In PRVC mode of MMV, which variable is specifically adjusted?

In PRVC mode of MMV, which variable is specifically adjusted?

• A. Flow and inspiratory pressure
• B. Tidal volume and inspiratory time
• C. Respiratory rate and pressure support
• D. FiO2 and PEEP

Answer: (B)

In PRVC (Pressure Regulated Volume Control) mode of Mandatory Minute Ventilation (MMV), the primary goal is to ensure that the patient receives a specific tidal volume while also minimizing the risk of barotrauma and ventilator-induced lung injury. In this mode, the ventilator adjusts the pressure delivered during each breath to achieve the target tidal volume. Tidal volume is a critical parameter as it directly correlates with the patient's ventilation needs. The ventilator uses feedback mechanisms to monitor the delivered tidal volume and adjusts the inspiratory pressure accordingly. This allows for maintaining consistent ventilation irrespective of changes in lung compliance or airway resistance. By focusing on both tidal volume and inspiratory time, the ventilator ensures effective gas exchange while preserving patient safety. The other options involve variables that, while important in ventilation management, do not specifically reflect the primary adjustments made in PRVC mode. For example, flow adjustments, respiratory rate, and pressure support adjustments are factors considered in other modes or settings but do not embody the direct adaptive strategy of PRVC to maintain targeted tidal volume.

In PRVC (Pressure Regulated Volume Control) mode of Mandatory Minute Ventilation (MMV), the primary goal is to ensure that the patient receives a specific tidal volume while also minimizing the risk of barotrauma and ventilator-induced lung injury. In this mode, the ventilator adjusts the pressure delivered during each breath to achieve the target tidal volume.

Tidal volume is a critical parameter as it directly correlates with the patient's ventilation needs. The ventilator uses feedback mechanisms to monitor the delivered tidal volume and adjusts the inspiratory pressure accordingly. This allows for maintaining consistent ventilation irrespective of changes in lung compliance or airway resistance. By focusing on both tidal volume and inspiratory time, the ventilator ensures effective gas exchange while preserving patient safety.

The other options involve variables that, while important in ventilation management, do not specifically reflect the primary adjustments made in PRVC mode. For example, flow adjustments, respiratory rate, and pressure support adjustments are factors considered in other modes or settings but do not embody the direct adaptive strategy of PRVC to maintain targeted tidal volume.