Innovative Methodology Measurement of total pulmonary arterial compliance using invasive pressure monitoring and MR flow quantification during MR-guided cardiac catheterization
نویسندگان
چکیده
Vivek Muthurangu, David Atkinson, Maxime Sermesant, Marc E. Miquel, Sanjeet Hegde, Robert Johnson, Rado Andriantsimiavona, Andrew M. Taylor, Edward Baker, Robert Tulloh, Derek Hill, and Reza S. Razavi Cardiac MR Research Group, Division of Imaging Sciences, King’s College London; Department of Congenital Heart Disease, Guy’s Hospital; and Cardiothoracic Unit, Institute of Child Health and Great Ormond Street Hospital, London, United Kingdom
منابع مشابه
Measurement of total pulmonary arterial compliance using invasive pressure monitoring and MR flow quantification during MR-guided cardiac catheterization.
Pulmonary hypertensive disease is assessed by quantification of pulmonary vascular resistance. Pulmonary total arterial compliance is also an indicator of pulmonary hypertensive disease. However, because of difficulties in measuring compliance, it is rarely used. We describe a method of measuring pulmonary arterial compliance utilizing magnetic resonance (MR) flow data and invasive pressure mea...
متن کاملMR phase-contrast imaging in pulmonary hypertension
Pulmonary hypertension (PH) is a life-threatening, multifactorial pathophysiological haemodynamic condition, diagnosed when the mean pulmonary arterial pressure equals or exceeds 25 mmHg at rest during right heart catheterization. Cardiac MRI, in general, and MR phase-contrast (PC) imaging, in particular, have emerged as potential techniques for the standardized assessment of cardiovascular fun...
متن کاملMagnetic resonance--guided cardiac catheterization in a swine model of atrial septal defect.
BACKGROUND Radiation exposure during cardiac catheterization, limited image planes, and poor soft tissue definition are disadvantages of x-ray fluoroscopy that could be overcome with the use of MRI. This study evaluates the feasibility of real-time MRI (MR fluoroscopy) to guide left and right heart catheterization. METHODS AND RESULTS Anesthetized pigs (n=7) with defects of the atrial septum ...
متن کاملA System for Continuous Estimating and Monitoring Cardiac Output via Arterial Waveform Analysis
Background: Cardiac output (CO) is the total volume of blood pumped by the heart per minute and is a function of heart rate and stroke volume. CO is one of the most important parameters for monitoring cardiac function, estimating global oxygen delivery and understanding the causes of high blood pressure. Hence, measuring CO has always been a matter of interest to researchers and clinicians. Sev...
متن کاملPulmonary arterial compliance: How and why should we measure it?
The pulmonary circulation is a high-flow/low-pressure system, coupled with a flow generator chamber-the right ventricle-, which is relatively unable to tolerate increases in afterload. A right heart catheterization, using a fluid-filled, balloon-tipped Swan-Ganz catheter allows the measurement of all hemodynamic parameters characterizing the pulmonary circulation: the inflow pressure, an accept...
متن کامل