NR 585 Week 3 Research Article Appraisal
Student Name
Chamberlain University
NR-585: Research Methods and Evidence-Based Practice for Advanced Nursing Practice
Prof. Name
Date
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 study aimed to evaluate whether the manner and timing of urine collection in patients with indwelling catheters affected the rate of false-positive urinalysis (UA) results. The researchers specifically examined whether the introduction of a standardized urine sampling protocol would lower the risk of misdiagnosing catheter-associated urinary tract infections (CAUTIs). By focusing on the reduction of diagnostic errors, the study sought to improve infection control practices and optimize patient care outcomes.
Study Design
A pre- and post-intervention approach was employed, spanning 18 months across two hospitals. The study was divided into two consecutive 9-month periods, allowing researchers to compare outcomes from traditional urine sampling against those obtained after introducing the structured protocol. This design provided a reliable before-and-after comparison to assess the protocol’s effectiveness.
Describe the Study
Research Question or Hypothesis
Research Question:
Does the implementation of a standardized urine sampling protocol decrease the rate of false-positive CAUTI diagnoses and infection rates in patients with indwelling urinary catheters?
Hypothesis:
The researchers hypothesized that using protocolized urine sampling would reduce the likelihood of identifying colonization as infection. Consequently, this would lead to fewer CAUTI cases being reported and improved patient outcomes.
Study Aims
- Main Aim: To determine whether a structured urine collection method reduces CAUTI incidence and the duration of catheter use in patients with elevated infection risks.
- Secondary Aim: To compare the outcomes between the intervention hospital (which used the standardized protocol) and the control hospital (which continued with conventional practices).
Sampling Technique, Sample Size, and Characteristics
Both hospitals adhered to the Centers for Disease Control and Prevention (CDC) recommendations for CAUTI prevention. These measures included minimizing unnecessary catheter placement, applying sterile techniques during insertion, and maintaining catheters appropriately.
The urine specimens in the intervention group were obtained through sterile aspiration from a disinfected needleless port. This method followed CDC guidelines and ensured standardization in practice.
Table 1. Sample Characteristics
| Category | Description |
|---|---|
| Sampling Method | Protocolized urine collection via sterile aspiration from disinfected port |
| Sample Size | Data collected from two hospitals (combined bed capacity of 1,100) |
| Inclusion Criteria | Adult patients (>18 years) in ICU, medical, surgical, or neurology units |
| Exclusion Criteria | Pediatric patients and patients in specialty service units |
| Duration | 18 months (9 months pre-intervention, 9 months post-intervention) |
Major Variables Studied
Independent Variable
The independent variable was the introduction of the urine sampling protocol. One hospital (test site) implemented the structured procedure, while the other (control site) continued with routine urine collection.
Dependent Variables
- Primary Outcome: The rate of catheter-associated urinary tract infections (CAUTIs).
- Secondary Outcome: The number of urinary catheter days among patients in the study.
Table 2. Variables of the Study
| Variable Type | Description |
|---|---|
| Independent Variable | Implementation of protocolized urine sampling at intervention hospital |
| Dependent Variables | CAUTI infection rates; urinary catheter days |
Explain Why and How You Can Use the Study Results in Practice
The study’s findings hold significant relevance for clinical nursing practice. By standardizing urine collection methods, healthcare teams can effectively reduce CAUTI rates, which remain one of the most common hospital-acquired infections. The results demonstrate that traditional sampling often leads to colonization being mistaken for infection, resulting in overuse of antibiotics and unnecessary treatment interventions.
Integrating this protocol into daily practice would provide several benefits:
- Improved Patient Safety: Reducing infection risk directly enhances patient well-being and lowers complication rates.
- Shorter Hospital Stays: Fewer CAUTI cases translate to decreased recovery time and earlier discharges.
- Antibiotic Stewardship: Proper diagnosis minimizes inappropriate antibiotic use, helping prevent resistance.
- Cost Reduction: Avoiding prolonged hospitalizations and unnecessary treatments lowers the financial burden on healthcare systems.
Ultimately, this protocol represents an evidence-based, cost-effective intervention that can improve patient care quality. Nurses, as frontline providers, play a critical role in ensuring the consistent application of such practices to enhance outcomes in high-risk patient populations.