Cardiac implantable electronic device remote monitoring in a large cohort of patients and the need for planning.

The remote monitoring (RM) of cardiac implantable electronic devices (CIED) is standard of care. We describe an organizational and projection RM workload model. At the time of the analysis (2015), 3995 CIED patients were followed-up; 1582 (40.

Single-center experience with wearable cardioverter-defibrillator as a bridge before definitive ICD implantation.

Background: The wearable cardioverter-defibrillator (WCD) has been approved for patients with poor left ventricular ejection fraction (LVEF) who are at risk of sudden arrhythmic death for a limited period but are not candidates for a definitive implantable cardioverter-defibrillator (ICD). The present study sought to retrospectively analyse our single-centre experience.

Methods And Results: All consecutive WCDs applied between April 2017 and September 2018 in our centre were enrolled.

Safety steps for a non-fluoroscopic approach in right-sided electrophysiology procedures: A point of view.

Background: Electro-anatomic 3D mapping systems enable the fluoroscopy (FL) exposure to be reduced. In right-heart supraventricular tachycardia (SVT) procedures, FL could potentially be avoided. Our aim was to discuss some steps focusing on safety.

Multicentre comparison Of shock efficacy using single-vs. Dual-coil lead systems and Anodal vs. cathodaL polarITY defibrillation in patients undergoing transvenous cardioverter-defibrillator implantation. The MODALITY study.

Purpose: An optimal active-can lead configuration during implantable cardioverter defibrillator (ICD) placement is important to obtain an adequate defibrillation safety margin. The purpose of this multicenter study was to evaluate the rate of the first shock success at defibrillation testing according to the type of lead implant (single vs. dual coil) and shock polarity (cathodal and anodal) in a large series of consecutive patients who received transvenous ICDs.

Straight screw-in atrial leads "J-post shaped" in right appendage versus J-shaped systems for permanent atrial pacing: a safety comparison.

Background And Objectives: The reliability of active-fixation atrial leads has been compared with that of passive-fixation leads; comparisons have also been made between straight and J-shaped screw-in lead systems. However, few data are available on procedural and short-term safety. This retrospective study compared the procedural safety of non-pre-shaped screw-in leads with that of passive- and active-fixation J-shaped leads.

Late atrial tachycardia following pulmonary vein isolation: analysis of successful discrete ablation sites.

Background: The role of additional left atrial linear lesions performed during pulmonary vein isolation (PVI) to prevent atrial tachycardias (ATs) is not yet clear.

Objective: To analyse successful ablation sites of late-onset post-PVI AT, and to understand whether additional ablation lines at mitral isthmus and left atrium (LA) roof could have been useful in preventing these jatrogenic ATs.

Methods: From March, 2002 to August, 2008, 366 patients underwent PVI alone for drug-refractory atrial fibrillation (AF).

Role of pulmonary veins isolation in persistent atrial fibrillation ablation: the pulmonary vein isolation in persistent atrial fibrillation (PIPA) study.

Background: The role of pulmonary veins (PV) isolation in patients with persistent atrial fibrillation (AF) is still debated. The aim of this study was to evaluate the adjunctive role of PV isolation in patients with persistent AF who underwent circumferential PV ablation (anatomical approach).

Methods: We treated 97 consecutive patients presenting with drug-refractory persistent AF by an anatomical approach (group A, n = 36, mean age = 60 +/- 8 years, 29 males) or an integrated approach (group B, n = 61, mean age 59 +/- 10 years, 48 males).

Integration of three-dimensional left atrial magnetic resonance images into a real-time electroanatomic mapping system: validation of a registration method.

Background: The alignment of three-dimensional (3D) left atrial images acquired by magnetic resonance (MR) with the anatomical information yielded by 3D mapping systems is one of the most critical issues in image integration techniques for catheter ablation of atrial fibrillation (AF). We assessed the accuracy of a simplified method of superimposing 3D MR left atrial images on real-time left atrial electroanatomic maps (registration).

Methods: MR data on the left atrium in 40 patients with drug-refractory AF were imported into the CartoMerge (Biosense Webster, Inc.

Pulmonary vein isolation predicts freedom from arrhythmia after circumferential antral ablation for paroxysmal atrial fibrillation.

Objectives: The aims of this observational study were to evaluate (i) the feasibility of obtaining bidirectional pulmonary vein (PV) isolation by means of circumferential radiofrequency ablation of the antral aspect of the PV ostium; (ii) whether the electrophysiological demonstration of bidirectional PV isolation predicts freedom from atrial tachyarrhythmia recurrence after ablation in patients with paroxysmal atrial fibrillation.

