Answer :
Final answer:
Increasing the suction catheter diameter (size) is the most effective way to increase the efficiency of suctioning through an endotracheal tube.
Explanation:
To increase the efficiency of suctioning through an endotracheal tube, the most effective approach would be to increase suction catheter diameter (size). This allows for a larger opening and better removal of secretions from the airway. The other options, such as increasing suction time or pressure, may not necessarily be effective and can even be harmful. Applying intermittent suction pressure during withdrawal of the catheter, as mentioned in option D, can also increase efficiency by facilitating removal of secretions.
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