Answer to Question 1
4
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1. A chest x-ray is the least invasive and can visualize the lung fields. The other answers require sedation, making the infant NPO prior to studies.
2. A chest x-ray is the least invasive and can visualize the lung fields. The other answers require sedation, making the infant NPO prior to studies.
3. A chest x-ray is the least invasive and can visualize the lung fields. The other answers require sedation, making the infant NPO prior to studies.
4. A chest x-ray is the least invasive and can visualize the lung fields. The other answers require sedation, making the infant NPO prior to studies.
Answer to Question 2
Stridor
Stridor is a harsh, high-pitched inspiratory respiratory sound that is characteristic of croup.