Influence of Percutaneous Coronary Intervention on Coronary Microvascular Resistance Index

Abstract

PCI-induced restoration of P(d) resulted in a reduction of h-MR(v) in accordance with the pressure dependence of h-MR(v). The decrease in h-MR(v) to a level below that of the corresponding reference vessel in the immediate post-PCI period and a lowered baseline MR(v) suggest microvascular remodeling induced by long-term exposure to a low-pressure environment.