Tuberculosis Flashcards
- What is Tuberculosis?
Tuberculosis is an infectious disease usually affecting the lungs
- What are the causative agents of Tuberculosis?
The causative agents of Tuberculosis are Mycobacterium tuberculosis
- How much of the world population is affected by M. tuberculosis?
M. tuberculosis affects one-third of the world population.
- What was the global incidence of TB in 2013?
In 2013
- What is the prevalence of TB in Ethiopia?
The prevalence of all forms of TB in Ethiopia is 211 per 100
- What is the incidence of TB in Ethiopia?
The incidence of all forms of TB in Ethiopia is 224 per 100
- What percentage of new TB cases in Ethiopia are HIV co-infected?
13% of all new TB cases in Ethiopia are HIV co-infected.
- How does HIV impact TB?
HIV increases the rate of TB reactivation
- What is the lifetime chance of TB reactivation in HIV patients?
HIV patients have a 50% lifetime chance of TB reactivation.
- How does TB affect HIV?
TB infection activates T-cells
- What are the nationally recommended TB/HIV collaborative activities?
Establish integrated TB and HIV services
- How is TB transmitted?
TB is transmitted through inhalation of infected droplet nuclei from coughing
- What determines an individual’s risk of TB exposure?
The concentration of droplet nuclei in contaminated air and the length of time spent breathing that air.
- What percentage of latent TB infections develop active disease?
Only 5-10% of latent TB infections develop active disease.
- What is the risk of progression to active TB in HIV patients?
HIV patients have a 10% annual risk and a 50% lifetime risk of progression to active TB.
- What are the risk factors for active TB among infected individuals?
Recent infection
- What is the difference between active TB and latent TB infection?
Active TB has symptoms
- What is primary TB?
Primary TB occurs in children under 5 years
- What is postprimary TB?
Postprimary TB
- What are the symptoms of pulmonary TB?
Symptoms include fever
- What is Ghon focus?
Ghon focus is a primary lesion in the lung caused by TB infection
- What is extrapulmonary TB?
Extrapulmonary TB affects organs other than the lungs
- What is lymph node TB?
Lymph node TB
- What is pleural TB?
Pleural TB presents with fever
- What is skeletal TB?
Skeletal TB affects weight-bearing joints like the spine (Pott’s disease)
- What is TB meningitis?
TB meningitis results from hematogenous spread of TB
- What are the stages of TB meningitis?
Stage I: lucid with no focal signs; Stage II: lethargy and confusion; Stage III: coma and seizures.
- How is TB diagnosed?
TB is diagnosed through sputum AFB microscopy
- What is the gold standard for TB diagnosis?
Sputum culture is the gold standard for TB diagnosis.
- What are the goals of anti-TB chemotherapy?
Goals include preventing morbidity and mortality
- What are the first-line drugs for TB treatment?
First-line drugs include Isoniazid
- What is the standard treatment regimen for new TB patients?
The standard regimen is 2 months of HRZE (Isoniazid
- What is the treatment for latent TB infection?
Latent TB is treated with Isoniazid for 6-9 months or Rifampicin for 4 months.
- What is MDR-TB?
MDR-TB is multidrug-resistant TB
- What is XDR-TB?
XDR-TB is extensively drug-resistant TB
- What is the impact of TB on HIV patients?
TB increases HIV viral load
- What is the role of HAART in TB/HIV co-infection?
HAART reduces the burden of TB in HIV patients and improves outcomes.
- What is the role of INH preventive therapy in TB/HIV co-infection?
INH preventive therapy reduces the risk of TB reactivation in HIV patients.
- What is the role of infection control in TB/HIV co-infection?
Infection control measures reduce the transmission of TB in healthcare settings.
- What is the role of early HAART in TB/HIV co-infection?
Early HAART reduces the risk of TB reactivation and improves survival in HIV patients.
- What is the role of intensive case finding in TB/HIV co-infection?
Intensive case finding ensures early diagnosis and treatment of TB in HIV patients.
- What is the role of sputum smear microscopy in TB diagnosis?
Sputum smear microscopy detects acid-fast bacilli and is used for initial TB diagnosis.
- What is the role of GeneXpert in TB diagnosis?
GeneXpert is a rapid molecular test that detects TB and rifampicin resistance.
- What is the role of chest X-rays in TB diagnosis?
Chest X-rays help identify pulmonary TB lesions
- What is the role of histopathology in TB diagnosis?
Histopathology helps diagnose extrapulmonary TB through tissue biopsy.
- What is the role of FNAC in TB diagnosis?
FNAC (Fine Needle Aspiration Cytology) is used to diagnose lymph node TB.
- What is the role of ADA in TB diagnosis?
Adenosine deaminase (ADA) levels in pleural fluid help diagnose pleural TB.
- What is the role of IFN-γ release assays in TB diagnosis?
IFN-γ release assays help diagnose latent TB infection.
- What is the role of TB culture in diagnosis?
TB culture is the gold standard for diagnosing TB and determining drug susceptibility.
- What is the role of TB treatment in preventing transmission?
Effective TB treatment reduces the infectiousness of patients and prevents transmission.