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. Conditions that create a ‘dead space effect’ are (a) high V/Q units in a heterogenous lung, and (b) shunt. Alveolar dead space fraction can be estimated at the bedside, but its sensitivity appears to be. Types of Dead Spaceĭead space from equipment, such as tubes ventilator circuitry. The causes of true dead space are (a) anatomical dead space and (b) alveolar dead space. As a consequence, PE causes an increase in alveolar dead space. 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 Carbon dioxide levels alter in response to alveolar ventilation (VA) changes caused by respiratory depression, airway obstruction, and increased dead space.
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