TB Flashcards

(47 cards)

1
Q

Which social economic group are most at risk of tb

A

those who are most deprived

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2
Q

what is the realationshoip of tb incidena snd undernurismetn

A

increase in undernurishment increase in tb

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3
Q

where are most tb cases from

A

abroad and certain burrows of london
china, bangledishe, nigheria, congo, nigheria, pakastian, philipies, indoinnaea

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4
Q

which health conditionw make you morke likely to have tb

A

diabties, hiv positive, immunosupprested

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5
Q

what is the second most common signle infective agent to cause death world wide

A

tb, covid first

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6
Q

what bacteria is responsible for tb

A

mycobacteria - this includes, m. tuberculosis, m africanum, m bovis

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7
Q

what other diease can mycobactira cause

A

leprosy and non tb mycobactira and atuypial mycoabction

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8
Q

is mycobactira aeorbic or anerobic

A

aerobic

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9
Q

what special function does the cel wal have of mycobacteria

A

very thick so it is resibant to ascids, alkalas and degenr,s resitnat to nejupoils and macrophage desticuion

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10
Q

how does tb spread

A

airborned

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11
Q

how to reduced airborne bactreia

A

uv radioan

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12
Q

how long do you need to typically be exposed to airborne tb to catch it

A

8 hours

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13
Q

what tyep of effector caells react to tb

A

TH1 immune cells

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14
Q

what does the th1 immune cell do

A

triggers mracophage activaation

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15
Q

what happens aftr the marcophage is formed

A

it turns into a eptheoild cell which is a granuloma

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16
Q

what do the epithlod cells turn into

A

langhans giant cells

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17
Q

what are the probemsl with th1 cell mediated respone

A

it causes tissue destcuciont

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18
Q

how does tb spread

A

vis lympathic to hilary lympodes

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19
Q

can you tell if the idseas is contiaed or cleared

20
Q

what happens to the primary inection in tb

A

it can progress to tb bronchopneumia

21
Q

what is tuberculosi bronchipnumoa

A

where priary tb proges to it

22
Q

what are the results of tb bronchopnmhisp

A

caviatyion, enlarged hilary lymph compres bronchi - leading to lobar collapse
enlaryed lymph nose dischaes into bronchus

23
Q

what is miliary tb look like

A

a millet seed on an autopys this deglps and spreads to multiple organs

24
Q

what is the restl of miliary tb

A

can spread to cns in 10- 30% of cases
see fine mlolin on x-ray

25
whgat is the post primary diseas stage of tb
tb enerer doramatn latent stage, or balace of replicant and destiucion by immune cells
26
how long does milary tb take to develop
5- 12 months
27
when does post primary diseae often occur
1- 5 year after - u p to 40 years
28
what are the symphotns of tb
cough , fver, night sweats, weight loss
29
what are some of the tests for tb
unable crp and esr cxr, sputm coulbr bronchipsy with ball ebus lumbar punctin in cns tb urine in urogient tb apart bipsy form tisues
30
when should a ct be considered for tb
norma cxr hbut clian ysuspication, miliary tb, cavitaiotn and other differtaion, lymphadopahy, targes for bal
31
what are signs on a chest xr for tb
medial synapth lympahoty , pulmary effusion, millary
32
what does post primary tb look like on a cxr
fluffy upper noduyle space, lyjmphadopy
33
what drus are used to trate tb
isonizid, pyrazinamide, rifampicin and ethambutol
34
what happens if you single agent treat tb
leads to multop drug resiant oransim
35
how long is tb ttherapy
6 monts
36
what tests whoucl be done before the onset of tb thearapy
hiv, hep b and c
37
which drugs are taken for 2 mots
isonizid, pyrazinamdie, rifapicin and ethambutol
38
what durgs are tkaen for the last 4 months
isoniazid and rifampicin
39
what supplemts whoud be taken during tb
vitamen b 6 - pyridoxine - redues risk of nerupath sertorisds, - pericarial and for millary tb vitament d subitution
40
what are the side effects of rifapicin
orange urine/ leatrs, incudes liver enzymes * perdinsol and anticonvulsants) makes all hormoal contrasipie ineffecive risk of hep
41
what is the risk of isoniazid
hep preipahl nerupiay ( reduced iwhth pryidoxine b6)
42
what is the risk of pyrazinamide
gout , hep
43
what isthe risk of ethanbutol
opitical neruapthy
44
who gets bcg
all whose are bron in a cought with incied of tb great tna 40/100000
45
who shouod be screend for latent tb
those with active pulmonary or lyangeal tb less than 65 due to the hepatotxicity risk - chest xray over 66 should have chest xry to rule out active tb only new entrants fromhigh rsik areas tnf alpha inhibtirs
46
what screeing is doe for laent tb
cxr, mantoux skin test or interferon gamma relase assay blood test
47
what is the diagnos for latent tb
noralr chxr, postive igra, asympocnatic