15 research outputs found
Outcomes after stepwise ablation for persistent atrial fibrillation in patients with heart failure
Get PDFAbstractBackgroundThere is limited data regarding the outcomes after stepwise ablation for persistent atrial fibrillation (AF) in patients with heart failure (HF).Methods and resultsPatients without structural heart disease undergoing stepwise ablation for persistent AF (continuous AF≤1 year) were studied (n=108; age, 61±10 years) and 32 patients had a history of HF. The HF patients were further grouped on the basis of left ventricular ejection fraction (LVEF)≤45% (n=15) and >45% (n=17). During a median follow-up period of 2.2 years, repeated ablations were necessary in 65 patients. The proportion of patients that were arrhythmia free 1 year after the last ablation was 67% in patients with LVEF≤45%, 86% in LVEF>45%, and 91% in no HF (p=0.0009). In patients with LVEF≤45%, the AF burden was reduced to less than one paroxysmal episode per month, and patients with and without recurrences both showed significant increases in LVEF over the follow-up period (38±7% to 60±10% and 37±6% to 53±10%, respectively).ConclusionsHF patients with LVEF≤45% had lower chances to remain free from arrhythmias after stepwise ablation for persistent AF than those with LVEF>45%. Nevertheless, LVEF also improved in patients with recurrences, reflecting the observed reduction in AF burden and emphasizing the benefits of ablation
Electrophysiological evidence of localized reentry as a trigger and driver of atrial fibrillation at the junction of the superior vena cava and right atrium
No full textEndocardial-only catheter ablation with substantial improvement in ventricular fibrillation recurrences in a patient with Brugada syndrome
Get PDFFirst case of epicardial ablation to coexistent J waves in the inferior leads in a patient with clinical diagnosis of Brugada syndrome
Get PDFReply to the Editor – Regarding swallowing-induced atrial tachycardia arising from superior vena cava: Significant involvement of parasympathetic nerve activity
No full textSwallowing-induced atrial tachycardia arising from superior vena cava: Significant involvement of parasympathetic nerve activity
No full textClinical and electrophysiological features of respiratory cycle–dependent atrial tachycardia: An analysis of three cases
No full text
Right coronary artery wall edema provoked by cavotricuspid isthmus radiofrequency ablation
No full textDifferentiation of atrial tachycardia from other long RP tachycardias by electrocardiographic characteristics
Get PDFBackground: The incidence and electrocardiographic characteristics of atrial tachycardia (AT) among long RP tachycardias have not been fully elucidated.
Methods and results: Thirty-six patients with 37 long RP tachycardias were classified as having AT (n=23) or non-AT (n=14). We analyzed the electrocardiographic features, including the ratio between the RP and PR intervals (RP/PR ratio), P-wave morphology, and P-wave duration. The RP/PR ratio was higher in AT than in non-AT (2.01±0.54 vs. 1.57±0.24, P96 ms.
Conclusion: AT accounted for nearly two thirds of long RP tachycardias in this cohort. Electrocardiographic features, including the RP/PR ratio, polarity of the P wave, and P-wave duration were useful in the differentiation of AT
