There was a trend toward lower risk of contrast-induced nephropathy (OR, 0.7; 95% CI, 0.4-1.0) in the fasting arm across 4 studies with available data, but it did not reach statistical significance ( P = .06).
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Re-evaluating Fasting Guidelines for Invasive Cardiac Procedures: A Systematic Review and Meta-analysis of Randomized Clinical Trials.
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