{"title":"Spatial displacement on three-dimensional maps caused by rhythm differences in premature ventricular contraction ablation.","authors":"Yusuke Sakamoto, Hiroyuki Osanai, Yoshihito Nakashima, Hiroshi Asano","doi":"10.1016/j.ipej.2025.01.004","DOIUrl":"10.1016/j.ipej.2025.01.004","url":null,"abstract":"<p><strong>Introduction: </strong>Three-dimensional (3D) maps are useful for premature ventricular contraction (PVC) ablation. However, positional information changes compared with sinus rhythm when PVCs appear, rendering ablation difficult. We aimed to understand the spatial displacement characteristics of PVC ablation in 3D maps and the therapeutic effect after correction using the LAT-Hybrid function.</p><p><strong>Methods: </strong>Thirty-two consecutive patients who underwent PVC ablation from 2022 to 2024 were included. Parallel mapping was used to analyze the LAT-Hybrid function. Ablation was performed at the best Hybrid-LAT location. Characteristics according to PVC origin (right ventricular outflow tract, ventricular septum, and left ventricular outflow tract/left ventricular summit) were compared. Efficacy was evaluated by acute response and clinical outcome on 24-h Holter after 6 months.</p><p><strong>Results: </strong>In all cases, the PVC origin was spatially displaced by 5.6 ± 1.9 (right ventricular outflow tract, 6.0 ± 1.8; ventricular septum, 4.0 ± 1.4; left ventricular outflow tract/left ventricular summit, 6.0 ± 1.7) mm, and the septum area was significantly smaller. The voltage of origin was 60 % in the low voltage-transitional zone, which coincided with 80 % of the origin determined from the ripple map. The pace map at the location analyzed with LAT-Hybrid was high at 95.4 % ± 3.6 %, and ablation was successful in 96.9 % at the same site. The clinical outcome was good 6 months after ablation.</p><p><strong>Conclusion: </strong>Spatial displacement of the 3D map caused by differences in excitation propagation can lead to misidentification of the origin. PVC ablation corrects spatial displacement and obtains accurate positional information, leading to successful ablation.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143068505","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}
Andrea Dell'Aquila, Carmelo La Greca, Amedeo Prezioso, Simone Zanchi, Joseph Antoine Kheir, Domenico Pecora
{"title":"Real-world single-center preliminary experience of radiofrequency balloon pulmonary vein ablation for atrial fibrillation.","authors":"Andrea Dell'Aquila, Carmelo La Greca, Amedeo Prezioso, Simone Zanchi, Joseph Antoine Kheir, Domenico Pecora","doi":"10.1016/j.ipej.2025.01.003","DOIUrl":"10.1016/j.ipej.2025.01.003","url":null,"abstract":"<p><p>Atrial fibrillation (AF) is the most common cardiac arrhythmia and pulmonary vein isolation (PVI) by percutaneous transcatheter ablation is its pivotal treatment. Nowadays, several techniques using different energy sources are used, such as radiofrequency (RF), cryoablation and laser ablation. A new technology that combines the strengths of different techniques has been developed, in particular having both the speed of one-shot techniques and the selectivity and precision of point-by-point RF: the RF balloon (RFB). Recent clinical studies<sup>1-3</sup> have demonstrated its efficacy and safety, with good results in terms of first pass isolation, procedural duration and fluoroscopy time. However, real-world data regarding RFB ablation is scarce, therefore with this study we aimed to describe the experience of our center with this technology (one of the first adopting it in our country). We prospectively enrolled in a single-center a total of 20 consecutive patients who underwent AF ablation with RFB. The primary endpoint, i.e. PVI defined as stable absence of any electrical conduction from and into the veins, was met by 18 patient (90 %). Mean procedural and fluoroscopy times were 79 ± 30.68 min and and 15.36 ± 6.57 min, respectively, dwelling time was 30.3 ± 8.09 min. The only complication reported was a single case mild pericardial effusion 24 h after the procedure, likely of inflammatory nature, which was treated conservatively and resolved before discharge. With this study we demonstrated that PVI with RFB appears to be an effective and safe technique in a real world setting, with many upsides and a reduced atrial dwelling time that theoretically could reduce the risk of thromboembolic complications. Further studies on larger number of patients are needed to confirm the results we obtained.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143047332","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":"Targeting deep substrates with radiofrequency: Unipolar with half-normal saline irrigation vs. Bipolar with normal saline irrigation.","authors":"Alessio Gasperetti, Pasquale Santangeli","doi":"10.1016/j.ipej.2025.01.002","DOIUrl":"10.1016/j.ipej.2025.01.002","url":null,"abstract":"","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"143042161","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}
Ojas H Mehta, Keyrian Louis Le Gratiet, Markus Sikkel, Laurence D Sterns
{"title":"Conduction disease in cardiac amyloidosis patients: A case series suggesting a role for left bundle branch area pacing.","authors":"Ojas H Mehta, Keyrian Louis Le Gratiet, Markus Sikkel, Laurence D Sterns","doi":"10.1016/j.ipej.2025.01.001","DOIUrl":"10.1016/j.ipej.2025.01.001","url":null,"abstract":"<p><p>Transthyretin Cardiac amyloidosis (ATTR-CA) is an increasingly recognised cause of heart failure in our elderly patients with preserved ejection fraction. Patients with ATTR-CA who require permanent pacemaker implantation often have preserved ejection fraction and do not meet the clinical indication for cardiac resynchronization therapy (CRT). In these patients, left bundle branch area pacing (LBBAP) can be a reasonable option to maximise physiological activation of the left ventricle. We describe a series of three patients with cardiac amyloidosis who have undergone LBBAP with the use of lumenless leads and successful capture of the myocardium and left bundle branch region.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2025-01-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142928331","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}
