NR 585 Week 3 Research Article Appraisal

Reference
Frontera, J. A., Wang, E., Phillips, M., Radford, M., Sterling, S., Delorenzo, K., Saxena, A., Yaghi, S., Zhou, T., Kahn, D. E., Lord, A. S., & Weisstuch, J. (2021). Protocolized urine sampling is associated with reduced catheter-associated urinary tract infections: A pre-and postintervention study. Clinical Infectious Diseases, 73(9), e2690–e2696. https://doi.org/10.1093/cid/ciaa1152

Provide an Overview of the Study

Purpose

The purpose of this study was to assess whether the timing and method of urine collection among patients with indwelling catheters affected the incidence of false-positive urinalysis (UA) results. The researchers aimed to determine if introducing a standardized urine sampling protocol could reduce misdiagnoses of catheter-associated urinary tract infections (CAUTIs). By focusing on diagnostic accuracy, the study sought to enhance infection control procedures and improve patient outcomes through evidence-based interventions.

Study Design

The study utilized a pre- and post-intervention design conducted over 18 months at two hospitals. The research was divided into two consecutive 9-month phases: one before the introduction of the urine sampling protocol and one after. This comparative structure enabled the researchers to measure the protocol’s impact on infection rates and diagnostic accuracy, providing a clear before-and-after analysis of its effectiveness.

Describe the Study

Research Question or Hypothesis

Research Question:
Does the implementation of a standardized urine sampling protocol decrease false-positive CAUTI diagnoses and infection rates among patients with indwelling urinary catheters?

Hypothesis:
The researchers hypothesized that protocolized urine sampling would reduce the misidentification of bacterial colonization as infection, resulting in fewer reported CAUTI cases and improved clinical outcomes.

Study Aims

Main Aim:
To evaluate whether a structured urine collection method decreases the incidence of CAUTIs and the overall duration of urinary catheter use in high-risk patients.

Secondary Aim:
To compare infection outcomes between the intervention hospital (which implemented the standardized sampling protocol) and the control hospital (which maintained standard procedures).

Sampling Technique, Sample Size, and Characteristics

Both hospitals followed the Centers for Disease Control and Prevention (CDC) recommendations for preventing CAUTIs. These included minimizing unnecessary catheterization, maintaining sterile insertion techniques, and ensuring proper catheter management.

In the intervention group, urine samples were obtained using sterile aspiration from a disinfected needleless port. This collection method aligned with CDC standards and ensured consistency across procedures.

Table 1
Sample Characteristics

Major Variables Studied

Independent Variable

The independent variable was the implementation of the urine sampling protocol. One hospital (intervention site) adopted the structured urine sampling procedure, while the other (control site) continued with traditional collection methods.

Dependent Variables

• Primary Outcome: Rate of catheter-associated urinary tract infections (CAUTIs).

• Secondary Outcome: Number of urinary catheter days per patient.

Table 2
Variables of the Study

Explain Why and How You Can Use the Study Results in Practice

The findings of this study are highly relevant to clinical nursing practice, as they highlight the importance of standardized urine sampling in reducing the prevalence of CAUTIs—one of the most common hospital-acquired infections. Traditional urine collection methods frequently lead to diagnostic errors, where bacterial colonization is mistaken for infection. This misdiagnosis often results in unnecessary antibiotic use, extended hospital stays, and higher healthcare costs.

By adopting the standardized urine sampling protocol, healthcare facilities can achieve the following benefits:

• Improved Patient Safety: Reducing infection risk directly enhances patient well-being and minimizes complications.

• Shorter Hospital Stays: Fewer CAUTI cases result in quicker recovery and earlier patient discharges.

• Antibiotic Stewardship: Accurate diagnosis limits inappropriate antibiotic use, supporting efforts to combat antimicrobial resistance.

• Cost Reduction: Decreasing infection-related interventions and hospital stays reduces overall healthcare expenditures.

Incorporating this protocol into clinical practice represents an evidence-based, cost-effective approach that strengthens infection control and optimizes patient care. Nurses play a pivotal role in consistently applying such standardized practices to ensure high-quality outcomes, particularly in patients at elevated risk for infection.

NR 585 Week 3 Research Article Appraisal

References

Frontera, J. A., Wang, E., Phillips, M., Radford, M., Sterling, S., Delorenzo, K., Saxena, A., Yaghi, S., Zhou, T., Kahn, D. E., Lord, A. S., & Weisstuch, J. (2021). Protocolized urine sampling is associated with reduced catheter-associated urinary tract infections: A pre-and postintervention study. Clinical Infectious Diseases, 73(9), e2690–e2696. https://doi.org/10.1093/cid/ciaa1152