A client with acute respiratory failure is intubated and placed on mechanical ventilation. Which intervention is most appropriate when suctioning the client
A. Insert the suction catheter while applying suction.
B. Apply suction until all the secretions have been removed.
C. Use the same catheter to first suction the mouth, then the endotraeheal tube.
D. Preoxygenate with 100% oxygen before suctionin
参考答案：D
解析：Preoxygenate the client with 100% oxygen before suctioning to prevent the hypoxia that occurs when the client is disconnected from the oxygen source and oxygen is removed from the airway during suctioning. To avoid hypoxia and trauma to the trachea, suction shouldn’t be applied when inserting the catheter. To prevent hypoxia, never suction longer than 15 seconds. A suction catheter that has been used to suction the mouth should be considered contaminated and shouldn’t be used to suction the endotracheal tube.