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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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Water Trap A device placed in the patient circuit to collect condensed liquids so that it will not collect in the circuit to block flow.
Watt unit of power.
Weaning The process of eliminating a patient's dependence on assisted ventilation provided by a mechanical ventilator. It involves strengthening the patient's respiratory muscles so that they can perform the work required for breathing.
WOB - Work of Breathing The work required to accelerate gas in the airways, to overcome airway resistance and to expand the elastic lung tissue so that air can be brought into the lungs and then exhaled. Routinely, just the work of inspiration is of interest.
Work In a pneumatic system, the incremental work performed in deforming a pressure vessel is the product of the pressure difference, DP, across the vessel times the resulting volume change, dV, i.e., dW = DPdV
Wye (See Patient Wye.)
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