What are the appropriate controlled ventilation settings for a healthy 70 kg female undergoing ORIF of the right radius?

In the context of anesthesia and mechanical ventilation for a healthy adult undergoing an orthopedic procedure, the choice of tidal volume (TV) and respiratory rate (RR) is critical for ensuring adequate ventilation while preventing complications such as barotrauma or hypoventilation.

For a healthy 70 kg female patient, conventional guidelines for tidal volume typically recommend around 6-8 mL/kg of ideal body weight. Aiming for a tidal volume around 500 mL is appropriate for this body weight, as it aligns with the recommended volume for this patient's size. Specifically, using a tidal volume of 500 mL reflects the use of the lower end of the recommended range, which is advantageous in controlled ventilation to minimize respiratory complications while still ensuring adequate gas exchange.

Additionally, a respiratory rate of 8 breaths per minute is within a normal range for controlled ventilation in an operatively induced environment. This rate, alongside the tidal volume, maintains sufficient minute ventilation to meet the metabolic demands of the patient, promoting stable oxygen and carbon dioxide levels within the blood.

In contrast, the other options present either higher tidal volumes or lower respiratory rates that may not correspond adequately to the patient's needs, potentially leading to suboptimal ventilation strategies. Hence, the combination of 500 mL