Letter by Hiemann et al Regarding Article, “Assessment of Microcirculatory Remodeling With Intracoronary Flow Velocity and Pressure Measurements: Validation With Endomyocardial Sampling in Cardiac Allografts”

To the Editor:We read with interest the results reported by Escaned et al1 concerning vascular remodeling in endomyocardial biopsies and microvascular function in cardiac transplant recipients. Since we published our experience2 with microvasculopathy in 2007, we have appreciated the growing interest in that phenotype of vascular pathology after heart transplantation. However, to avoid the vague terminology concerning morphological and functional microvascular findings …