Impaired left ventricular longitudinal function in asymptomatic patients with moderate-to-severe chronic aortic regurgitation: a velocity vector imaging study

WOS: 000208702503198

Clinical implications of velocity vector imaging-based two dimensional strain imaging for the evaluation of left ventricular systolic functions

WOS: 000208659600009PubMed ID: 20485243Two-dimensional (2D) echocardiography is the most common imaging modality used to assess left ventricular (LV) myocardial function. Although the studies revealed useful conclusions, there are some limitations with the conventional measurement of ejection fraction. Two dimensional (2D) strain imaging is newer echocardiographic technique which is utilized for the evaluation of quantitative regional ventricular functions. Velocity vector imaging based- 2D strain imaging is the most recent technology with a few advantages sourced by its software. This review introduces a novel 2D strain imaging technology, explains its fundamental concepts and discusses clinical applications with all the major advantages and limitations

Velocity vector imaging in assessing right ventricular subclinical dysfunction in newly diagnosed obstructive sleep apnea patients

WOS: 000208702501197

The evaluation of right ventricle systolic and diastolic functions in patients with newly diagnosed obstructive sleep apnea syndrome without hypertension

WOS: 000208702502671

Impaired right atrial systolic function in prosthesis patient mismatch after mitral valve replacement owing to persistent pulmonary hypertension: a velocity vector imaging study

WOS: 000208702605175

Subclinical left ventricular dysfunction in asymptomatic chronic mitral regurgitation patients with normal ejection fraction: A combined tissue doppler and velocity vector imaging-based study

PubMed ID: 21906162Background: The optimal timing of the surgery in asymptomatic severe mitral regurgitation (MR) remains a challenge. The aim of the study is to evaluate the subclinical changes in LV longitudinal functions by using a novel strain imaging technique; velocity vector imaging (VVI); in patients with chronic MR. Methods and Results: We studied 54 patients with asymptomatic, nonischemic, chronic MR (56.8 ± 9 years and 56% male) and 30 healthy controls (55 ± 6.5 years and 55% male) with normal ejection fraction. Patients with MR were analyzed in tertiles according to their regurgitant volumes (RV) and regurgitant fractions (RF): mild MR (RV 60 mL, RF ? 50%; n = 18). Conventional echocardiography and VVI-based strain imaging were performed to analyze LV functions. LV longitudinal peak systolic strain and strain rate (SRs) were significantly impaired in moderate and severe MR patients. © 2011, Wiley Periodicals, Inc

Subclinical left atrial mechanical dysfunction in patients with coronary artery disease: a velocity vector imaging study

WOS: 000208702605174

Relationship of left main coronary artery disease significance with carotid and renal artery disease

WOS: 000208702606221