Overview

Evidence-based practice (EBP) integrates the best available research evidence with clinical expertise and client preferences — research alone is necessary but not sufficient. Quality improvement (QI) differs in purpose: it uses rapid-cycle methods like Plan-Do-Study-Act (PDSA) to improve a specific local process, while research generates new generalizable knowledge. Both require measurable outcomes.

Interpretation

Evidence hierarchy — rank sources from strongest (top) to weakest (bottom) when justifying a practice change.

Technique

EBP implementation sequence: ask a focused PICO question, then move through the cycle. QI work runs on the parallel PDSA loop shown below.

PDSA quality-improvement cycle

PlanIdentify the problem, set an aim, plan the change
DoPilot the change on a small scale
StudyCompare outcome data against baseline
ActAdopt, adapt, or abandon — then repeat the cycle

During — Monitoring

Measure baseline before change

Improvement cannot be quantified without a starting point

Compare post-change data to baseline

The Study phase — objective outcome data, not staff satisfaction

Use objective outcome data

Satisfaction surveys do not prove the intervention worked

Patient Teaching

QI does not require IRB approval

Local process improvement using existing data

Research requires IRB approval

Generates new generalizable knowledge

EBP applies existing published evidence

No new data collection, so no IRB needed

Challenge tradition-based practice

"We've always done it this way" is the enemy of EBP

Report Nowescalate immediately

Sentinel event

Triggers root-cause analysis and a process change, not individual blame

Recurring safety trend

Pattern signals a system flaw — escalate for root-cause analysis

Clinical Pearl

Plan-Do-Study-Act drives QI; EBP blends best evidence + clinical expertise + patient values — and the strongest evidence is the systematic review, never expert opinion.

Quality Improvement & Evidence-Based Practice

Overview

Interpretation

Technique

During — Monitoring

Patient Teaching

A nurse finds a new wound care dressing in a journal article and wants the unit to adopt it. Enthusiasm isn't enough — there's a structured process that separates opinion from evidence, and NCLEX tests whether you know the difference.

Key Distinctions

Clinical Pearl

Ready to practice this topic?