

TB is Transmitted Via

A

when a contagious patient coughs, spreading bacilli through the air

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3
Q

TB Incubation Period

A

3-12 weeks (TST/PPD); Transition from latent to active can be 10-60 years.

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4
Q

TB is reportable?

A

YES

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5
Q

What is the leading infectious cause of death worldwide

A

TB

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6
Q

High-endemic areas, primary infection occurs usually in what age group?

A

Children

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7
Q

What issue?
Characterized by local granulomatous inflammation in
periphery of the lung (GHON focus) may be accompanied by
ipsilateral lymph node involvement (GHON complex).
-Infection is usually asymptomatic but can present as an acute
lower respiratory tract infection.

A

TB Primary infection

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8
Q

_______________ is a vaccine against tuberculosis (TB)
-Routinely given to children in countries with a high prevalence of TB to prevent childhood TB.

A

Bacille Calmette-Guerin (BCG)

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9
Q

Why isn’t BCG used in the US

A

Low risk of TB infection

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10
Q

True/False
Prior BCG vaccination may cause a false positive reaction to a TB skin test.

A

True

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11
Q

True/False
IT is easy to determine if a positive TST/PPD result is secondary to the BCG vaccine or due to latent TB infection

A

False
Difficult to determine

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12
Q

What are the preferred method of TB testing for people who have received the BCG vaccine?

A

TB blood tests
-QuantiFERON
-T–Spot

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13
Q

What instruction says this?
TST results in persons vaccinated with BCG immunization will be interpreted and treated using the same criteria for those not BCG vaccinated

A

BUMEDINST 6224.8C

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14
Q

___________ is defined as a positive result on the following labs:
a) Tuberculin skin test (TST)
(b) Purified protein derivative (PPD)
(c) Positive QuantiFERON Gold blood test
(d) Positive IGRA-TB blood test

A

Latent Tuberculosis Infection (LTBI)

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15
Q

What is the definition of LTBI?

A

Patient is infected with M. tuberculosis but does not have active TB disease.

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16
Q

Labs & Rads Status for LTBI:

A

(1) Positive TST/PPD or blood test
(2) Normal CXR
(3) Negative acid-fast sputum test
(4) Has Mtb bacteria in their body (typically the lungs) that are alive, but inactive.
(5) Remains asymptomatic
(6) Is non-infectious

17
Q

What is the instruction for TB

A

BUMEDINST 6224.8C