
In coronary lesions, discordance between fractional flow reserve (FFR) and nonhyperemic pressure ratios (NHPR) leads to worse outcomes when revascularization is deferred. In a study of 4304 lesions, 20% showed discordance (FFR+/NHPR−: 11.2%, FFR−/NHPR+: 8.8%). Deferred treatment in discordant lesions resulted in higher 1-year target vessel failure rates (FFR+/NHPR−: 7.9%, FFR−/NHPR+: 5.5%). Only FFR+/NHPR− lesions benefited from revascularization, emphasizing the superiority of FFR-guided strategies.
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