Abstract
The Age of Non-Invasive Measurements: Echocardiographic Equations Methods to Determine Variables in the Pulmonary Vascular Reactivity Test
Highlights
Introduction and objectivesRight Heart Catheterization (RHC) is a gold method to perform the Pulmonary Vascular Reactivity Test (PVRT), echocardiography has proven effective in estimating different hemodynamic variables
The Pulmonary Vascular Resistance Value (PVR) is directly related to the Pressure Gradient (∆P) and inversely with cardiac output (CO), according to this author; its equivalents echocardiographic would be represented by the Tricuspid Regurgitation Maximum Velocity (TRV) as a measure of pressure gradient and TVI as a Cardiac flow measurement
In this work we conclude: 1. The algorithm of equations proposed by Abbas to determine PVR according to the relationship TRV/TVIrvot is ≥ 0275 is useful and easy to estimate [2]
Summary
Right Heart Catheterization (RHC) is a gold method to perform the Pulmonary Vascular Reactivity Test (PVRT), echocardiography has proven effective in estimating different hemodynamic variables. This study to demonstrate that with the Doppler echocardiographic index: Tricuspid Regurgitation Maximum Velocity (TRV)/Time-Velocity Integral of the Right Ventricle Outflow Tract (TVIrvot) we will obtain a Pulmonary Vascular Resistance Value (PVR) comparable to the invasive method. There aren’t reports of studies comparing in the PVRT simultaneous measurements of PVR and MPAP with the invasive method and the Echocardiography Doppler. In this investigation we raised 3 objectives: 1) Revalidate Abbas’s equation in a group of patients [20] with indication of Right Heart Catheterization (RHC) diagnosis. In this investigation we raised 3 objectives: 1) Revalidate Abbas’s equation in a group of patients [20] with indication of Right Heart Catheterization (RHC) diagnosis. 2) Compare the invasive and non-invasive measurements of MPAP and PVR in a group of patients who underwent the PVRT and verify the effectiveness of the echocardiographic measurements. 3) Demonstrate in this group of patients the utility and efficiency of a novel Echocardiographic equation to calculate the PVR when compared with the Abbas’s equation [10] and the RHC
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