What does Pressure Regulated Volume Control (PRVC) primarily aim to achieve?

What does Pressure Regulated Volume Control (PRVC) primarily aim to achieve?

• A. Fixed tidal volume through constant pressure
• B. Adjusts pressure to maintain consistent tidal volume
• C. Reduces tidal volume regardless of pressure
• D. Provides spontaneous breathing support only

Answer: (B)

Pressure Regulated Volume Control (PRVC) is designed to deliver a set tidal volume while allowing for adjustments in airway pressure. The primary goal is to maintain a consistent tidal volume by modulating the pressure delivered to the patient based on the patient's lung mechanics and compliance. If the pressure required to deliver the set tidal volume exceeds a predetermined limit, the ventilator automatically adjusts to ensure that the tidal volume remains consistent without exceeding the set pressure limit. This adaptability allows PRVC to provide effective ventilation while minimizing the risk of barotrauma or over-distention of the lungs, making option B the correct choice. In contrast, the other options do not accurately describe the primary goal of PRVC. For instance, aiming for a fixed tidal volume through constant pressure would not account for changing lung conditions, while reducing tidal volume regardless of pressure does not align with the ventilatory strategy of PRVC, which seeks to achieve a target tidal volume. Additionally, mentioning that it only provides spontaneous breathing support misrepresents the mode, as PRVC can support both controlled and assisted ventilation mechanisms.

Pressure Regulated Volume Control (PRVC) is designed to deliver a set tidal volume while allowing for adjustments in airway pressure. The primary goal is to maintain a consistent tidal volume by modulating the pressure delivered to the patient based on the patient's lung mechanics and compliance. If the pressure required to deliver the set tidal volume exceeds a predetermined limit, the ventilator automatically adjusts to ensure that the tidal volume remains consistent without exceeding the set pressure limit. This adaptability allows PRVC to provide effective ventilation while minimizing the risk of barotrauma or over-distention of the lungs, making option B the correct choice.

In contrast, the other options do not accurately describe the primary goal of PRVC. For instance, aiming for a fixed tidal volume through constant pressure would not account for changing lung conditions, while reducing tidal volume regardless of pressure does not align with the ventilatory strategy of PRVC, which seeks to achieve a target tidal volume. Additionally, mentioning that it only provides spontaneous breathing support misrepresents the mode, as PRVC can support both controlled and assisted ventilation mechanisms.