Final answer:
The teaching point that is NOT recommended when using the PCA pump is option D: You may remove the PCA pump from your IV line when you go to the bathroom.
Step-by-step explanation:
The teaching point that is NOT recommended when using the PCA pump is option D: You may remove the PCA pump from your IV line when you go to the bathroom.
It is important not to remove the PCA pump because it delivers a controlled amount of medication to manage pain. Removing it may disrupt the pain management process and negatively affect the patient's comfort.
Therefore, options A, B, and C are valid teaching points to follow for Mr. Singh and his wife.