Which action is part of phase 3 of mechanical ventilation?

Phase 3 of mechanical ventilation is primarily focused on the process of weaning the patient off the ventilator. This phase is critical because it assesses the patient's readiness to breathe independently and reduces their reliance on mechanical support. Implementing weaning procedures involves systematically decreasing ventilatory support while monitoring the patient's response, which can include checking vital signs, oxygen saturation, and overall clinical status.

This careful management helps clinicians determine when a patient can transition back to spontaneous breathing. The weaning process may involve trials of reduced pressure support or transitioning to CPAP (Continuous Positive Airway Pressure) settings, depending on the patient’s stability and recovery progress.

The other options, while relevant to the overall management of mechanical ventilation, do not specifically pertain to the focus of phase 3. Introducing ventilator settings takes place earlier in the process to establish baseline support, adjusting oxygen concentration is typically done throughout mechanical ventilation, and monitoring ventilator alarms is an ongoing responsibility to ensure patient safety and appropriate mechanical ventilation throughout all phases.