Observational studyEuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology2025
Coronary microvascular disease in patients referred to coronary angiography following coronary computed tomography angiography.
Observational study in EuroIntervention : journal of EuroPCR in collaboration with the Working Group on Interventional Cardiology of the European Society of Cardiology, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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10 authors.
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Abstract
backgroundIschaemia without obstructive epicardial coronary artery disease (CAD) is common and is often related to coronary microvascular disease (CMD). Previous studies primarily focused on functional assessment in patients with established ischaemia without obstructive epicardial CAD.
aimsWe sought to assess the prevalence of CMD and compare clinical and procedural characteristics including myocardial perfusion imaging, as derived from rubidium-82 positron emission tomography (
methodsWe conducted a prospective, observational study of symptomatic patients with suspected obstructive epicardial CAD on coronary computed tomography angiography. All patients were referred to
resultsAmong 561 patients, isolated CMD was diagnosed in 131 patients (prevalence 0.23, 95% confidence interval [CI]: 0.20-0.27). Vessel territories with isolated CMD were characterised by similar perfusion characteristics to non-diseased vessels (mean difference in hyperaemic myocardial blood flow 0.03 [95% CI: -0.13 to 0.06] mL/min/g). Patients with isolated epicardial disease on both patient and vessel levels had reduced stress myocardial blood flow compared to patients without disease. The probability of being angina-free at 3 months tended to be lower for the CMD group (odds ratio [OR] 0.56, 95% CI: 0.31-1.00) and higher for the revascularised epicardial disease group (OR 1.52, 95% CI: 0.94-2.48) compared to the group classified as not diseased.
conclusionsCMD, as identified with bolus thermodilution, is common in patients referred to invasive coronary angiography based on suspected obstructive epicardial CAD even in patients with normal stress myocardial blood flow by
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