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Define anatomical dead space11/5/2023 Dead sounds kind of ominous but it basically reflects the fact that this. Anatomical dead space occurs naturally in areas of the lungs that dont come in contact with alveoli (like the trachea). However, differences in the exact way of measuring this space result in clinically significant different results and, therefore, debate remains about the true value of this measured parameter.Ĭopyright © 2023, StatPearls Publishing LLC. The volume of air contained in this conducting zone is known as anatomic dead space. Indeed, it may serve as a prognostic factor in patients with acute repository distress syndrome (ARDS) who require ventilation. What is alveolar dead space Inspired gas that reaches the alveoli but is not perfused with blood and therefore not participant in gaseous exchange. This phenomenon has clinical significance because, both in healthy and impaired lungs, properly calculating and accounting for this non-physiological space is important for the proper respiratory care of ventilated patients. This is therefore termed anatomical dead space as it serves no respiratory function. Anatomic dead space is an important phenomenon in respiratory physiology whereby, owing to the fact that upper airways do not function as locations for gas exchange, and because of the tidal nature of ventilation, there is always a fraction of the inspired air that does not perform a physiologic function of exchanging carbon dioxide for oxygen.
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