![]() What is alveoli dead space?Īlveolar dead space is believed to be an index of the uniformity of blood flow distribution to the lung. Roughly, the fraction of alveoli without blood flow equals the fraction: alveolar dead space/alveolar tidal volume. … This is believed to be due primarily to changes in the distribution of alveolar ventilation. Which disease is the alveoli ventilated but not perfused? Lung areas that are ventilated but not perfused form part of the dead space. Alveolar dead space is potentially large in pulmonary embolism, COPD, and all forms of ARDS. What Is Pulmonary Shunt? Another contributor to ventilation perfusion mismatch is shunt. ![]() ![]() Shunt is the opposite of dead space and consists of alveoli that are perfused, but not ventilated. In pulmonary shunt, alveoli are perfused but not ventilated. What is the difference between anatomical and alveolar dead space?Īnatomical dead space is the volume of air that is in the conducting zone of the lung.
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