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The distal coronary-to-aortic pressure ratio (P d /P a ) is a non-hyperaemic physiological index to assess the functional severity of coronary stenoses. Studies comparing P d /P a with fractional flow reserve (FFR) show superior diagnostic efficiency for myocardial ischaemia. Nevertheless, a direct comparison regarding long-term clinical outcomes is still not available. The present observational study compared the prognostic value of P d /P a and FFR for major adverse cardiac events (MACE) during a 10-year follow-up period after deferral of revascularisation.

netherlands heart journal

Prognostic implications of resting distal coronary-to-aortic pressure ratio compared with fractional flow reserve: a 10-year follow-up study after deferral of revascularisation