AHA GUIDELINES Bundle (free trial)

Supraventricular Tachycardia

AHA GUIDELINES Apps brought to you courtesy of Guideline Central. All of these titles are available for purchase on our website, GuidelineCentral.com. Enjoy!

Issue link: http://eguideline.guidelinecentral.com/i/600060

Contents of this Issue

Navigation

Page 32 of 33

31 LEVEL (QUALITY ) OF EVIDENCE‡ LEVEL A ◼ High-quality evidence ‡ from more than 1 RCT ◼ Meta-analyses of high-quality RCTs ◼ One or more RCTs corroborated by high-quality registry studies LEVEL B-R (Randomized) ◼ Moderate-quality evidence ‡ from 1 or more RCTs ◼ Meta-analyses of moderate-quality RCTs LEVEL B-NR (Nonrandomized) ◼ Moderate-quality evidence ‡ from 1 or more well-designed, well-executed nonrandomized studies, observational studies, or registry studies ◼ Meta-analyses of such studies LEVEL C-LD (Limited Data) ◼ Randomized or nonrandomized observational or registry studies with limitations of design or execution ◼ Meta-analyses of such studies ◼ Physiological or mechanistic studies in human subjects LEVEL C-EO (Expert Opinion) Consensus of expert opinion based on clinical experience COR and LOE are determined independently (any COR may be paired with any LOE). A recommendation with LOE C does not imply that the recommendation is weak. Many important clinical questions addressed in guidelines do not lend themselves to clinical trials. Although RCTs are unavailable, there may be a very clear clinical consensus that a particular test or therapy is useful or effective. * The outcome or result of the intervention should be specified (an improved clinical outcome or increased diagnostic accuracy or incremental prognostic information). † For comparative-effectiveness recommendations (COR I and IIa; LOE A and B only), studies that support the use of comparator verbs should involve direct comparisons of the treatments or strategies being evaluated. ‡ The method of assessing quality is evolving, including the application of standardized, widely used, and preferably validated evidence grading tools; and for systematic reviews, the incorporation of an Evidence Review Committee. COR indicates Class of Recommendation; EO, expert opinion; LD, limited data; LOE, Level of Evidence; NR, nonrandomized; R, randomized; RCT, randomized controlled trial.

Articles in this issue

Archives of this issue

view archives of AHA GUIDELINES Bundle (free trial) - Supraventricular Tachycardia