Nursing Research, Evidence-Based Practice, and Performance Improvement

Fundamentals of Evidence-Based Practice

• Definition: Evidence-Based Practice (EBP) is a problem-solving approach to clinical practice that integrates the systematic use of best evidence, clinical expertise, patient preferences and values, and available health care resources.
• Professional Standards:
  • The American Nurses Association (ANA) Scope and Standards of Practice (2021) Standard $14$ states that the registered nurse integrates scholarship, evidence, and research findings into practice.
  • Quality and Safety Education for Nurses (QSEN) establishes EBP as a core competency required for pre-licensure and graduate nursing education.
  • Melnyk and colleagues established $12$ EBP competencies for registered nurses (RNs) and $11$ additional competencies for advanced practice nurses (APNs).
• Health Care Quality and Financial Impact:
  • Conditions monitored as Hospital-Acquired Conditions (HACs), such as Central Line-Associated Bloodstream Infections (CLABSIs), affect quality ratings and lead to reduced hospital reimbursement from Medicare and other payers under Centers for Medicare and Medicaid Services (CMS) regulations.

Steps of Evidence-Based Practice

• Step 0: Cultivate a Spirit of Inquiry: Maintain a continuous questioning mindset within an agency culture that supports tools, EBP mentors, and governance infrastructure.
• Step 1: Ask a Clinical Question in PICO Format:
  • $P$: Patient population of interest.
  • $I$: Intervention or area of interest.
  • $C$: Comparison intervention or current standard of care.
  • $O$: Outcome desired (non-directional phrasing is preferred).
  • $T$: Time required to achieve the outcome.
• Step 2: Search for the Best Evidence:
  • Key databases include MEDLINE, CINAHL, PubMed, Cochrane Database of Systematic Reviews, Embase, PsycINFO, and AHRQ.
• Step 3: Critically Appraise the Evidence:
  • Hierarchy of Evidence:
  • $Level\,I$: Systematic reviews or meta-analyses of randomized controlled trials (RCTs) and evidence-based clinical practice guidelines based on systematic reviews.
  • $Level\,II$: Well-designed RCTs.
  • $Level\,III$: Controlled trials without randomization (quasi-experimental studies).
  • $Level\,IV$: Single non-experimental studies (correlational, cohort studies).
  • $Level\,V$: Systematic reviews of descriptive and qualitative studies.
  • $Level\,VI$: Single descriptive or qualitative studies.
  • $Level\,VII$: Opinions of authorities or reports of expert committees.
  • Article Analysis: Evaluate statistical significance using probability values ($p < 0.05$ indicates less than $5\%$ probability that results occurred by chance).
• Step 4: Integrate the Evidence: Combine best evidence with clinical expertise and patient values; utilize pilot studies ($3$-month trials) and update Policies and Procedures (P&Ps).
• Step 5: Evaluate the Outcomes: Assess the effectiveness of practice changes over specified timeframes (e.g., $3$ to $6$ months).
• Step 6: Communicate the Outcomes: Disseminate findings via unit huddles, Gemba boards, poster presentations, clinical grand rounds, and conferences.

Scientific Method and Nursing Research

• Scientific Method Steps:
  • $1$. Make an observation.
  • $2$. Ask questions and gather information.
  • $3$. Analyze literature and form a research question or hypothesis.
  • $4$. Conduct a study using scientific rigor.
  • $5$. Analyze data and draw conclusions.
• Nursing Process vs. Scientific Method:
  • Assessment: Observe/ask questions and identify clinical problem.
  • Diagnosis: Develop research questions or hypotheses.
  • Planning: Select research design, sample, variables, and data collection methods.
  • Implementation: Conduct the study and collect data.
  • Evaluation: Analyze data, interpret results, and disseminate findings.
• Quantitative Research Methods:
  • Experimental (RCT): Tests interventions against standard care using random assignment to control or treatment groups.
  • Non-Experimental/Descriptive: Describes or predicts phenomena (e.g., case-control studies, correlational studies).
  • Surveys: Gathers data on practices, opinions, and characteristics across larger samples.
  • Evaluation Research: Measures how well a program, practice, or policy functions.
• Qualitative Research Methods:
  • Examines non-numeric, subjective experiences using inductive reasoning.
  • Approaches include Ethnography, Phenomenology, and Grounded Theory.
• Specialized Research Areas:
  • National Institute of Nursing Research (NINR): Supports research in symptom science, wellness, self-management of chronic conditions, and end-of-life/palliative care.
  • Translational Research: Tests implementation strategies in real-world settings across $5$ phases (Preclinical to Population-level outcome research).
  • Outcomes Research: Focuses on patient-centered effects, health care costs, and nurse-sensitive indicators (e.g., blood glucose ranges, pressure injuries).
• Ethics in Nursing Research:
  • Institutional Review Board (IRB) approval is mandatory before human subject testing.
  • Informed consent requires voluntary participation, full understanding, and guaranteed confidentiality or anonymity.

Performance Improvement

• Definition: A continuous formal approach for analyzing local health care processes and systems without intending to generate generalizable knowledge.
• Performance Improvement Models:
  • Balanced Scorecard: Multidimensional framework linking strategy across organizational perspectives.
  • Root Cause Analysis (RCA): Structured method used after sentinel events to analyze active and latent errors.
  • Six Sigma: Data-driven methodology used to eliminate process variations.
  • Plan-Do-Study-Act (PDSA): Four-step experiential learning cycle for testing process modifications.
• Just Culture: An organizational culture that values error reporting, critical thinking, and process improvement over individual blame.

Comparison of EBP, Research, and Performance Improvement

• Purpose:
  • EBP: Uses best evidence, expertise, and patient preferences to determine safe, effective nursing interventions.
  • Research: Systematic inquiry that generates new generalizable knowledge.
  • PI: Improves local work processes and health system efficiency.
• IRB Requirement:
  • EBP: Sometimes required.
  • Research: Always required.
  • PI: Sometimes required.

Questions and Discussion

• Question 1: Matching PICO components for "Does the use of guided imagery compared with standard care affect postoperative pain in hospitalized adolescents?"
  • Patient/Population: Hospitalized adolescents.
  • Intervention: Guided imagery.
  • Comparison: Adolescents receiving standard care.
  • Outcome: Postoperative pain.
• Question 2: What is the correct sequence of EBP steps?
  • Answer: Step $0$ (Cultivate inquiry) $\rightarrow$ Step $1$ (Ask PICO question) $\rightarrow$ Step $2$ (Search evidence) $\rightarrow$ Step $3$ (Critically appraise) $\rightarrow$ Step $4$ (Integrate evidence) $\rightarrow$ Step $5$ (Evaluate outcomes) $\rightarrow$ Step $6$ (Communicate outcomes).
• Question 3: Which section of a research article describes who was studied and how data were collected?
  • Answer: The Methods section.
• Question 4: What PI model is used following a sentinel event in the ICU?
  • Answer: Root Cause Analysis (RCA).