Which breathing pattern is often initially seen in lowlanders who ascend to high altitudes?

You have been called to the house of a young adult male who is unresponsive. The man lives by himself so no family is present. In trying to determine the origin of the patient's altered mental status, which of the following would most likely provide the best information?

A) Contact with medical direction B) Examination of medication containers C) Interpretation of assessment findings D) Observation of the living conditions in the house

Crackles (rales) are caused by _________.

A. severe bronchoconstriction B. narrowing of the upper airways C. mucus in the larger airways D. air passing through fluid