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Pressure Regulated Volume Control
Additional recommended knowledgeHow the ventilator achieves PRVC modeThe first breath delivered to the patient is a volume controlled breath. The measured plateau pressure is used as the pressure level for the next breath. The pressure is constant during the set inspiratory time and the flow is decelerating. The set tidal volume is achieved by automatic, breath-by-breath pressure regulation. The ventilator will adjust the inspiratory pressure control level, according to the mechanical properties of the airways/lung/thorax, to the lowest possible level to guarantee the preset tidal volume. If the measured tidal volume increases above the preset, the pressure level decreases in steps of maximum 3 cm H2O between consecutive breaths until the preset tidal volume is delivered. Maximum available pressure level is 5 cm H2O below a preset upper pressure limit.
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This article is licensed under the GNU Free Documentation License. It uses material from the Wikipedia article "Pressure_Regulated_Volume_Control". A list of authors is available in Wikipedia. |