Methods: The study group comprised 28 patients affected by frequent recurrences of paroxysmal atrial fibrillation refractory to antiarrhythmic drugs, who underwent transcatheter ablation of the PVs by means of a non-fluoroscopic navigation system. Radiofrequency pulses were delivered in a point-by-point fashion at the antral aspect of the ostium of each vein presenting distal PV potentials.

Atrio-ventricular block during left atrial flutter ablation.

We present a case of a patient treated with catheter ablation for atrial fibrillation aiming to pulmonary veins isolation. During ablation, atrial fibrillation organized into a left atrial flutter. Electroanatomic and electrophysiologic mapping revealed the anterior left atrium area between the mitral annulus and left atrium septum as a critical region for flutter ablation.

Long-term outcome of patients with atrioventricular node reentrant tachycardia.

Background: Little information is available on the natural history of patients with AVNRT. The purpose of this study was to compare the outcome of patients with Atrioventricular node reentrant tachycardia (AVNRT) who underwent ablation with those on antiarrhythmic therapy and those not receiving drugs.

Methods: 93 consecutive patients (mean age=33.

Long-term outcome of right and left atrial radiofrequency ablation in patients with persistent atrial fibrillation.

Objectives: To investigate the clinical outcome of right and left atrial radiofrequency ablation after the first 12 months in patients with drug-refractory persistent atrial fibrillation (AF), and to identify predictors of long-term success.

Methods: We analyzed the clinical outcome of 74 consecutive patients with a follow-up >12 months who underwent right and left atrial ablation for persistent AF. Patients who did not present symptomatic or asymptomatic atrial tachyarrhythmias (AT) lasting >30 seconds after the first 3 months of follow-up were defined responders to pulmonary veins ablation.

Antibiotic prophylaxis with a single dose of cefazolin during pacemaker implantation: incidence of long-term infective complications.

Objective: Systemic and localized infections related to permanent pacemaker implantation are not common, but are serious and potentially life-threatening complications. The aims of this prospective observational study were: (1) to assess the safety and long-term efficacy of a simplified scheme of antibiotic prophylaxis, and (2) to identify the predictors of long-term infective complications, in patients undergoing pacemaker implantation or replacement.

Methods And Results: From October 1998 to July 2001, 852 patients (mean age 77.

[Circumferential isolation of pulmonary veins with transcatheter radiofrequency ablation in the treatment of atrial fibrillation].

Background: Circumferential anatomical isolation of the pulmonary veins by radiofrequency transcatheter ablation is a new technique for the treatment of atrial fibrillation (AF). The aim of our study was to evaluate the efficacy and the safety of circumferential radiofrequency ablation of the pulmonary veins and to analyze clinical, echocardiographic and procedural parameters as possible predictors of clinical success.

Methods: We performed circumferential isolation of the pulmonary veins in 33 patients with paroxysmal (15 patients) or persistent AF (18 patients) refractory to at least two antiarrhythmic drugs.

Variables correlated with early relapses after external electrical cardioversion of persistent atrial fibrillation.

Background: The aim of this study was to identify the clinical and echocardiographic variables possibly correlated with the early relapses of atrial fibrillation (AF) after external electrical cardioversion (EC) in a large cohort of patients with persistent AF.

Methods: Two hundred patients (117 males, 83 females, mean age 67.9 +/- 8.

Feasibility of pulmonary vein ostia radiofrequency ablation in patients with atrial fibrillation: a multicenter study (CACAF pilot study).

Radiofrequency (RF) catheter ablation has been proposed as a treatment of atrial fibrillation (AF). Several approaches have been reported and success rates have been dependent on procedural volume and operator's experience. This is the first report of a multicenter study of RF ablation of AF.

Effects of verapamil and metoprolol on recovery from atrial electrical remodeling after cardioversion of long-lasting atrial fibrillation.

The aim of this prospective, randomized study was to investigate the effect of pretreatment with two different intracellular calcium-lowering drugs (verapamil and metoprolol) on recovery from atrial effective refractory period (AERP) shortening after internal electrical cardioversion (EC) of persistent atrial fibrillation (AF) in patients on amiodarone. Twenty-one patients on amiodarone for at least 30 days were referred to our hospital for internal EC of a persistent AF refractory to external EC. They were randomized to receive only amiodarone (group AMI, n=7), or amiodarone and verapamil 240 mg/day (group VER, n=7), or amiodarone and metoprolol 100 mg/day (group MET, n=7).

Myocardial perfusion and metabolic changes induced by conventional right and biventricular pacing in dilated cardiomyopathy evaluated by positron emission tomography.

Background: Biventricular pacing induces well-known effects on myocardial wall function, apparently providing better results in comparison with conventional right pacing in patients presenting with dilated cardiomyopathy (DCM). However, at the moment the secondary changes in myocardial metabolism induced by pacing devices are unclear. The aim of our study was to evaluate the possible changes in myocardial metabolism and perfusion induced by cardiac pacing in these patients.