Pressure Regulated Volume Control

Pressure Regulated Volume Control

Pressure Regulated Volume Control (PRVC) is a ventilator mode where the breaths are delivered mandatorily to assure preset volumes, with a constant inspiratory pressure continuously adapting to the patient's condition. The flow pattern is decelerating. This mode is a form of assist control mode of ventilation, the breaths can either be ventilator initiated or patient initiated. This mode combines the advantages of volume controlled and pressure controlled Ventilation.

How the ventilator achieves PRVC mode

The 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.
Reference: [http://www.aic.cuhk.edu.hk/web8/download.htm#Introduction%20to%20pressure%20regulated%20volume%20control%20mode Proceedings of the International Critical Care Conference, Dubai, April 8-10th 2008]


Wikimedia Foundation. 2010.

Игры ⚽ Нужен реферат?

Look at other dictionaries:

  • Pressure controlled intermittent mandatory ventilation — (PC IMV) is any mode of mechanical ventilation with preset inspiratory pressure (Pressure Control) and inspiratory time (Ti). Spontaneous breaths (i.e., inspiration is patient triggered and patient cycled) can exist between mandatory breaths… …   Wikipedia

  • Pressure vessel — Vertical pressure vessels installed in a structure A pressure vessel is a closed container designed to hold gases or liquids at a pressure substantially different from the ambient pressure. The pressure differential is dangerous and many fatal… …   Wikipedia

  • PRVC — pressure regulated volume control [respiration] …   Medical dictionary

  • PRVC — • pressure regulated volume control [respiration] …   Dictionary of medical acronyms & abbreviations

  • Mechanical ventilation — In architecture and climate control, mechanical or forced ventilation is the use of powered equipment, e.g. fans and blowers, to move air  see ventilation (architecture). Mechanical ventilation Intervention …   Wikipedia

  • Modes of mechanical ventilation — Contents 1 Positive and negative pressure ventilation 1.1 Negative pressure ventilation 1.1.1 Types of negat …   Wikipedia

  • Искусственное дыхание — Эту статью следует викифицировать. Пожалуйста, оформите её согласно правилам оформления статей. Искусственное дыхание (искусственная вентиляция легких, ИВЛ)  комплекс мер, направленных на поддержание оборота в …   Википедия

  • Environmental Control System — The Environmental Control System of an airliner provides air supply, thermal control and cabin pressurization for the passengers and crew. Avionics cooling, smoke detection, and fire suppression are also commonly considered part of the… …   Wikipedia

  • International Narcotics Control Board — The International Narcotics Control Board (INCB) is the independent and quasi judicial control organ for the implementation of the United Nations drug conventions. It plays an important role in monitoring enforcement of restrictions on narcotics… …   Wikipedia

  • Traffic Control — ➡ law enforcement * * * Introduction       supervision of the movement of people, goods, or vehicles to ensure efficiency and safety.       Traffic is the movement of people and goods from one location to another. The movement typically occurs… …   Universalium

Share the article and excerpts

Direct link
Do a right-click on the link above
and select “Copy Link”