This essay presents a detailed research critique of two qualitative studies focusing on the impact of nurse staffing levels and nurse-to-patient ratios on healthcare quality and patient outcomes. The first article, a systematic review and meta-analysis, examines the relationship between nurse staffing levels and patient outcomes in acute care settings, highlighting that higher staffing levels are associated with reduced mortality rates. The second article investigates the correlation between changes in nursing staff and medication errors, finding that increased staffing is linked to fewer errors. Both studies support the importance of adequate nurse staffing to improve patient care, reduce medication errors, and enhance overall healthcare delivery, particularly for elderly patients. Ethical considerations, such as obtaining informed consent and maintaining patient privacy, are also discussed. The critique concludes that maintaining optimal nurse-to-patient ratios is crucial for delivering high-quality care and minimizing adverse patient outcomes.