A patient with a Foley catheter needs a urine sample for culture and sensitivity. Because this requires a sterile sample, what is the most appropriate action for the nurse to take?
A. Disconnecting the drainage tube from the catheter
B. Opening the drainage bag and withdrawing urine
C. Withdrawing urine from the closed system drainage bag
D. Inserting a sterile blunt cannula in the catheter port to withdraw urine
D
Disconnecting the drainage tube from the catheter breaches sterile technique and can cause in-troduction of bacteria into the system. Because urine in the drainage bag can rapidly grow bacte-ria, never take a urine sample from the drainage bag.
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