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Pleural effusion-Light s criteria โ€” UPSC CMS MCQs (Medicine) · 4 questions

2020 P1 Q20

Q1. All of the following are causes of exudative Pleural Effusion, EXCEPT:

  1. SVC obstruction
  2. Fungal infection
  3. SLE
  4. Meig syndrome

Answer & explanation โ€” reveal it in the interactive practice above.

PYQ 2020โ€“2025 โ€” page 12

2022 P1 Q12

Q2. Low pleural fluid glucose (< 60 mg%) may be observed in which of the following? 1.Pyogenic pleural effusion 2.Rheumatoid pleuritis 3.Malignant pleural effusion 4.Hepatic hydrothorax Select the correct answer using the code below:

  1. 1, 2, and 3
  2. 1 and 2 only
  3. 1, 3, and 4
  4. 2, 3, and 4

Answer & explanation โ€” reveal it in the interactive practice above.

PYQ 2020โ€“2025 โ€” page 144

2024 P1 Q9

Q3. Consider the following criteria : 1. Pleural fluid protein : Serum protein ratio > 0.5 2. Pleural fluid LDH : Serum LDH ratio > 0.6 3. Pleural fluid LDH > Two-thirds of the upper limit of normal serum LDH Which of the above criteria, if present in pleural fluid, will indicate an exudate?

  1. 1 and 2 only
  2. 2 and 3 only
  3. 1 and 3 only
  4. 1, 2 and 3

Answer & explanation โ€” reveal it in the interactive practice above.

PYQ 2020โ€“2025 โ€” page 280

2025 P1 Q13

Q4. Consider the following pleural fluid analysis : pH โ€“ 7ยท6 Pleural fluid protein โ€“ 0ยท5 g/dL Serum total protein โ€“ 6ยท5 g/dL Pleural fluid LDH โ€“ 100 U/L Serum LDH โ€“ 300 U/L What is the most likely diagnosis ?

  1. Pancreatitis
  2. Myxoedema
  3. Sarcoidosis
  4. Rheumatoid arthritis

Answer & explanation โ€” reveal it in the interactive practice above.

PYQ 2020โ€“2025 โ€” page 374

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