问题
单项选择题
The nurse is caring for a toddler in respiratory arrest. The nurse will assist with endotracheal intubation and use an uncurled tube because the
A．vocal cords provide a natural seal.
B．trachea is shorter.
C．larynx is anterior and cephalad.
D．cricoid cartilage is the narrowest part of the larynx.
答案
参考答案：D
解析：The cricoid cartilage in the toddler is the narrowest part of the larynx and provides a natural seal. This keeps the endotracheal tube in place without requiring a cuff. The vocal cords are narrower in an adult. The trachea is shorter and the larynx is anterior and cephalad, but these aren't reasons to choose an uncurled tube.