TCT-473 Microvascular Resistance and Absolute Coronary Blood Flow Quantification in Takotsubo Cardiomyopathy
نویسندگان
چکیده
منابع مشابه
Effect of Elective Percutaneous Coronary Intervention on Hyperemic Absolute Coronary Blood Flow Volume and Microvascular Resistance.
BACKGROUND The hemodynamics involved in the relationship between absolute coronary blood flow (ABF) volume and myocardial resistance (MR) are complex, and the effect of percutaneous coronary intervention (PCI) on their changes remains unclear. The aim of this study was to investigate the differences in hyperemic ABF and MR before and after elective PCI using a thermodilution method. METHODS A...
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Takotsubo cardiomyopathy (TC), also called stress cardiomyopathy, apical ballooning syndrome or broken heart syndrome, is a syndrome characterized by transient regional systolic dysfunction of the left ventricle (LV), mimicking myocardial infarction (MI), but in the absence of evidence of angiographic significant obstructive coronary artery disease (CAD) or acute plaque rupture. In most cases o...
متن کاملQuantification of coronary microvascular resistance using angiographic images for volumetric blood flow measurement: in vivo validation.
Structural coronary microcirculation abnormalities are important prognostic determinants in clinical settings. However, an assessment of microvascular resistance (MR) requires a velocity wire. A first-pass distribution analysis technique to measure volumetric blood flow has been previously validated. The aim of this study was the in vivo validation of the MR measurement technique using first-pa...
متن کاملCoronary flow reserve during dobutamine stress in Takotsubo stress cardiomyopathy
OBJECTIVES Takotsubo stress cardiomyopathy (TSC) is an increasingly recognised and diagnosed disease, although the underlying pathophysiology is still unknown. Our aim was to investigate the effect of the catecholamine dobutamine on coronary flow reserve (CFR) measured non-invasively in patients with TSC and controls. Our hypothesis was that dobutamine stress can induce microvascular dysfunctio...
متن کاملAbsolute coronary blood flow measurement and microvascular resistance in ST-elevation myocardial infarction in the acute and subacute phase.
BACKGROUND/PURPOSE In a number of patients with acute myocardial infarction (AMI), myocardial hypoperfusion, known as the no-reflow phenomenon, persists after primary percutaneous intervention (PPCI). The aim of this study was to evaluate the feasibility and safety of a new quantitative method of measuring absolute blood flow and resistance within the perfusion bed of an infarct-related artery....
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ژورنال
عنوان ژورنال: Journal of the American College of Cardiology
سال: 2019
ISSN: 0735-1097
DOI: 10.1016/j.jacc.2019.08.566