TB Flashcards
define TB
this is a mycobacterium infection with M tuberculosis/bovis
gram stain of M. tuberculosis
gram +ve acid-fast bacilli
what does the presence of this mycobacterium cause the formation of?
caseating granulomas
presentation of TB
- night sweats
- haemoptysis
- cough, SOB
ghon focus
peripheral of the lung, can rupture through visceral pleura
assmann focus
apical TB lesion (secondary TB)
diagnosis of TB
- Ziehl-Neelson stain (positive is pink)
- CXR
- bloods
- sputum
- skin prick for latent TB
lymph node TB
enlarged cervical or supraclavicular nodes
biliary TB
spreads via the pulmonary vein to the liver, spleen and kidneys
active TB management
4 drugs for 2 months - rifampicin - isoniazid - pyrazinamide - ethambutol 2 drugs for 4 months - rifampicin - isoniazid
latent TB management
2 drugs for 3 months - rifampicin - isoniazid 1 drug for 6 months - isoniazid
what to use in TB if resistant?
streptomycin
adverse of streptomycin
hearing problems
adverse of rifampicin
orange tears and urine
adverse of isoniazid
peripheral neuropathy
hepatitis