In pressure-regulated volume control (PRVC), what is the primary limit type?

In pressure-regulated volume control (PRVC), what is the primary limit type?

• A. Volume limited
• B. Flow limited
• C. Pressure limited
• D. Rate limited

Answer: (C)

In pressure-regulated volume control (PRVC), the primary limit type is pressure limited. This mode of ventilation is designed to ensure that a predetermined tidal volume is delivered to the patient while also maintaining the airway pressure below a set limit to prevent barotrauma and other complications associated with excessive pressure. PRVC combines features of both volume control and pressure control ventilation. It targets a specific tidal volume, allowing for variation in the pressure used to deliver that volume based on the compliance and resistance of the patient's lungs. If the patient’s lung mechanics change, the ventilator automatically adjusts the inspiratory pressure to achieve the desired volume without exceeding the set pressure limit. This provides a balance between maintaining adequate ventilation and safeguarding the patient from excessive airway pressures. Other limit types such as volume, flow, or rate are either not applicable in this mode or serve secondary roles in the functioning of PRVC. In essence, the protection of the patient from high pressures while achieving the necessary tidal volume is the hallmark of this ventilation strategy.

In pressure-regulated volume control (PRVC), the primary limit type is pressure limited. This mode of ventilation is designed to ensure that a predetermined tidal volume is delivered to the patient while also maintaining the airway pressure below a set limit to prevent barotrauma and other complications associated with excessive pressure.

PRVC combines features of both volume control and pressure control ventilation. It targets a specific tidal volume, allowing for variation in the pressure used to deliver that volume based on the compliance and resistance of the patient's lungs. If the patient’s lung mechanics change, the ventilator automatically adjusts the inspiratory pressure to achieve the desired volume without exceeding the set pressure limit. This provides a balance between maintaining adequate ventilation and safeguarding the patient from excessive airway pressures.

Other limit types such as volume, flow, or rate are either not applicable in this mode or serve secondary roles in the functioning of PRVC. In essence, the protection of the patient from high pressures while achieving the necessary tidal volume is the hallmark of this ventilation strategy.