The nurse is instructing an unlicensed assistant on how to collect a urine specimen from an indwelling catheter. Which of the following statements indicates that the assistant understands the instructions
A．"I will empty the catheter drainage bag, have the client drink some water, and an hour later collect the urine that drains into the bag. "
B．"I will get a sterile syringe and remove urine from the catheter through the collection port to place in the specimen container. "
C．"I should collect urine from the catheter drainage bag at the end of the shift and place it in the specimen container. "
D．"I will disconnect the drainage tube from the catheter and let urine run from the catheter into the specimen container. "
参考答案：B
解析：When obtaining a urine specimen from an indwelling catheter, a sterile syringe and needle should be used to access the catheter port that allows removal of urine from the closed system. This technique preserves sterility of the system and the urine specimen.