How should the flow rate of nitrous oxide be adjusted during administration?

The flow rate of nitrous oxide should be based on the patient's response and comfort because individual patients can have varying levels of sensitivity and anxiety. Adjusting the flow rate allows for a customized and responsive approach to sedation, ensuring that the patient remains calm and comfortable throughout the procedure.

Monitoring the patient’s response helps in fine-tuning the administration to achieve the desired level of sedation without causing undue side effects or discomfort. Additionally, patient feedback is crucial in determining if the sedation is effective or if adjustments are needed to enhance their comfort.

This flexible approach contrasts with the other options, which imply a more static or fixed method of administration that may not take into account the unique needs of each patient.