A 30-year-old patient has breathlessness, constitutional symptoms and a pleural effusion. Pleural fluid analysis is done. Which finding suggests tuberculosis?
سؤال مجاني 1 من 10 اليوم · اشترك وكمّل بدون حد
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الإجابة: B. High adenosine deaminase (ADA)
Tuberculous pleural effusion is an exudate (usually lymphocytic) and a high pleural adenosine deaminase (ADA > 40) strongly supports TB. Neutrophil predominance suggests parapneumonic effusion/empyema, TB effusions tend to have low (not high) glucose, and a transudate points to causes like heart failure, not TB.
ليش كل خيار صح أو غلط
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A
ليش غلط
High pleural WBCs (> 50K) with low pH and positive cultures support empyema or complicated parapneumonic effusion; TB is flagged by AFB and ADA instead.
✓ 7• Pleural Diseases [Notes].pdf · p. 8 -
B
ليش صح
In tuberculous effusion, adenosine deaminase (ADA > 40) is the most sensitive pleural fluid test, sent together with AFB culture.
✓ (Y4)-(M B) Pneumonia and pleural effusion - Resident.pdf · p. 21 -
C
ليش غلط
TB is listed under low pleural glucose (↓↓ glucose), not high glucose.
✓ 7• Pleural Diseases [Notes].pdf · p. 8 -
D
ليش غلط
TB is worked up as a cause of an exudative effusion (AFB stain and ADA), not a transudate.
✓ 7• Pleural Diseases [Notes].pdf · p. 8
- المصدر
- (Y4)-(M B) Pneumonia and pleural effusion - Resident.pdf · p. 21
7• Pleural Diseases [Notes].pdf · p. 8 - المحاضرة
- Tuberculosis · Pulmonology · Module B
- ظهر في
- MED42 ♂ EOM B