Deniz Elcik, Aydin Tuncay, Mustafa Fehmi Bireciklioglu, Mehmet Tugrul İnanc
{"title":"The importance of inflammation in atrial fibrillation recurrence in patients with atrial fibrillation treated with Cryo balloon ablation.","authors":"Deniz Elcik, Aydin Tuncay, Mustafa Fehmi Bireciklioglu, Mehmet Tugrul İnanc","doi":"10.1016/j.ipej.2024.12.005","DOIUrl":"https://doi.org/10.1016/j.ipej.2024.12.005","url":null,"abstract":"","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-12-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142923582","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":"Leadless pacemaker implantation in challenging scenarios: A case report series of patients with mechanical tricuspid valves.","authors":"Surachat Jaroonpipatkul, Sutham Sutheerapatranont, Leenhapong Navaravong, Apichai Pokawattana","doi":"10.1016/j.ipej.2024.12.002","DOIUrl":"10.1016/j.ipej.2024.12.002","url":null,"abstract":"<p><strong>Introduction: </strong>The advancement of medical technology has introduced leadless pacemakers (LPMs) as a significant innovation in cardiac pacing, offering potential advantages over traditional ventricular transvenous pacemakers. This report explores the application of LPMs in two patients with complex valvular histories, particularly those with mechanical tricuspid valves.</p><p><strong>Case reports: </strong>The first case involves a 60-year-old male with a history of rheumatic heart disease and triple valve replacement who developed a high-grade AV block. Due to significant RV pacing, a single-chamber VVI pacemaker using the Micra Transcatheter Pacing System was successfully implanted, navigating the mechanical tricuspid valve with stable pacing parameters. The second case describes a 70-year-old female with HIV, diabetes, hypothyroidism, and multiple valve surgeries presenting with syncope and dyspnea. Given her complex medical history and recurrent conduction issues, the Micra pacemaker was chosen. Despite initial resistance, successful deployment was achieved at the lower septum with acceptable pacing thresholds.</p><p><strong>Discussion: </strong>LPMs offer a promising alternative for patients with mechanical tricuspid valves, eliminating the risks associated with transvenous leads. The Micra system's minimally invasive approach and stable performance in these challenging cases suggest its potential viability in high-risk patients with complex valvular conditions.</p><p><strong>Conclusion: </strong>These cases demonstrate the feasibility of LPM implantation through mechanical tricuspid valves; however, given the associated risks, careful evaluation and meticulous procedural planning are essential before considering this approach.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-12-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142915758","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":"Left lateral pathway AVRT causing overdrive suppression of SA node and reversible cardiomyopathy: A case report.","authors":"Avinash Jeewooth, Atul Kaushik, Aparna Jaswal, Vikas Kumar","doi":"10.1016/j.ipej.2024.12.004","DOIUrl":"10.1016/j.ipej.2024.12.004","url":null,"abstract":"","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-12-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142898436","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":"Contribution of continuous intravenous lidocaine in managing congenital long QT syndrome with 2:1 atrioventricular block.","authors":"Deebaj Nadeem, Muhammad Mohsin, Faisal Qadir","doi":"10.1016/j.ipej.2024.12.003","DOIUrl":"10.1016/j.ipej.2024.12.003","url":null,"abstract":"<p><p>Congenital long QT syndrome (LQTS) is a rare hereditary cardiac disorder characterized by prolongation of the QT interval on electrocardiogram (ECG), predisposing affected individuals to life-threatening arrhythmias. We present a case of a newborn with congenital LQTS and 2:1 atrioventricular (AV) block who presented with bradycardia and QT prolongation. Continuous intravenous lidocaine infusion was initiated, because of hypoglycemia with beta-blockers, resulting in stabilization of AV conduction and prevention of malignant arrhythmias. This case underscores the potential utility of lidocaine as an adjunctive therapy in managing refractory arrhythmias in newborns with congenital LQTS and AV conduction abnormalities.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-12-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142872924","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":"Left internal jugular vein approach to right atrial appendage base implantation of the Aveir AR leadless pacemaker.","authors":"Howard Liu, Daniel Cortez","doi":"10.1016/j.ipej.2024.11.004","DOIUrl":"https://doi.org/10.1016/j.ipej.2024.11.004","url":null,"abstract":"<p><strong>Introduction: </strong>There is no prior report of an Aveir leadless pacemaker implantation into the atrial appendage via the internal jugular vein.</p><p><strong>Case: </strong>A 44-year-old female patient with history of multiple ablations for sinus node dysfunction presented with symptomatic bradycardia. The patient had femoral veins <9mm, chronic pain at the femoral vein insertion sites, as well as a recent car accident with persistent leg pain due to femoral fractures. Placement of a leadless pacemaker was decided based on patient discretion. An Abbott Aveir AR leadless pacemaker was implanted via left internal jugular vein access without complication. Post device implantation showed threshold of 0.75V @0.4 ms, impedance of 340 Ω, Pwave of 4.4 mV. Six-month follow-up demonstrated a threshold of 0.5 V @0.2 milliseconds, impedance of 300 Ω and Pwave of 7.2 mV with 92 % pacing and predicted longevity of 12.7 years.</p><p><strong>Discussion: </strong>The follow-up showed no complications in the patient. A similar approach may be feasible for other patients needing atrial leadless pacing, in which the transfemoral approach is not preferred.</p><p><strong>Conclusion: </strong>Implantation of the Aveir AR leadless pacemaker into the right atrial appendage is feasible via the left internal jugular vein.</p>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":" ","pages":""},"PeriodicalIF":0.0,"publicationDate":"2024-12-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142814271","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}