Which of the following is the most likely cause of uneven ventilation?
a. Low set tidal volumes
b. High inspiratory flow rates
c. High mean airway pressures
d. Elevated peak inspiratory pressures
ANS: B
Uneven ventilation is likely to occur with high inspiratory flow. If, for example, the right bron-chus is partially obstructed, most of the gas flow would go to the left lung because gas flow fol-lows the path of least resistance. Consequently, a larger volume enters the left lung, creating higher airway pressures in the left lung compared with the right.
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The cystic duct leaves the liver and leads to the:
A) vena cava. B) stomach. C) duodenum. D) gallbladder.
A 12-year-old has been taking an antibiotic for a respiratory infection. His mother called 911 because she believes her child has gotten worse despite the antibiotics. He is alert and oriented, and tells you that he does not have any difficulty breathing. He has a raised rash on his chest, arms, and back. His respiratory rate is 18, pulse is 92, and blood pressure is 108/72. You should suspect:
A) an overdose of the antibiotic. B) a generalized respiratory infection. C) a mild allergic reaction to the antibiotic. D) anaphylactic shock.