Postprocedural Contrast Mediated FFR Plus Intracoronary Infusion of Nitroglycerin in Multivessel Patients (PROMETEUS TRIAL)

"Agreement measurements between the different post-ICP functional values (cFFR+NTG and FFR) will be performed at the end of the intervention on the treated vessels. The study protocol consists of 4 sequential steps (separated by at least 30 sec):~1. Determination of FFR with contrast and NTG: cFFR +NTG will be calculated with the lowest ratio after the infusion of 0.2 mg bolus of intracoronary NTG and pushed with contrast.~2. Determination of distal pressure between basal aortic pressure: The Pd/Pa will be obtained after about 30-60 seconds of the NTG bolus in step 1.~3. Determination of the diastolic dPR index: the average value (2-3 determinations).~4. Determination of fractional flow reserve with adenosine: The FFR will be obtained after continuous peripheral venous infusion with adenosine or with intracoronary boluses according to the protocol of each center."