Which Compression-to-Ventilation Ratio Yields Better Cardiac Arrest Outcomes?

The authors screened 5,703 titles and abstracts and reviewed 229 full-text articles. They included 28 studies and 13 companion reports based on eligibility criteria, with study sizes ranging from 181 to 350,439 patients. Of the 28 included studies, there was one cluster-crossover randomized controlled trial, 3 randomized controlled trials, and 24 cohort trials. Twenty-seven studies investigated out-of-hospital cardiac arrest and 20 studies were limited to adults.

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