Publications by authors named "JuliAn Rodriguez Garcia"
Article Synopsis
- The study investigates whether cardiac resynchronization therapy with a defibrillator (CRTD) is better than therapy with a pacemaker (CRTP) for patients with non-ischemic cardiomyopathy (NICM) and low risk of arrhythmias.
- It analyzes data from 167 NICM patients, looking for predictors of heart function improvement (echocardiographic response) and serious heart rhythm issues (arrhythmias) over a median follow-up of 63 months.
- Findings reveal that patients without late gadolinium enhancement (LGE) show a much higher response rate to CRT (81% vs. 53%) and no arrhythmic events, suggesting they are ideal candidates for CRTP rather than
Background: ADAS-3D software elaborates cardiac magnetic resonance (CMR) images to obtain a quantitative evaluation of dense scar and border zone (BZ), including BZ channels, which can be useful for ventricular tachycardia ablation and risk stratification. However, most prior reports with ADAS-3D used flexible thresholds (60% ± 5% and 40% ± 5% of maximum pixel signal intensity) to define dense scar and BZ. The impact of such variations of the threshold values on the measurements obtained with ADAS-3D is unknown.
View Article and Find Full Text PDFAims: To evaluate predictors of electrical storm (ES), including chronic total occlusion in an infarct-related coronary artery (infarct-related artery CTO, IRACTO), in a cohort of patients with prior myocardial infarction (MI) and implantable cardioverter-defibrillators (ICD).
Methods: Multicenter observational cohort study including 643 consecutive patients with prior MI and a first ICD implanted between 2005 and 2018 at three tertiary hospitals. All the patients included in the study had undergone a diagnostic coronary angiography before ICD implantation.
Right ventricular (RV) resynchronization therapy (CRT) with stimulation electrode implantation in the latest activation area guided by a high-density electroanatomic activation map was successfully performed in a patient with repaired tetralogy of Fallot (rToF), severe pulmonary regurgitation (PR), and severe dysfunction and dilatation of the right ventricle. An improvement in his clinical condition and intraventricular synchrony was achieved. There is a mechanical-electrical interaction in the right ventricle of patients with rToF; therefore, RV CRT in selected cases may be beneficial.
View Article and Find Full Text PDFBackground: Three-dimensional (3D) substrate characterization by high-resolution late gadolinium enhancement cardiac magnetic resonance (LE-CMR) is useful for guiding ventricular tachycardia ablation of the left ventricle in ischemic heart disease.
Objective: The purpose of this study was to validate the substrate characterization and 3D reconstruction of LE-CMR images of the right ventricle (RV) in patients with repaired tetralogy of Fallot (rTOF) and to identify the algorithm that best fits with electroanatomic mapping (EAM).
Methods: RV LE-CMR images were compared with RV EAM in 10 patients with rTOF.
Objective: The use of implantable cardiac monitors (ICM) is highly useful in syncope workup. Latest-generation devices can detect asymptomatic episodes of atrial fibrillation. The main objective of this study was to determine the incidence of subclinical atrial fibrillation (AF) detected in a patient population undergoing prolonged electrocardiographic monitoring with an ICM for the etiological workup of syncope.
View Article and Find Full Text PDFBackground: Severe aortic stenosis (AoS) is considered a primary cause of syncope. However, other mechanisms may be present in these patients and accurate diagnosis can have important clinical implications. The aim of this study is to assess the different etiologies of syncope in patients with severe AoS and the impact on prognosis of attaining a certain or highly probable diagnosis for the syncope.
View Article and Find Full Text PDFObjectives: This study sought to establish the best definition of left ventricular adverse remodeling (LVAR) to predict outcomes and determine whether its assessment adds prognostic information to that obtained by early cardiac magnetic resonance (CMR).
Background: LVAR, usually defined as an increase in left ventricular end-diastolic volume (LVEDV) is the main cause of heart failure after an ST-segment elevated myocardial infarction; however, the role of assessment of LVAR in predicting cardiovascular events remains controversial.
Methods: Patients with ST-segment elevated myocardial infarction who received percutaneous coronary intervention within 6 h of symptom onset were included (n = 498).
Article Synopsis
- The study compares the effects of procainamide and flecainide on the His-Purkinje system during electrophysiological studies (EPS) in patients with syncope and bundle branch block (BBB).
- Results show that flecainide leads to a greater increase in the His-ventricular interval and has a higher diagnostic yield than procainamide.
- Patients who tested negative with flecainide had a lower need for pacemaker implantation compared to those who tested negative with procainamide.
Article Synopsis
- Patients with syncopal episodes and bundle branch block (BBB) are at risk of developing atrioventricular block (AVB), but identifying high-risk patients through electrophysiological study (EPS) often leads to false negatives.
- The study involved 159 patients with syncope and BBB, showing that 24.8% needed pacemakers due to bradyarrhythmia during follow-up, with bifascicular block and HV intervals ≥60 ms being significant predictors.
- An implantable loop recorder is a safe option for monitoring patients after negative EPS, and a risk score based on certain criteria can help identify those who may require further intervention, such as pacemaker implantation.
Article Synopsis
- The study investigates predictors of positive electrophysiological study (EPS) results in patients who experience syncope and have bundle branch block (BBB).
- It included 271 patients, observing that 41.7% had positive EPS results, with factors like conduction disturbance patterns and long PR intervals serving as significant predictors.
- Patients with left bundle branch block (LBBB) or bifascicular block were associated with a higher likelihood of positive EPS, while clinical factors did not significantly impact the results.
Prognostic Value of Strain by Tissue Tracking Cardiac Magnetic Resonance After ST-Segment Elevation Myocardial Infarction.
JACC Cardiovasc Imaging
October 2018
Objectives: The aim of this study was to evaluate the prognostic value of strain as assessed by tissue tracking (TT) cardiac magnetic resonance (CMR) soon after ST-segment elevation myocardial infarction (STEMI).
Background: The prognostic value of myocardial strain as assessed post-STEMI by TT-CMR is unknown.
Methods: The authors studied the prognostic value of TT-CMR in 323 patients who underwent CMR 1 week post-STEMI.
Role of PET/angio-CT in the Evaluation of Intracardiac Devices.
Rev Esp Cardiol (Engl Ed)
January 2018
Purpose: Although cavotricuspid isthmus-dependent atrial flutter (CTI-AFL) ablation is a highly efficacious treatment, a bidirectional CTI block cannot be achieved in some patients. In this study, we sought to determine the predictors of acute inefficacy of CTI-AFL ablation and the predictors of the radiofrequency (RF) energy time required to achieve a complete bidirectional CTI block.
Methods: All consecutive patients who underwent stand-alone CTI-AFL ablation in our institution, except patients with congenital heart disease, were included in this retrospective study.