Which parameters are set in pressure control ventilation?

In pressure control ventilation, the key parameters that are set include the pressure limit, respiratory rate, FiO2 (fraction of inspired oxygen), and PEEP (positive end-expiratory pressure). This mode of ventilation is designed to deliver a set pressure during each breath, which helps to ensure that the patient receives sufficient ventilation while protecting the lungs from excessive pressure that could lead to barotrauma.

Setting the pressure limit ensures that the ventilator delivers air into the lungs with a controlled pressure, which is critical in managing patients with compromised lung function. The respiratory rate determines how many breaths per minute the patient receives, facilitating adequate ventilation and oxygenation. FiO2 is essential for managing the oxygen availability to the patient, particularly in cases of hypoxia. PEEP helps to maintain alveolar recruitment, reducing the risk of lung collapse by keeping the alveoli open at the end of expiration.

Other parameters such as tidal volume, flow rate, inspiratory time, and flow pattern may be influenced by the pressure set but are not directly controlled in the same way as the parameters mentioned. Therefore, the inclusion of pressure limit, respiratory rate, FiO2, and PEEP makes option B the most accurate representation of the parameters set in pressure control ventilation.