Does the age of evaluation change the long-term follow-up of untreated pre-excitation syndrome?

Background: Due to high rates of ablation at the time of diagnostic EP study, follow-up of the natural history of untreated pre-excitation syndrome has become difficult. We present patients in which such data is available and study the effect of initial age on the evolution.

Methods: In this retrospective review, 126 patients, 47 aged ≤19 years, 79 aged more than>19 underwent 2 similar electrophysiological studies (EPS) within 1 to 25 years of one another (8.

Unresolved questions associated with the management of ventricular preexcitation syndrome.

Many recent recommendations concern the management of preexcitation syndrome. In clinical practice, they are sometimes difficult to use. The purpose of the authors was to discuss the main problems associated with this management.

Influence of advancing age on clinical presentation, treatment efficacy and safety, and long-term outcome of inducible paroxysmal supraventricular tachycardia without pre-excitation syndromes: A cohort study of 1960 patients included over 25 years.

Aim: To investigate the influence of increasing age on clinical presentation, treatment and long-term outcome in patients with inducible paroxysmal supraventricular tachycardia (SVT) without pre-excitation syndromes.

Methods: Clinical and electrophysiological study (EPS) data, as well as long-term clinical outcome (mean follow-up 2.4±4.

Follow-up of children or teenagers with paroxysmal supraventricular tachycardia, but without pre-excitation syndrome.

Background: Paroxysmal supraventricular tachycardia (SVT) is considered benign in children if the electrocardiogram in sinus rhythm is normal, but causes anxiety in parents, children and doctors.

Aims: To report on the clinical and electrophysiological data from children with SVT, their follow-up and management.

Methods: Overall, 188 children/teenagers (mean age 15±2.

Evolution of Clinical and Electrophysiological Data in Children with a Preexcitation Syndrome.

Background: With ablation, the follow-up of preexcitation syndrome now is difficult to assess. The purpose was to collect data of children with a preexcitation syndrome studied on two separate occasions within a minimal interval of 1 year.

Methods: This is a retrospective chart review of 47 children initially aged 12 ± 4 years, who underwent two or more invasive electrophysiological studies (EPS) within 1-25 years of one another (6.

Prediction of atrial fibrillation in patients with supraventricular tachyarrhythmias treated with catheter ablation or not. Classical scores are not useful.

Background: Atrial fibrillation (AF) and other supraventricular tachyarrhythmias (SVTA) [atrial flutter (AFL), atrioventricular nodal reentrant tachycardia (AVNRT), atrioventricular reentrant tachycardia (AVRT) and preexcitation syndrome (PS)] are frequently associated. We assessed the AF occurrence frequency and predictors according to the nature of SVTA and completion of SVTA ablation.

Methods And Results: 4169 patients were referred for SVTA (typical AVNRT: 1338, AVRT over a concealed accessory pathway: 329, atypical AVNRT: 205, AFL: 1321; PS: 976); mean age was 50±20years; electrophysiological study (EPS) was systematic; patients were followed for a mean duration of 3±4.

Influence of advancing age on clinical presentation, treatment efficacy and safety, and long-term outcome of pre-excitation syndromes: a retrospective cohort study of 961 patients included over a 25-year period.

Objectives: There are very little data on pre-excitation syndrome (PS) in the elderly. We investigated the influence of advancing age on clinical presentation, treatment and long-term outcome of PS.

Setting: Single-centre retrospective study of patient files.

Age-related location of manifest accessory pathway and clinical consequences.

Background: Accessory pathway (AP) ablation is not always easy. Our purpose was to assess the age-related prevalence of AP location, electrophysiological and prognostic data according to this location.

Methods: Electrophysiologic study (EPS) was performed in 994 patients for a pre-excitation syndrome.

Predictors and prognostic significance of tachycardiomyopathy: insights from a cohort of 1269 patients undergoing atrial flutter ablation.

Background: Atrial flutter-related tachycardiomyopathy (AFL-TCM) is a rare and treatable cause of heart failure. Little is known about its epidemiology and long-term prognosis. Our aims are to determine the prevalence, predictors and outcomes of AFL-TCM.

Electrophysiological study generally is negative in patients <40 years suspected of supraventricular tachycardia but also complaining of chest pain and/or syncope.

Background: The diagnosis of paroxysmal supraventricular tachycardia (SVT) frequently is a dilemma. Electrophysiological study (EPS) is the only means to evaluate the nature of symptoms when noninvasive studies remain negative. Our objectives were to determine the clinical factors of negativity or positivity of (EPS) in patients suspected of SVT.

Risk and outcome after ablation of isthmus-dependent atrial flutter in elderly patients.

Purpose Of The Research: To study the influence of age on the clinical presentation and long-term outcome of patients referred for atrial flutter (AFL) ablation. Age-related differences have been reported regarding the prognosis of arrhythmias.

