{"title":"LOW VOLTAGE BRIDGE STRATEGY IN ABLATION OF SLOW PATHWAY: TECHNICAL TIPS.","authors":"Fabrizio Drago","doi":"10.1016/j.ipej.2025.10.002","DOIUrl":"https://doi.org/10.1016/j.ipej.2025.10.002","url":null,"abstract":"","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145233710","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Dual-chamber leadless pacemaker implant via the RIJ after failed femoral vein implant in a 65-year-old patient with symptomatic bradycardia, with left IJ port and right-sided AV fistula.","authors":"Shivani Lawa, Charlie Bingham, Daniel Cortez","doi":"10.1016/j.ipej.2025.09.009","DOIUrl":"https://doi.org/10.1016/j.ipej.2025.09.009","url":null,"abstract":"<p><strong>Introduction: </strong>Sinus node dysfunction (SND) is a disorder defined by abnormal initiation and conduction of electrical signals from the sinoatrial node. The preferred first-line treatment for a patient with symptomatic SND is a permanent pacemaker implant. We describe the implantation of an Aveir dual-chamber leadless pacemaker through the right internal jugular vein in a 65-year-old female patient with inaccessible femoral veins and a chemotherapy port in the left internal jugular vein.</p><p><strong>Methods: </strong>A retrospective review was performed at the University of California at Davis of the dual-chamber leadless pacemaker (Aveir DR) procedure.</p><p><strong>Results: </strong>A 65-year-old female with a history of chronic dialysis use and chemotherapy, with persistence of left internal jugular vein port, presented with symptomatic bradycardia. After a failed attempt at an outside institution, she presented for a dual-chamber leadless pacemaker implant at our institution. Via the right internal jugular vein, the Aveir VR was deployed with stable thresholds, impedance, and sensing into the ventricular septum, with a subsequent atrial device being deployed with stable thresholds, impedance, and sensing into the right atrial appendage. Follow-up at 8 days demonstrated a ventricular threshold of 0.75V at 0.2 ms, impedance of 440 Ohms, and sensing of 9.9 mV. Follow-up atrial threshold of 0.75V at 0.2 ms, impedance of 400 Ohms, and P wave sensing of 0.8 mV.</p><p><strong>Conclusion: </strong>Placement of the Aveir dual chamber leadless pacemaker is safe in an adult patient without any complications.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145226153","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ree Lu, Devin Skoll, Ahmed Y Gasmelseed, Geoffrey A Rubin, Elaine Y Wan, Amardeep S Saluja, Jose M Dizon, Angelo B Biviano, Hasan Garan, Hirad Yarmohammadi
{"title":"Chronic obstructive pulmonary disease is associated with higher recurrence rates of atrial fibrillation following catheter ablation.","authors":"Ree Lu, Devin Skoll, Ahmed Y Gasmelseed, Geoffrey A Rubin, Elaine Y Wan, Amardeep S Saluja, Jose M Dizon, Angelo B Biviano, Hasan Garan, Hirad Yarmohammadi","doi":"10.1016/j.ipej.2025.09.006","DOIUrl":"10.1016/j.ipej.2025.09.006","url":null,"abstract":"<p><strong>Background: </strong>Patients with atrial fibrillation (AF) and chronic obstructive pulmonary disease (COPD) are at increased risk of cardiovascular mortality compared to patients with AF alone. Consequently, employing rhythm control strategies such as AF catheter ablation could offer substantial benefits to patients with COPD. However, the impact of COPD on AF ablation outcomes is not well established.</p><p><strong>Methods: </strong>In this single-center case control study, we retrospectively analyzed 200 patients with AF and COPD, 52 of whom underwent AF catheter ablation. Those who underwent ablation were matched with a control group of patients with AF but without COPD who underwent ablation. Ablation outcomes were compared between the groups. Univariate and multivariable analysis were conducted for prediction of AF recurrence.</p><p><strong>Results: </strong>Compared to the controls, cases with COPD were more likely to have AF recurrence following catheter ablation (OR 13.42, P-value = 0.0001). Multivariable analysis revealed predictors of AF recurrence following catheter ablation included decreased use of loop diuretics and amiodarone. Patients with severe or very severe COPD were more likely to have left atrial enlargement than patients with mild or moderate COPD (OR 2.28, P-value = 0.026).</p><p><strong>Conclusion: </strong>Patients with AF and COPD were more likely than patients with AF but without COPD to experience AF recurrence following catheter ablation. Predictors of AF recurrence included decreased use of loop diuretics and amiodarone. Our study demonstrates that while ablation in patients with COPD is safe, ablation in patients with COPD is associated with higher AF recurrence rates.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145193317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ibrahim Antoun, Xin Li, Ahmed Abdelrazik, Mahmoud Eldesouky, Kaung Myat Thu, Mokhtar Ibrahim, Harshil Dhutia, Riyaz Somani, G André Ng
