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Tissue Doppler Imaging study (at the level of basal segment of septal interventricular wall) in apical four‐ chamber view of transmitral inflow in a patient with paroxysmal atrial fibrillation during sinus rhythm. Sa represents systolic myocardial velocity of left ventricle; Ea represents early diastolic filling myocardial velocity of left ventricle; Aa represents late diastolic filling myocardial velocity of left ventricle.
Source publication
Atrial fibrillation (AF) is most common sustained arrhythmia in clinical practice. The new treatment standard in paroxysmal and persistent AF is the catheter ablation. Echocardiography plays a key role in risk stratification and management of patients with AF and is critical in the assessment of candidates for AF ablation, providing both anatomic a...
Context in source publication
Context 1
... echocardiographic techniques, such as Tissue Doppler Imaging (TDI) and speckle tracking (strain and strain rate) imaging, allow noninvasive measurement of regional function of the myocardium (including LA). TDI allows the quantification of the low-velocity, high- amplitude, long-axis intrinsic myocardial velocities in both systole and diastole, and provides a relatively load-independent measure of both left ventricle systolic and diastolic function (Figure 2). ...
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Citations
... Atrial fibrillation (AF) is one of the most commonly sustained arrhythmias and an important cause of morbidity, mortality, and health care expenditure. 1,2 Currently there are 2.3 million people in the US who have AF and this is expected to rise to 5.6 million by 2050. In persons aged 60-65, the prevalence is around 1%, but in those > 80 years of age, the prevalence is 8-10%. ...
Atrial fibrillation (AF) is the most common cardiac arrhythmia, with an increasing prevalence and an enormous clinical impact due to the high stroke rate, left ventricular dysfunction and excess mortality. The occurrence and maintenance of AF is favored by both the degree of left atrial (LA) dilation and the association of fibrotic lesions of the myocardium. The LA is a marker of adverse cardiovascular events in patients with AF. Atrial remodeling can be electrical (shortening atrial refractory), structural (altering geometry and altering collagen content) and contractile (loss of contractility). Cardiac imaging plays a central role in the clinical management of this arrhythmia. Echocardiography represents the routine imaging technique used in patients with AF, with a role in detecting LA dysfunction and cardiac structural changes that predispose to this arrhythmia, also having the ability to predict the maintenance of sinus rhythm after cardioversion and after ablation.