Methods: A total of 1187 patients with a mean age 65±12 years consecutively referred for AFL ablation were retrospectively analyzed in the study.

What is The Utility of Electrophysiological Study in Elderly Patients with Syncope and Heart Disease?

Background: Syncope in elderly patients with heart disease is a growing problem. Its aetiological diagnosis is often difficult. We intended to investigate the value of the electrophysiological study (EPS) in old patients with syncope and heart disease.

Recurrences of symptoms after AV node re-entrant tachycardia ablation: a clinical arrhythmia risk score to assess putative underlying cause.

Purpose Of The Research: To identify clinical factors associated with the probability for each arrhythmic mechanism causing recurring symptoms after atrioventricular nodal re-entrant tachycardia (AVNRT) ablation. Slow pathway radiofrequency ablation is used to treat AVNRT. After ablation, recurrence of symptoms due to AVNRT or other arrhythmias can occur.

Myocardial deformation pattern in left ventricular non-compaction: Comparison with dilated cardiomyopathy.

Introduction: Left ventricular (LV) systolic dysfunction is the most frequent initial presentation of patient with LV noncompaction (NC). Our objectives were to evaluate myocardial contraction properties in patients with LVNC and the relationship of non-compacted segments with the degree of global and regional systolic deformation.

Methods: We included 50 LVNC with an echocardiography and speckle imaging calculation of peak longitudinal strain (PLS).

Factors of negativity of electrophysiological study in children and teenagers complaining of tachycardia and prognostic significance.

When non-invasive studies remain negative, the diagnosis of unexplained tachycardia in the young is a dilemma. The purpose of the study was to determine the factors of negativity of transesophageal electrophysiological study (EPS) in children/teenagers complaining of tachycardia and the prognostic value. Two hundred and seventy-three children with a normal ECG in sinus rhythm, aged from 6 to 19 years (15 ± 3), complained of tachycardia.

Influence of the mode of management of acute myocardial infarction on the inducibility of ventricular tachyarrhythmias with programmed ventricular stimulation after myocardial infarction.

Background: Programmed ventricular stimulation (PVS) is a technique for screening patients at risk for ventricular tachycardia (VT) after myocardial infarction (MI), but the results might be difficult to interpret.

Objectives: To investigate the results of PVS after MI, according to date of completion.

Methods: PVS results were interpreted according to the mode of MI management in 801 asymptomatic patients: 301 (group I) during the period 1982-1989, 315 (group II) during 1990-1999, and 185 (group III) during 2000-2010.

A case series of patients with poorly-tolerated arrhythmias related to a preexcitation syndrome and presenting with atypical ECG.

Unlabelled: The aim of study was to report different and unusual patterns of preexcitation syndrome (PS) noted in patients referred for studied for poorly-tolerated arrhythmias and their frequency. Electrophysiologic study (EPS) is an easy means to identify a patient with PS at risk of serious events. However the main basis for this diagnosis is the ECG which associates short PR interval and widening of QRS complex with a delta wave.

Risk of atrial fibrillation after atrial flutter ablation: impact of AF history, gender, and antiarrhythmic drug medication.

Introduction: Atrial fibrillation (AF) and flutter (AFL) are frequently associated. We assessed the frequency and identified the predictors of AF occurrence after AFL ablation.

Methods And Results: A total of 1,121 patients referred for AFL ablation were followed for a mean duration of 2.

Localizing the critical isthmus of postinfarct ventricular tachycardia: the value of pace-mapping during sinus rhythm.

Background: Most postinfarct ventricular tachycardias (VTs) are sustained by a reentrant mechanism. The "protected isthmus" of the reentrant circuit is critical for the maintenance of VTs and the target for catheter ablation. Various techniques based on conventional electrophysiology and/or detailed three-dimensional (3D) reconstruction of the VT circuit are used to unmask this isthmus.

Atrial flutter or fibrillation is the most frequent and life-threatening arrhythmia in myotonic dystrophy.

Background: Several arrhythmias were reported in myotonic dystrophy (MD).

Objectives: To evaluate the prevalence of atrial fibrillation (AF) and atrial flutter (AFL) in MD and the clinical consequences.

Methods: One hundred sixty-one patients, mean age 41 ± 14 years, were referred for a type 1 MD.

Acute myocarditis presenting with ventricular arrhythmias: the role of CMR in the differential diagnosis of ARVD.

We herein present the findings of the case of a 23-year-old man who was hospitalized for ventricular tachycardia (VT) with no previous history of cardiac disease or any family history of sudden death. Based on the clinical features as well as the echographic and MRI results, the patient was diagnosed with both acute viral myocarditis and arythmogenic right ventricular dysplasia (ARVD). The patient underwent implantation of an automatic cardioverter defibrillator.