Abstract:BackgroundThe Index of Microcirculatory Resistance (IMR) can identify Coronary Microcirculatory Dysfunction (CMD), but its pathophysiological effects are uncertain. We characterised relations between IMR and downstream myocardial perfusion and LV function.Methods60 patients with stable coronary disease (67±8 years, 72% male) had adenosine stress Cardiac MRI to assess myocardial perfusion reserve (MPR), systolic and diastolic function (LV strain). All patients had invasive angiography and Fractional Flow Reserv… Show more
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