Question

Difficulty: MediumReduction of Risk Potential

A nurse is preparing to collect a sterile urine specimen for a culture and sensitivity test from a client who has a closed indwelling urinary catheter system. In which order should the nurse perform the following actions to reduce the risk of infection and ensure an accurate diagnostic sample? Arrange the steps from first to last.

  1. 1Clamp the drainage tubing just below the sampling port for a brief period.
  2. 2Cleanse the needleless sampling port with an appropriate antiseptic swab.
  3. 3Attach a sterile syringe to the sampling port and aspirate the required volume of urine.
  4. 4Transfer the aspirated urine from the syringe into a sterile specimen container.
  5. 5Unclamp the catheter drainage tubing to allow continuous urine flow.

Answer

The correct sequence is to first clamp the tubing to collect fresh urine, cleanse the port to maintain sterility, aspirate the urine with a sterile syringe, transfer the sample into a sterile container, and finally unclamp the tubing to restore urinary flow.
Obtaining a sterile urine specimen from an indwelling catheter requires strict adherence to sequence to ensure diagnostic accuracy and client safety. The nurse must first clamp the tubing to gather fresh urine. Next, the port must be cleansed to maintain strict asepsis before accessing it. Once disinfected, the urine is aspirated with a sterile syringe and placed securely in a sterile cup. Finally, the paramount safety step is unclamping the tubing to prevent bladder distension and subsequent kidney injury or infection.

Step-by-Step Solution

1
Clamp the drainage tubing just below the sampling port.
Fresh urine accumulates in the tubing above the port.
Ensures an adequate volume of freshly produced urine is available for the sample, as urine from the drainage bag is stagnant and not suitable for culture.
2
Cleanse the needleless sampling port with an antiseptic swab.
The surface of the sampling port is disinfected.
Prevents environmental pathogens from being pushed into the closed urinary system during aspiration, reducing the risk of CAUTI.
3
Attach a sterile syringe and aspirate the urine.
Urine is safely extracted from the closed system.
Maintains the sterility of both the diagnostic sample and the client's internal catheter system.
4
Transfer the urine into a sterile specimen container.
The sample is secured in an appropriate transport vessel.
Preserves the integrity of the diagnostic sample for accurate culture and sensitivity testing in the laboratory.
5
Unclamp the catheter drainage tubing.
Continuous urinary drainage is restored.
Prevents urine backflow, bladder distension, and associated complications that could increase the risk of injury or infection.

Key Concept

Reduction of Risk Potential: Diagnostic Test Preparation and Infection Control
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