What do humans inhale?

Correct answer is option B – the oxygen tubing is pinched.

The high - pitched whistling sound the nurse suddenly hears in client with acute bronchitis receiving supplemental oxygen means the oxygen tubing is pinched. The High pitched sound is mostly caused by any form of obstruction, blockage or narrowing of the oxygen tube.

The water level in the humidifier reservoir is not low, if it is, the oxygen tube will look dry and a high pitched whistling will not be noticed. Therefore option A is wrong.

If the client has a nasal obstruction, he would be uncomfortable and most likely make complain to a nurse. Option C is wrong.

An oxygen supplement via nasal cannula cannot deliver an oxygen concentration that is above 44%. Option D is wrong.

The oxygen tubing is pinched.-rationale: pinching of the tubing used to deliver oxygen causes a high-pitched whistling sound. when the water level in the humidifier reservoir is too low, the oxygen tubing appears dry but doesnt make noise. a client with a nasal obstruction becomes more uncomfortable with nasal prongs in place and doesnt experience relief from oxygen therapy; the clients complaints, not an abnormal sound, would alert the nurse to this problem. a nasal cannula cant deliver oxygen concentrations above 44%.client needs category: safe, effective care environmentclient needs subcategory: safety and infection controlcognitive level: applicationreference: taylor, c., et al. fundamentals of nursing: the art and science of nursing care, 6th ed. philadelphia: lippincott williams & wilkins, 2008, p. 1650.