![]() ![]() In this method, after an inhalation of oxygen, the nitrogen concentration in an individual’s exhalation is plotted against exhaled volume. The most commonly used method for measuring anatomic dead space in a research setting is the single-breath technique developed by Fowler in 1948. What is the basic technique for performing the Fowler method for anatomic dead space determination? The inspired gas enters the alveoli, and the last part of this tidal volume stays in the conducting airways (anatomical dead space). What is Fowlers method?įowler’s technique measures anatomical dead space through nitrogen concentration analysis of expired air after a single inspiration of 100% oxygen. The respiratory zone is comprised of respiratory bronchioles, alveolar duct, alveolar sac, and alveoli. Physiologic or total dead space is equal to anatomic plus alveolar dead space which is the volume of air in the respiratory zone that does not take part in gas exchange. ![]()
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