Electrical cardiometry: ICON (contractility index) and detection of left ventricular failure
نویسندگان
چکیده
منابع مشابه
Augmentation index, left ventricular contractility, and wave reflection.
Augmentation index (AIx), a correlate of mortality, is thought to be influenced by left ventricular contractility and wave reflections. However, the relationship of AIx with left ventricular contractility changes has never been assessed, and the wave reflection theory has recently been questioned. This study sought to examine arterial waveform changes in response to reduced "wave reflection" an...
متن کاملLeft Ventricular Contractility Indices
CONTENTS 3.1 Scope ............................................................................................................. 68 3.2 Left Ventricular Shape Factor Based Contractility Index .................... 68 3.2.1 LV Model Geometry Development ............................................. 69 3.2.2 Determination of LV Model Wall Stress..................................... 70 3.2.3 Normal...
متن کاملTherapy with cardiac contractility modulation electrical signals improves left ventricular function and remodeling in dogs with chronic heart failure.
OBJECTIVES This study examined the effects of long-term delivery of cardiac contractility modulation (CCM) electric signals on left ventricular (LV) function and global, cellular, and molecular remodeling in dogs with chronic heart failure (HF). BACKGROUND Acute studies in dogs with experimentally induced HF showed that CCM signals applied to the failing myocardium during the absolute refract...
متن کاملValidation of a novel noninvasive cardiac index of left ventricular contractility in patients.
Although there are several excellent indexes of myocardial contractility, they require accurate measurement of pressure via left ventricular (LV) catheterization. Here we validate a novel noninvasive contractility index that is dependent only on lumen and wall volume of the LV chamber in patients with normal and compromised LV ejection fraction (LVEF). By analysis of the myocardial chamber as a...
متن کاملDoppler-derived myocardial systolic strain rate is a strong index of left ventricular contractility.
BACKGROUND Myocardial fiber strain is directly related to left ventricular (LV) contractility. Strain rate can be estimated as the spatial derivative of velocities (dV/ds) obtained by tissue Doppler echocardiography (TDE). The purposes of the study were (1) to determine whether TDE-derived strain rate may be used as a noninvasive, quantitative index of contractility and (2) to compare the relat...
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ژورنال
عنوان ژورنال: Archives of Cardiovascular Diseases Supplements
سال: 2020
ISSN: 1878-6480
DOI: 10.1016/j.acvdsp.2019.09.354