Which investigation best confirms Croup?
Answer and explanation
Correct answer: B. Neck radiograph showing the steeple sign
- Step 1: The test that best confirms Croup is: neck radiograph showing the steeple sign.
Answer
Neck radiograph showing the steeple sign.
Why not the others: 'Lateral neck radiograph for epiglottitis': it looks for the thumb sign. 'Chest radiograph for pneumonia': it looks for consolidation. 'Throat swab culture': it identifies pharyngeal bacteria.
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