Angiography-Derived Versus Coronary Guidewire-Derived Index of Microcirculatory Resistance in Patients With Ischemia With Nonobstructive Coronary Arteries.

ABSTRACT:

Background

Coronary function testing (CFT) during invasive coronary angiography is guideline-recommended to identify coronary microvascular dysfunction (CMD) in patients with ischemia with nonobstructive coronary arteries (INOCA). Wire-free, angiography-derived index of microcirculatory resistance (IMR_angio) measurements have been developed to simplify assessment for CMD. We assessed the validity of IMR_angio compared with the conventional index of microcirculatory resistance (IMR) in a cohort of individuals with INOCA.

Methods

This single-center observational study prospectively enrolled adults aged >18 years who were referred for clinically indicated invasive coronary angiography for the evaluation of chest discomfort or an anginal equivalent and had n

SUBMITTER: Loftspring E 

PROVIDER: S-EPMC12664622 | biostudies-literature | 2025 Nov

REPOSITORIES: biostudies-literature