{"title":"Artificial intelligence in ventricular arrhythmias and sudden cardiac death: A guide for clinicians.","authors":"Ibrahim Antoun, Xin Li, Ahmed Abdelrazik, Mahmoud Eldesouky, Kaung Myat Thu, Mokhtar Ibrahim, Harshil Dhutia, Riyaz Somani, G André Ng","doi":"10.1016/j.ipej.2025.09.005","DOIUrl":"10.1016/j.ipej.2025.09.005","url":null,"abstract":"<p><p>Sudden cardiac death (SCD) from ventricular arrhythmias (VAs) remains a leading cause of mortality worldwide. Traditional risk stratification, primarily based on left ventricular ejection fraction (LVEF) and other coarse metrics, often fails to identify a large subset of patients at risk and frequently leads to unnecessary device implantations. Advances in artificial intelligence (AI) offer new strategies to improve both long-term SCD risk prediction and near-term VAs forecasting. In this review, we discuss how AI algorithms applied to the 12-lead electrocardiogram (ECG) can identify subtle risk markers in conditions such as hypertrophic cardiomyopathy (HCM), arrhythmogenic right ventricular cardiomyopathy (ARVC), and coronary artery disease (CAD), often outperforming conventional risk models. We also explore the integration of AI with cardiac imaging, such as scar quantification on cardiac magnetic resonance (CMR) and fibrosis mapping, to enhance the identification of the arrhythmogenic substrate. Furthermore, we investigate the application of data from implantable cardioverter-defibrillators (ICDs) and wearable devices to predict ventricular tachycardia (VT) or ventricular fibrillation (VF) events before they occur, thereby advancing care toward real-time prevention. Amid these innovations, we address the medicolegal and ethical implications of AI-driven automated alerts in arrhythmia care, highlighting when clinicians can trust AI predictions. Future directions include multimodal AI fusion to personalize SCD risk assessment, as well as AI-guided VT ablation planning through imaging-based digital heart models. This review provides a comprehensive overview for general medical readers, focusing on peer-reviewed advances globally in the emerging intersection of AI, VAs, and SCD prevention.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145193295","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Subhrajit Lahiri, Maya Baman, Robert M Huibonhoa, Sunita Ferns
{"title":"High-Density Mapping for AVNRT Ablation with Distorted Conduction System Anatomy Post-ASD Device Closure-Case Report.","authors":"Subhrajit Lahiri, Maya Baman, Robert M Huibonhoa, Sunita Ferns","doi":"10.1016/j.ipej.2025.09.002","DOIUrl":"https://doi.org/10.1016/j.ipej.2025.09.002","url":null,"abstract":"<p><strong>Background: </strong>Atrial septal defects (ASDs) are among the most common congenital heart defects, comprising about 10% of cases in children. Transcatheter closure of ASDs has become a preferred treatment due to its minimally invasive nature, quicker recovery, and reduced risk compared to surgical closure. Despite its advantages, the procedure carries a risk of post-procedural arrhythmias, particularly bradyarrhythmias and tachyarrhythmias, occurring in approximately 7-10% of patients. The development of these arrhythmias can be attributed to mechanical interference with conduction tissue or the formation of reentrant circuits around the closure device. These complications can present a challenge for long-term management and require careful monitoring and treatment.</p><p><strong>Case summary: </strong>We describe the case of an 8-year-old female who presented with recurrent palpitations after transcatheter closure of two ASDs using a 25 mm Gore Cardioform device. Her initial procedure was uneventful, with complete closure of both defects confirmed by echocardiography. However, one month after the procedure, the patient began experiencing episodes of palpitations and dizziness. Electrocardiographic monitoring revealed regular narrow complex tachycardia, and she was referred for further evaluation. An electrophysiology study confirmed the presence of AV nodal reentrant tachycardia (AVNRT). Detailed mapping revealed significant anatomical distortion of the slow pathway region of the AV node due to proximity to the implanted closure device. Using high-density electroanatomical mapping (HD mapping), we were able to precisely identify the critical pathways for reentry and perform successful slow pathway ablation, eliminating the tachycardia without damaging the closure device or surrounding conduction tissue. The fluoroscopy time was 0.126 mins.