Prior to an amniocentesis, the nurse should instruct the client to void to reduce the risk of bladder puncture. Which option lists this as a pre-procedure instruction?

• A. The client voids prior to the procedure.
• B. The client drinks water to fill the bladder.
• C. The client remains seated.
• D. The client receives a sedative.

Answer: (A)

Before an amniocentesis, emptying the bladder is advised because a full bladder sits in the path where the needle must pass to reach the amniotic sac. An empty bladder lowers the risk of puncturing the bladder during needle insertion and helps the clinician visualize and access the amniotic fluid safely with ultrasound guidance. That’s why instructing the client to void beforehand is the appropriate pre-procedure instruction. Drinking water to fill the bladder would increase the risk of puncture; remaining seated or giving a sedative do not address this risk.