The two types of dead space are anatomical dead space and. Hopefully the components of that volume of air will be clearer after reviewing the following illustrations. PEEP resulted in a fall in cardiac output and alveolar capillary perfusion with a concomitant rise in alveolar dead space-tidal volume ratio and arterial carbon. Dead space represents the volume of ventilated air that does not participate in gas exchange. And then real quick before we dive in: if you’re not familiar with the idea of dead space in general, it’s the concept that there is a difference between the quantity of air breathed in during a breath (tidal volume) and the volume of air that actually participates in gas exchange at the alveolar level (clinically relevant tidal volume). ![]() ![]() ![]() Dead space is a concept that we generally discuss in the context of mechanical ventilation – this short series of graphics won’t get into too much detail on that, but we can point you towards our free book on the idea: The goal here is simply to review the different types of dead space, demonstrate them graphically, and point out specific interventions for each of the various types. The series of illustrations in this post demonstrate the different types of dead space encountered in clinical practice and interventions to address them.
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