CMD was present in 35.6% of patients who underwent CFR and index of microvascular resistance/hyperemic microvascular resistance measurements and was more prevalent in the primary radial access group compared with primary femoral access (40.1% versus 34.5%), although this difference did not reach statistical significance ( P =0.06).
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Diagnostic Yield and Safety of Invasive Coronary Function Testing After Radial Versus Femoral Access.
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