</p><p><strong>Discussion: </strong>This case highlights the potential complications that can arise following transcatheter ASD closure, particularly the development of arrhythmias like AVNRT. While arrhythmias following device closure are relatively rare, the mechanical interference caused by the device can result in structural changes to the heart's conduction system, predisposing patients to arrhythmias. In this case, the proximity of the Gore Cardioform device to the slow pathway in the AV node likely contributed to the development of AVNRT, as the device caused localized distortion of the anatomy, facilitating reentrant circuit formation. This case emphasizes the importance of long-term follow-up and the need for advanced mapping techniques in patients undergoing ASD closure who develop post-procedure arrhythmias. High-density electroanatomical mapping, in particular, was essential in this patient, allowing for the precise localization of the arrhythmogenic substrate while avoiding unnecessary damage to the closure device or surrounding healthy tissue. The use of this advanced technology not ","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145151183","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Navigating the complex relationship between COPD severity and AF recurrence: Correspondence.","authors":"Parth Aphale, Shashank Dokania, Himanshu Shekhar","doi":"10.1016/j.ipej.2025.09.001","DOIUrl":"10.1016/j.ipej.2025.09.001","url":null,"abstract":"","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-09-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"145058607","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Ree Lu, Devin Skoll, Ahmed Y Gasmelseed, Geoffrey A Rubin, Elaine Y Wan, Amardeep S Saluja, Jose M Dizon, Angelo B Biviano, Hasan Garan, Hirad Yarmohammadi
{"title":"Chronic Obstructive Pulmonary Disease is Associated with Higher Recurrence Rates of Atrial Fibrillation Following Catheter Ablation.","authors":"Ree Lu, Devin Skoll, Ahmed Y Gasmelseed, Geoffrey A Rubin, Elaine Y Wan, Amardeep S Saluja, Jose M Dizon, Angelo B Biviano, Hasan Garan, Hirad Yarmohammadi","doi":"10.1016/j.ipej.2025.08.009","DOIUrl":"https://doi.org/10.1016/j.ipej.2025.08.009","url":null,"abstract":"<p><strong>Background: </strong>Patients with atrial fibrillation (AF) and chronic obstructive pulmonary disease (COPD) are at increased risk of cardiovascular mortality compared to patients with AF alone. Consequently, employing rhythm control strategies such as AF catheter ablation could offer substantial benefits to patients with COPD. However, the impact of COPD on AF ablation outcomes is not well established.</p><p><strong>Methods: </strong>In this single-center case control study, we retrospectively analyzed 200 patients with AF and COPD, 52 of whom underwent AF catheter ablation. Those who underwent ablation were matched with a control group of patients with AF but without COPD who underwent ablation. Ablation outcomes were compared between the groups. Univariate and multivariable analysis were conducted for prediction of AF recurrence.</p><p><strong>Results: </strong>Compared to the controls, cases with COPD were more likely to have AF recurrence following catheter ablation (OR 13.42, P-value=0.0001). Multivariable analysis revealed predictors of AF recurrence following catheter ablation included decreased use of loop diuretics and amiodarone. Patients with severe or very severe COPD were more likely to have left atrial enlargement than patients with mild or moderate COPD (OR 2.28, P-value=0.026).</p><p><strong>Conclusion: </strong>Patients with AF and COPD were more likely than patients with AF but without COPD to experience AF recurrence following catheter ablation. Predictors of AF recurrence included decreased use of loop diuretics and amiodarone. Our study demonstrates that while ablation in patients with COPD is safe, ablation in patients with COPD is associated with higher AF recurrence rates.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-08-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"144972486","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}