Bedside Assessment of Tissue Oxygen Saturation Monitoring in Critically Ill Adults: An Integrative Review of the Literature
Table 1
AACN’s new evidence-leveling system.
Level
A Meta-analysis of multiple controlled studies or metasynthesis of qualitative studies with results that consistently support a specific action, intervention, or treatment.
B Well-designed controlled studies, both randomized and nonrandomized, with results that consistently support a specific action, intervention, or treatment.
C Qualitative studies, descriptive or correlational studies, integrative reviews, systematic reviews, or randomized controlled trials with inconsistent results.
D Peer-reviewed professional organizational standards, with clinical studies to support recommendations.
E Theory-based evidence from expert opinion or multiple case reports.
