Tuberculosis Flashcards
What are the different types of Tuberculosis
Multi-drug resistant TB (MDR-TB)
extensively drug resistant TB (XDR-TB).
TB is Transmitted Via
when a contagious patient coughs, spreading bacilli through the air
TB Incubation Period
3-12 weeks (TST/PPD); Transition from latent to active can be 10-60 years.
TB is reportable?
YES
What is the leading infectious cause of death worldwide
TB
High-endemic areas, primary infection occurs usually in what age group?
Children
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.
TB Primary infection
_______________ is a vaccine against tuberculosis (TB)
-Routinely given to children in countries with a high prevalence of TB to prevent childhood TB.
Bacille Calmette-Guerin (BCG)
Why isn’t BCG used in the US
Low risk of TB infection
True/False
Prior BCG vaccination may cause a false positive reaction to a TB skin test.
True
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
False
Difficult to determine
What are the preferred method of TB testing for people who have received the BCG vaccine?
TB blood tests
-QuantiFERON
-T–Spot
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
BUMEDINST 6224.8C
___________ 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
Latent Tuberculosis Infection (LTBI)
What is the definition of LTBI?
Patient is infected with M. tuberculosis but does not have active TB disease.
