Non-communicable disease Flashcards
What bacteria cases TB
Mycobacterium tuberculosis
How does TB spread?
In air by droplets
Released when coughing or sneezing
Takes a period until it infects
Course of infection of TB?
Bacteria grows in upper region of lungs
Phagocyte ingest them
They would be encased in tubercles(nodule)
In healthy people immune system prevents TB in tubercles to develop
So inactive and not replicating
So when immunosuppresion, they activate and replicate
If replicating, it causes damages to alveoli and capillaries
Resulting in fibrosis and reducing of gas exchange
TB can also spread to body causing damage
Symptoms of TB?
Persistent cough
Breathing difficultie
Chest pain
Fatigue and loss in appetite leading to weight loss
Fever and night sweats
Prevention of TB?
They are resistant to antibiotics
Vaccination - BCG vaccine is made from weakened TB bacteria and around 75% effective to severe TB common in kids, but useless at one common in adults
Better education about TB - complete all dosage of medication
Isolate TB patients
Improve health facilities in developing countries
Better nutrition
Treatment of TB?
Antibiotic - usually rifampicin and isoniazid, long period treatment required
DOTS - patients monitored to complete dosage in hospital to prevent antibiotic resistance
Surgical treatment - if medication is ineffective, 1 to 2 ribs removed and a diseased lung or parts it’s removed