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Fractional flow reserve (FFR), the hyperemic ratio of distal (Pd) to proximal (Pa) coronary pressure, is used to identify the need for coronary revascularization. Changes in left ventricular end-diastolic pressure (LVEDP) might affect measurements of FFR.
Medical University of South Carolina, Charleston, SC, USA.
This article was published in the following journal.
Name: Cardiovascular revascularization medicine : including molecular interventions
Coronary slow flow (CSF) is associated with an increased incidence of adverse cardiovascular events. Previous studies have shown increases in P wave dispersion, QT dispersion, and the Tp-e/QT ratio, a...
Preeclampsia (PE) is associated with acute left ventricular dysfunction. Whether these changes eventually resolve remains unclear. This study assessed left and right ventricular structure and function...
Accurate Quantification Methods for Aortic Insufficiency Severity in Patients With Left Ventricular Assist Devices: Role of Diastolic Flow Acceleration and Systolic-to-Diastolic Peak Velocity Ratio of LVAD Outflow Cannula.
The aim of this study was to develop a technique to measure regurgitant flow throughout the entire cardiac cycle that would more accurately measure aortic insufficiency (AI) severity in patients with ...
Several studies have demonstrated that left ventricular diastolic dysfunction (LVDD) and left atrial pressure (LAP), as a surrogate marker of LVDD, were associated with atrial fibrillation (AF) recurr...
Cardiac ultrasonography has become an indispensible tool in the management of hemodynamically unstable critically ill patients. Some consider it as the modern stethoscope. Echocardiography is non-inva...
Impairment of relaxation, the early phase of ventricular diastole is the first stage of heart diastolic dysfunction. Left ventricular diastolic function can be determined noninvasively by...
The anthypertensive treatment with Losartan may have benefits beyond blood pressure reduction on myocardial structure and function in hypertensive diabetic patients. We will evaluate the e...
Anaesthetics may impair the diastolic function of the heart, but the importance of this finding for patients has not been sufficiently examined. Specially the effects on diastolic function...
This study will assess the differences between Fractional Flow Reserve (FFR) measurements made by the Navvus catheter and a commercially available pressure guidewire in up to 240 subjects ...
Aim Primary percutaneous coronary intervention efficacy improvement by DIVER CE thrombectomy system leading to thrombus reduction. Study design: Multicenter, prospective, opened, r...
Placement of a balloon-tipped catheter into the pulmonary artery through the antecubital, subclavian, and sometimes the femoral vein. It is used to measure pulmonary artery pressure and pulmonary artery wedge pressure which reflects left atrial pressure and left ventricular end-diastolic pressure. The catheter is threaded into the right atrium, the balloon is inflated and the catheter follows the blood flow through the tricuspid valve into the right ventricle and out into the pulmonary artery.
Enlargement of the LEFT VENTRICLE of the heart. This increase in ventricular mass is attributed to sustained abnormal pressure or volume loads and is a contributor to cardiovascular morbidity and mortality.
The pressure within a CARDIAC VENTRICLE. Ventricular pressure waveforms can be measured in the beating heart by catheterization or estimated using imaging techniques (e.g., DOPPLER ECHOCARDIOGRAPHY). The information is useful in evaluating the function of the MYOCARDIUM; CARDIAC VALVES; and PERICARDIUM, particularly with simultaneous measurement of other (e.g., aortic or atrial) pressures.
Counterpulsation in which a pumping unit synchronized with the patient's electrocardiogram rapidly fills a balloon in the aorta with helium or carbon dioxide in early diastole and evacuates the balloon at the onset of systole. As the balloon inflates, it raises aortic diastolic pressure, and as it deflates, it lowers aortic systolic pressure. The result is a decrease in left ventricular work and increased myocardial and peripheral perfusion.
The ratio of maximum blood flow to the MYOCARDIUM with CORONARY STENOSIS present, to the maximum equivalent blood flow without stenosis. The measurement is commonly used to verify borderline stenosis of CORONARY ARTERIES.