In the early days of the COVID pandemic, the World Tuberculosis Day was marked, with the Theme: "It is Time". It is time to take action, to ensure universal access to treatment, to stop stigma and discrimination, and to end TB.
I had the opportunity to present this topic as part of the wellness efforts for our staff members. Many of our patients live with TB, many of our staff develop TB in the process, and the COVID pandemic was already in the country, complication case identification and case management of the disease.
9. BUT FIRST, LET’S
TOUCH ON COVID-19
Disclaimer:
Information regarding
COVID-19 presented here
was valid as of 18th March
2020…
And was for the purpose of
staff wellness of the above
named hospital
36. EXTRA PULMONARY TB
• 1) Lymph node TB ( tuberculous lymphadenitis)
• 2) Pleural TB
• 3) TB of Upper airways
• 4) Genitourinary TB
• 5) Skeletal TB
• 6) Gastrointestinal TB
• 7) TB Meningitis & Tuberculoma
• 8) TB Pericardiatis
• 9) Milliary
• 10) Other Less common Extra Pulmonary TB
37. Xpert MTB/RIF
• GXP is the a molecular
testing
• It is the first line testing
modality.
• May be used on sputum
and other body fluids
and tissues for the
diagnosis of TB
43. SMEAR MICROSCOPY: rapid; 40-70% yield on sputum
Ziehl-Neelsen:
• Acid fast bacilli
• Requires 5000 -10 000 bacilli/ml
• Low tech
Auramine-O fluorescent:
• 10% more sensitive
• More expensive
44. SMEAR MICROSCOPY: rapid; 40-70% yield on sputum
• Smear grading for sputum microscopy:
• 3+ over 10 AFB’s per field
• 2+ 1 to 10 per field
• 1+ 10 - 99 per 100 fields
• Scanty 1-9 per 100 fields
• Neg. no AFB per 100 fields
• Remember smear quantification NOT equivalent to Xpert® MTB/RIF
quantification
45. TB CULTURE
Solid media:
Lowenstein-Jensen media
Time to positivity: 23-30days
• gold standard
•Picks 5-10 bugs
•75-90% yield on
sputum
• 5-10%
contamination
rates
• Allows species
identification &
sensitivity
Liquid media:
Automated eg. Bactec MGIT
960
Time to positivity: 10-22 days
Now largely replaced solid
media
46. OTHER DIAGNOSTIC MODALITIES
• Pleural aspirate in Pleural Effusion
• Pericardial aspirate in TB Pericarditis
• Abdominal ultrasound for TB Abdomen
• Ascitic tap for TB Abdomen
• Lumbar puncture (CSF) for TB Meningitis
• Biopsy – e.g. in lymph node, skin lesions
• … and so forth
48. CHEST XRAY IN TB
• 1. Infiltrate or consolidation: coarse reticulonodular densities Dense
homogenous opacity
• 2. Any cavitary lesion
• 3. Nodule with poorly defined margins
• 4. Pleural effusion
• 5. Hilar or mediastinal lymphadenopathy
• 7. Other - Any other finding suggestive of active TB, such as miliary TB.
• *. OLD TB: Discrete fibrotic scar/volume loss or retraction/upper lobe
bronchiectasis
57. TB TREATMENT: RHZE/RH
• For drug sensitive TB
• i.e. Rifampicin sensitive on Gene
Xpert:
• 4 FOR 2 (RHZE for 2months)
• Then
• 2 FOR 4 (RH for 4months)
• CONSIDERATIONS:
• Weight adjust for everyone
• Renally adjust in renal impairment
• Liver friendly in DILI (drug induced
liver injury)
• MDR/XDR management (if drug
resistant)