The Role Of Nursing Practice In Reducing Mortality, Morbidity, And Adverse Events: A Systematic Review

Abstract

Background: Nursing practice plays a central role in patient monitoring, early detection of clinical deterioration, and implementation of evidence-based interventions. Increasing evidence suggests that nurse staffing levels, education, clinical competencies, and leadership influence patient safety outcomes.

Objective: To systematically synthesize evidence examining the impact of nursing practice on mortality, morbidity, and adverse events across healthcare settings.

Methods: A systematic review was conducted following PRISMA 2020 guidelines. Electronic databases (PubMed, CINAHL, Scopus, Web of Science) were searched for studies published from 2015 onward. Studies assessing associations between nursing practice variables and patient outcomes (mortality, complications, adverse events) were included. Quality appraisal was conducted using the Joanna Briggs Institute (JBI) tools.

Results: Evidence consistently demonstrated that higher nurse staffing ratios, advanced education levels (e.g., BSN or higher), nurse-led early warning systems, and proactive clinical surveillance significantly reduced in-hospital mortality, infection rates, pressure injuries, and medication errors.

Conclusion: Optimizing nursing practice is a high-impact, evidence-based strategy for improving patient survival and reducing preventable harm. Policymakers and healthcare leaders should prioritize nurse staffing adequacy, clinical training, and supportive practice environments.