Use of fractional flow reserve versus stress perfusion scintigraphy in stent restenosis.

Background: Fractional flow reserve (FFR) is a valid surrogate for hemodynamic significance in stenotic native coronary arteries. The aim of this study was to examine the value of FFR compared to stress perfusion myocardial scintigraphy (SPMS) in patients with coronary stent restenosis.

Methods: We studied 42 patients, aged 62+/-10 years, with stent restenosis 5.

Clinical significance of fractional flow reserve for evaluation of functional lesion severity in stent restenosis and native coronary arteries.

Objective: Fractional flow reserve (FFR) is a valid surrogate for hemodynamic significance in stenotic native coronary arteries, but its validity in patients with coronary stent restenosis is unknown.

Design: Prospective.

Setting: University hospital.