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PURPOSE To evaluate the prognostic outcome of cardiac computed tomography (CT) for prediction of major adverse cardiac events (MACEs) in low-risk patients suspected of having coronary artery disease (CAD) and to explore the differential prognostic values of coronary artery calcium (CAC) scoring and coronary CT angiography. MATERIALS AND METHODS(More)
OBJECTIVES The purpose of this study was to evaluate the antiarrhythmic potential of mesenchymal stem cells (MSC) under a different environment. BACKGROUND Little is known about how environmental status affects antiarrhythmic potential of MSCs. METHODS To investigate the effect of paracrine factors secreted from MSCs under different circumstances on(More)
OBJECTIVE Circumferential pulmonary vein isolation (CPVI) has been considered the cornerstone of radiofrequency catheter ablation (RFCA) for atrial fibrillation (AF). However, it is unclear whether linear ablation in addition to CPVI improves clinical outcome. DESIGN Prospective randomised study to compare the efficacy of CPVI and CPVI with additional(More)
By using late gadolinium enhancement cardiac magnetic resonance (LGE-CMR) imaging, we compared left atrial late gadolinium enhancement (LA-LGE) quantification methods based on different references to characterize the left atrial wall in patients with atrial fibrillation (AF). Thirty-eight patients who underwent three-dimensional LGE-CMR imaging before(More)
BACKGROUND New-onset postoperative atrial fibrillation (POAF) is associated with poor short- and long-term outcomes after isolated coronary artery bypass graft (CABG). This study evaluated whether new-onset POAF is independently associated with long-term (>1 year) atrial fibrillation (AF) and mortality. METHODS Among 1,171 consecutive patients who had(More)
PURPOSE Previous studies have demonstrated an association between eNOS polymorphisms and atrial fibrillation (AF). We sought to determine whether eNOS polymorphisms are associated with AF recurrence after a radiofrequency catheter ablation (RFCA). MATERIALS AND METHODS A total of 500 consecutive patients (56±11 years, 77% male) with paroxysmal (68%) or(More)
The structural and functional characteristics of left atrial appendage (LAA) in patients with atrial fibrillation (AF) with previous stroke remain incompletely elucidated. This study investigated whether a larger LAA orifice is related to decreased LAA flow velocity and stroke in nonvalvular AF. The dimension, morphology, and flow velocity of LAA were(More)
AIM Insulin resistance is associated with increased sympathetic activity and elevated angiotensin II which may contribute to the excessive increase in arterial blood pressure during exercise. In this study, we hypothesized that increased insulin resistance will be significantly associated with hypertensive response to exercise (HRE) in non-diabetic(More)
OBJECTIVES This study was designed to determine the prognostic value of multidetector coronary computed tomography angiography (CTA) in relation to exercise electrocardiography (XECG) findings. BACKGROUND The prognostic usefulness of coronary CTA findings of coronary artery disease in relation to XECG findings has not been explored systematically. (More)
BACKGROUND Left atrial (LA) enlargement is associated with atrial fibrillation (AF) recurrence after radiofrequency ablation (RFA). However, impact of right atrial (RA) size on outcomes after RFA is unclear. METHODS Patients who underwent RFA of AF (n=242, 197 men, 57 ± 11 years) were enrolled (159 paroxysmal [PaAF] and 83 persistent [PeAF]).(More)