Functional classification discordance in intermediate coronary stenoses between fractional flow reserve and angiography-based quantitative flow ratio
نویسندگان
چکیده
منابع مشابه
Visual-functional mismatch between coronary angiography and fractional flow reserve.
OBJECTIVES The goal of this study was to identify clinical and lesion-specific local factors affecting visual-functional mismatch. BACKGROUND Although lesion severity determined by coronary angiography has not been well correlated with physiological significance, the mechanism of the discordance remains poorly understood. METHODS The authors assessed quantitative coronary angiography, intra...
متن کاملPhysiological basis and long-term clinical outcome of discordance between fractional flow reserve and coronary flow velocity reserve in coronary stenoses of intermediate severity.
BACKGROUND Discordance between fractional flow reserve (FFR) and coronary flow velocity reserve (CFVR) may reflect important coronary pathophysiology but usually remains unnoticed in clinical practice. We evaluated the physiological basis and clinical outcome associated with FFR/CFVR discordance. METHODS AND RESULTS We studied 157 intermediate coronary stenoses in 157 patients, evaluated by F...
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BACKGROUND Coronary blood flow occurs mainly during the diastolic phase of each cardiac cycle and is mainly dependent on diastolic driving pressure, especially in the left anterior descending coronary artery (LAD). We hypothesized that calculation of the ratio of the diastolic driving pressure of a stenotic LAD to its normal value, namely diastolic FFR (d-FFR), might provide precise insight int...
متن کاملThree Dimensional Quantitative Coronary Angiography Can Detect Reliably Ischemic Coronary Lesions Based on Fractional Flow Reserve
Conventional coronary angiography (CAG) has limitations in evaluating lesions producing ischemia. Three dimensional quantitative coronary angiography (3D-QCA) shows reconstructed images of CAG using computer based algorithm, the Cardio-op B system (Paieon Medical, Rosh Ha'ayin, Israel). The aim of this study was to evaluate whether 3D-QCA can reliably predict ischemia assessed by myocardial fra...
متن کاملSignificance of Microvascular Function in Visual—Functional Mismatch Between Invasive Coronary Angiography and Fractional Flow Reserve
BACKGROUND Despite a moderate correlation between angiographical stenosis and physiological significance, the mechanism of discordance has not been fully elucidated, particularly regarding the significance of microvascular function. This study sought to clarify whether microvascular function affects visual-functional mismatch between quantitative coronary angiography (QCA) and fractional flow r...
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ژورنال
عنوان ژورنال: Open Heart
سال: 2020
ISSN: 2053-3624
DOI: 10.1136/openhrt-2019-001179