front 1 Tuberculosis definition | back 1 Multisystemic chronic necrotising disease caused by Mycobacterium Tuberculosis |
front 2 Tuberculosis pathogenesis | back 2 Mycobacterium tuberculosis is transmitted via inhalation of droplet nuclei and reaches the alveoli, where it is phagocytosed by macrophages but survives intracellularly by inhibiting phagolysosome fusion. This triggers a cell-mediated immune response, leading to granuloma (tubercle) formation with caseous necrosis. The infection may then be contained as latent TB or progress to active disease if immune control fails. |
front 3 TB infection control | back 3
1. Administrative
Find TB early
Open windows
N95 for staff
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front 4 Administrative controls TB | back 4
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front 5 Environmental controls TB | back 5 A. Adequate Ventilation
B. Mechanical Ventilation
C. Ultraviolet Germicidal Irradiation (UVGI)
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front 6 Personal Protective Measures TB | back 6 For Healthcare Workers: N95 Respirators
For Patients: Surgical Masks
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front 7 Cough etiquette/respiratory hygiene TB | back 7 Patients should be advised to:
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front 8 Isolation of infectious patients TB | back 8 Patients with suspected or confirmed pulmonary TB may require:
Especially:
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front 9 Community-level infection control | back 9 Reduce Overcrowding
Health Education
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front 10 TB Preventive Therapy(TPT) | back 10 TB preventive therapy is the administration of anti-tuberculosis medication to individuals at risk of developing active TB in order to prevent progression from latent infection to active disease. It is commonly given to household contacts, especially children under five years of age, and people living with HIV after active TB has been excluded. |
front 11 Pyridoxine | back 11 Vitamin B6 |
front 12 TB Prevention | back 12 TB Prevention
Primary
Tertiary
Rehabilitation |
front 13 What is a Ghon complex? | back 13 A Ghon focus (small subpleural granuloma in the lower/mid lung) + enlarged ipsilateral hilar/mediastinal lymph nodes. It is the hallmark of primary TB in a child or immunocompetent host. |
front 14 What is a Ranke complex? | back 14 A healed, calcified Ghon complex seen years later on CXR. Shows a calcified lung nodule + calcified hilar lymph node. Indicates the patient was infected but contained the bacteria (now latent). |
front 15 What is GeneXpert? | back 15 A rapid molecular test (NAAT) that detects M. tuberculosis DNA and Rifampicin (RIF) resistance (via rpoB gene mutation) directly from sputum within 2 hours. In Zambia, it is the frontline diagnostic test for all presumptive TB patients. |
front 16 Define MDR-TB | back 16 Multi-Drug Resistant TB: Resistance to at least Isoniazid (INH) AND Rifampicin (RIF) – the two most powerful first-line anti-TB drugs. |
front 17 Define XDR-TB | back 17 Extensively Drug-Resistant TB: MDR-TB PLUS resistance to any Fluoroquinolone (e.g., Levofloxacin) AND at least one of the second-line injectables (Amikacin, Kanamycin, or Capreomycin). |
front 18 Outline treatment of drug-susceptible TB | back 18 1. Intensive phase (2 months) RHZE daily 2. Continuation phase (6 months)
Fixed-Dose Combinations (FDCs) are used for adult
TB. |