What ventilator parameters are established by the clinician in PSV?

What ventilator parameters are established by the clinician in PSV?

• A. Flow and tidal volume only
• B. Inspiratory pressure and flow-cycle criteria
• C. PEEP and tidal volume only
• D. Mandatory respiratory rate and pressure

Answer: (B)

In Pressure Support Ventilation (PSV), the key ventilator parameters established by the clinician include inspiratory pressure and flow-cycle criteria. Inspiratory pressure is set to provide support during the inspiratory phase of breathing, allowing the patient to initiate breaths while the ventilator assists to the predefined pressure level. This pressure assists in augmenting the patient’s effort, helping them achieve a comfortable tidal volume based on their own respiratory drive. Additionally, flow-cycle criteria are established to determine when the ventilator should stop delivering pressure support. This is usually done based on the flow falling below a certain threshold, indicating that the patient is finishing inhalation. The combination of these two parameters allows for a more patient-driven approach, adapting to the patient's need for airflow and breath support while promoting natural breathing patterns. The other options do not encompass the primary focus of PSV, which aims to enhance the patient’s spontaneous efforts rather than establishing fixed mandatory parameters like tidal volume or respiratory rate.

In Pressure Support Ventilation (PSV), the key ventilator parameters established by the clinician include inspiratory pressure and flow-cycle criteria.

Inspiratory pressure is set to provide support during the inspiratory phase of breathing, allowing the patient to initiate breaths while the ventilator assists to the predefined pressure level. This pressure assists in augmenting the patient’s effort, helping them achieve a comfortable tidal volume based on their own respiratory drive.

Additionally, flow-cycle criteria are established to determine when the ventilator should stop delivering pressure support. This is usually done based on the flow falling below a certain threshold, indicating that the patient is finishing inhalation. The combination of these two parameters allows for a more patient-driven approach, adapting to the patient's need for airflow and breath support while promoting natural breathing patterns.

The other options do not encompass the primary focus of PSV, which aims to enhance the patient’s spontaneous efforts rather than establishing fixed mandatory parameters like tidal volume or respiratory rate.