TB Flashcards Preview

Medicine > TB > Flashcards

Flashcards in TB Deck (26):
1

what is the MCC of young person pneumonia that lives in close quarters?

mycoplasma

2

what does a fatty embolus cause in the lungs?

diffuse pulmonary infiltrates

3

what can prevent pneumonia post op?

incentive spirometry

4

what is MCC of pneumonia in HIV pts?

PCP

5

which obstructive lung dz has predominantly neutrophil driven inflammation?

COPD

6

80% of chronic cough is caused by what three etiologies

GERD

7

what is the MCC of CAP?

strep pneumo

8

what two blood tests are helpful in treating asthma?

RAST panal
IgE

9

where are tb bugs kept in remission?

alveolar macrophages

10

when will TB become an active infection?

bug escapes from alveolar macrophage

11

when does TB dissemination occur?

before an active immune response

12

where are common areas that TB can affect?

brain, larynx, lymph node, lung, spine, bone, kidney

13

what helps evaluate likelihood of infection of TB?

infectiousness of person with TB
environmental factors that increase infectivity
proximity, frequency, duration of exposure

14

how long after infection will LTBI be detected on TST or interferon gamma assay (IGRA)?

2-8 weeks

15

do ppl with LTBI spread infection?

no

16

in how many ppl with LTBI become active TB?

10%
(half occur within 2 years of initial infection)

17

what confirms TB infection?

positive TB culture (most often obtained by bronchoscopy)

18

what percentage of HIV ppl will get active TB after being exposed to it?

50%

19

who else is at risk for getting TB?

silicosis (interstitial lung dz)
DM
steroid use
gastrectomy
children <5yrs

20

what are clinical features of TB

fever, chills, nightsweats, anorexia, wt loss, fatigue, chronic productive cough, CP, +/- hemoptysis, blood-streaking MC (frank blood is rare)

21

what are extrapulmonary features of TB if it has gone to other organ systems?

blood in urine
h/a, confusion
back pain
hoarseness

22

what is PE of TB lungs?

post tussive apical rales, but often is normal

23

in which pt would a 5mm PPD be a positive?

HIV
recent TB contacts
Fibrotic changes on CXR (indicating prior TB)
PING

24

in which pt would a 10 mm PPD be a positive?

recent immigration
injection drug user
medical workers/mycobateria lab workers
children <5yo

25

in which pt would a 15 mm PPD be a positive?

no known TB risk (general population)

26

what are the 3 most common non TB infections?

M avium, M chelonae, M absessus
difficult to treat
3-5 drug regimen for 18 months

Decks in Medicine Class (146):