A patient has rapid, shallow breathing after abdominal surgery. Which measurement best reflects the amount of fresh air reaching the alveoli each minute?
Correct answer: B. Alveolar ventilation
- A. Tidal ventilation
- B. Alveolar ventilation
- C. Residual ventilation
- D. Inspiratory reserve
Explanation
Alveolar ventilation is the volume of fresh air reaching the alveoli each minute after dead-space air is excluded. Tidal ventilation includes both alveolar air and air remaining in the conducting passages.
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About Respiratory System
The respiratory system includes the air passages, lungs, pleura, alveoli and the mechanics of breathing. It explains pulmonary ventilation, gas exchange, oxygen and carbon dioxide transport, regulation of breathing, and the difference between external respiration in the lungs and internal respiration in body tissues.
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