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Resources: Glossary

The Glossary contains terms commonly associated with ventilators, the community, and respiratory physiology. Click on a hyperlinked letter to view the entries that begin with that letter, then scroll down in the window to find the word you are looking for.

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Dead Space (See Anatomical Dead Space).
Diffusion The physical process in which a substance moves from areas of higher concentration or pressure to lower concentration or pressure.
Digital Data represented in discrete, discontinuous form, as contrasted with analog data represented in continuous form.
Dual Control Modes Modes of ventilator operation in which two variables are controlled by independent feedback loops so that the benefits of each can be realized. (See Pressure Augmentation as an example.)
Dynamic Compliance (Cdyn) The change of volume divided by the change in pressure across a structure undergoing cyclic volume changes. The volume and pressure changes are measured between instants at which the volume is at a maximum followed by a minimum or vice versa.
Dyspnea Shortness of breath
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