The nurse is caring for a client who is being mechanically ventilated. What strategies have been shown to prevent ventilator- acquired pneumonia (VAP)?

A. Setting the defibrillator where it will be synchronized to the client's T wave: Synchronization is set to the R wave, not the T wave, to avoid delivering a shock during ventricular repolarization, which could precipitate ventricular fibrillation. Setting the defibrillator to the T wave would be unsafe and is not proper preparation for cardioversion.

B. Synchronizing the defibrillator to the down slope of the P wave: Synchronization to the P wave is incorrect because cardioversion targets ventricular activity, not atrial depolarization. The R wave of the QRS complex is the correct point for synchronization to ensure safe delivery of the shock.

C. Having emergency equipment and oxygen available: Emergency equipment, including a crash cart, airway supplies, and oxygen, must be immediately available in case the client develops life-threatening arrhythmias or requires resuscitation. This preparation ensures safety and rapid intervention if complications arise during the procedure.

D. Allowing the client only clear liquids until the procedure is over: While fasting may be required for sedation, restricting to clear liquids is not the primary preparation focus for cardioversion. The critical priority is ensuring safety and readiness for emergencies, not dietary management immediately before the procedure.

A. Increased respiratory rate: An elevated respiratory rate may indicate ongoing respiratory distress or pain rather than improvement. While monitoring respiratory rate is important, an increase does not signify that the chest injury is resolving or that the lung has re-expanded. It may reflect compensatory effort due to hypoxia or discomfort.

B. Increased breath sounds: The return or improvement of breath sounds on auscultation indicates that the previously collapsed or injured lung is re-expanding and ventilation is improving. This is a direct sign that the chest tube is effectively removing air or fluid and that the client is responding positively to treatment.

C. Constant bubbling in the drainage chamber: Continuous bubbling usually suggests an air leak in the chest tube system, which is a complication rather than a desired response. Intermittent bubbling may occur with exhalation, but constant bubbling signals that the system is not fully sealed.

D. Fluctuation of drainage in the tubing: Fluctuation, or tidaling, reflects changes in intrathoracic pressure and is normal initially. While it indicates patency of the tube, it does not directly signify resolution of the lung injury. Over time, the goal is stabilization with minimal fluctuation as the lung fully re-expands