9/20/2023 0 Comments Anatomic dead space vs physiologic![]() The value of Residual volume is found to be $1200$ ml in the case of males and $960$ ml in the case of females.ĭead space is a part of the respiratory tract, containing a part of inspired air not participating in a gaseous exchange with blood capillaries and the amount of air present in the dead space is known as the dead space air. Residual volume is the amount of air found in both the lungs after a forceful expiration. Various lung diseases are diagnosed by the physiological dead space volume. Residual volume is a normal phenomenon but the dead space volume(physiological dead space) occurs due to lack of the blood supply into the alveoli resulting in the improper gaseous exchange of the alveoli. ![]() 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.Hint: No, residual volume and dead space volume are not synonymous. Indeed, it may serve as a prognostic factor in patients with acute repository distress syndrome (ARDS) who require ventilation. 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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