Background: The cornerstone of high-quality, patient-centered care is the use of evidence-based solutions. Researches that examine how evidence-based nursing is applied are crucial to quality improvement. The purpose of the study is to examine how evidence-based practice is used by nurses who provide intense and critical care.

Methods: This study was conducted in 2020 at the intensive care units (ICU) departments of the selected tertiary hospitals gudur. This poll had 202 critical care nurses participate (response rate: 94.3%). questionnaire used in the research, which was anonymous. Implementing evidence-based nursing practice among nurses working in intensive care units is the study's research topic. McEvoy et al. (2010) created a questionnaire as a research tool. With the aid of MS Excel 2016 and SPSS 24.0, statistical analysis was carried out. Our sample was analyzed using descriptive statistics, which were then reported as percentages. Quantitative information is shown as mean and standard deviation (mSD). A p-value of 0.05 or below was regarded as statistically significant among the exploratory groups.

Results: When compared to nurses with professional or higher non-university education, nurses with higher university education claim to know evidence-based nursing language better with a statistical significance (p= 0.001) and to have stronger self-confidence in using evidence (p= 0.001). The use of evidence-based nursing has been found to be directly correlated with age, with younger nurses having statistically significantly greater knowledge (p=0.001), skills (p=0.012), self-confidence when applying evidence (p=0.001), and a more positive attitude towards the practice (p=0.041) than their older counterparts. The knowledge of terminology used in evidence-based practice is statistically substantially lower among nurses with work experience of more than 20 years than among those with work experience of 10 years or less (p=0.001). According to research, Intense and Critical. It has been determined that Intensive and Critical Care Nurses (ICU Nurses) with 10 years or less experience under their belt know the terms related to evidence-based nursing statistically significantly better (p= 0.001) and applies evidence-based knowledge in clinical practice more often, compared to nurses who have worked in the ICU for longer, e.g., 11-20 years or more than 20 years (p= 0.006). When using an evidence-based approach in clinical practice, nurses who have worked in the ICU for more than 20 years statistically have greater difficulties than those who have worked there for 11–20 years, 10–19 years, or less (p=0.017).

Conclusion: Younger nurses with higher education and less general work experience tend to have more knowledge and a more positive approach to evidence-based nursing. Nurses with more than 20 years of experience working in the ICU are more likely to experience issues with an evidence-based approach in clinical practice. Most of the nurses who participated in the study claimed that the lack of time was one of the key problems when practicing evidence-based nursing.