The combined volume of these two areas is often referred to as physiologic dead space.
Some apparatus dead space may actually reduce total dead space, as an ETT bypasses the majority of anatomical dead space of the patient (nasopharynx).ĭead space from the patient. Dead space ventilation (VD) includes (1) air that enters only conducting airways (referred to as anatomic dead space) and (2) air that reaches alveoli but does not exchange carbon dioxide or oxygen with the capillary blood. Types of Dead Spaceĭead space from equipment, such as tubes ventilator circuitry. Glomerular Filtration and Tubular Functionĭead space is the proportion of minute ventilation which does not participate in gas exchange. Functional Anatomy and Control of Blood Flow Anatomic, airway, or tracheal, dead space is the part of the tidal volume that does not participate in gas exchange. When physiological dead space (Vd(p)) is calculated for a patient who has alveolar dead space, e.g., after pulmonary vascular occlusion, less than the full.
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