Tuberculosis Flashcards
what causes TB?
Mycobacterium TB- aerosol droplets
how many people will develop dz?
most exposed will mount an immune response that is sufficient to prevent progression
but 10% will- “Primary TB”
what happens when a person can’t contain the primary infxn?
progresses to active TB w/in 2 yrs
“progressive primary TB”
what is a “latent TB infx”?
“LTBI”
those that contain the
bacterium w.o become infected-
they are not considered to be infx, nor can they spread the dz
where is inactive TB most commonly found in the body?
apices of the lung
what is “reactivation TB”?
develops from LTBI in the setting of immune compromise
what is the most common sx of TB>
cough
dry cough and progesses to a productive cough
+/- hemoptysis that last longer than 3 wks
what are other sx?
cough, pleuritis chest pain, fever, night sweats, anorexia, weight loss
**posttussive rales
how might the pt appear?
chronically ill and malnourished
Laboratory findings of primary TB
homogenous inflitrates, hilar/paratracheal lymph node enlargement, segmental atelectasis, cavitations w/ progressive dz
XR or reactivation TB
fibrocavitary apical dz, nodules, infiltrates, posterior and apical segments of the Right upper lob, apical-psterior segments of the left upper lob, superior segments of the lower lobs
healed primary infx show what on the xra?
ghon and ranke
ghon complexes
calcified primary focus
Ranke complexes
calcified primary focus and calcified hilar lymph nodes
PPD?
reported accourding to the diameter of INDURATION
