{"title":"Long- and short-term outcomes after transvenous lead extraction in a large single-centre patient cohort using the clinical frailty scale as a risk assessment tool","authors":"","doi":"10.1016/j.ipej.2024.07.001","DOIUrl":"10.1016/j.ipej.2024.07.001","url":null,"abstract":"<div><h3>Background and aims</h3><div>The rate of cardiac implantable electronic device (CIED) implantations and the need for transvenous lead extraction (TLE) are growing worldwide. This study examined a large Swedish cohort with the aim of identifying possible predictors of post-TLE mortality with special focus on systemic infection patients and frailty.</div></div><div><h3>Methods</h3><div>This was a single centre study. Records of patients undergoing TLE between 2010 and 2018 were analysed. Statistical analyses were conducted to compare baseline characteristics of patients with different indications and identify risk factors of 30-day and 1-year mortality.</div></div><div><h3>Results</h3><div>A total of 893 patients were identified. Local infection was the dominant indication and pacemaker was the most common CIED. The mean age was 65 ± 16 years, 73 % were male and median follow-up was 3.9 years. Heart failure was the most common comorbidity. Patients with systemic infection were significantly older, frailer and had significantly higher levels of comorbidities. 30-day mortality and 1-year mortality rates were 2.5 % and 9.9 %, respectively. Systemic infection and chronic kidney disease (CKD) were independently associated with 30-day and 1-year mortality. Clinical frailty scale (CFS) 5–7 correlated independently with 1-year mortality in the entire cohort and specifically in systemic infection patients. CKD, cardiac resynchronization therapy and CFS 5–7 were significant risk factors for long-term mortality (death >1 year after TLE) in multivariable analysis.</div></div><div><h3>Conclusions</h3><div>Systemic infection, kidney failure in addition to the novel parameter of frailty were associated with post-TLE all-cause mortality. These risk factors should be considered during pre-procedure risk stratification to improve post-TLE outcomes.</div></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 263-270"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141591609","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Speech induced atrial tachycardia – Case report and review of literature","authors":"","doi":"10.1016/j.ipej.2024.06.009","DOIUrl":"10.1016/j.ipej.2024.06.009","url":null,"abstract":"<div><div>Speech induced atrial tachycardia is peculiar and an extremely uncommon clinical situation. Though the exact patho-mechanism for such an association cannot be ascertained. It is postulated to be caused by cardiac autonomic modulation by vagal innervation around the ganglionated plexus (GP) of the heart. We hereby present a unique case of atrial tachycardia which could be induced only by speech and was successfully mapped and ablated on to the floor of left atrium (LA), which is a possible site of posteromedial left atrial ganglionated plexus.</div></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 295-297"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Real-time Ripple technique: A case report on Ripple map for real-time identification of conduction gaps without first-pass pulmonary vein isolation","authors":"","doi":"10.1016/j.ipej.2024.06.008","DOIUrl":"10.1016/j.ipej.2024.06.008","url":null,"abstract":"<div><div>This paper presents a novel approach to gap mapping in pulmonary vein isolation (PVI) for atrial fibrillation (AF) treatment, utilizing the real-time Ripple (RR) technique. Radiofrequency (RF) catheter ablation, particularly encircling PVI, is a common intervention for AF. Identifying left atrium–pulmonary vein conduction gaps is crucial for achieving PVI with minimal additional ablation if first-pass PVI is unsuccessful. However, identifying conduction gaps can be relatively challenging, often necessitating manual electrocardiogram reannotation due to the limitations of local activation time (LAT) maps. In the case of a 63-year-old patient with drug-resistant symptomatic persistent AF, the RR technique was utilized to identify conduction gaps during RF ablation. The technique involved pausing fast anatomical mapping (FAM), activating Ripple map (RM) feature on the CARTO 3 system and acquiring points with an ultrahigh-resolution mapping catheter. This approach revealed that the actual site of earliest activation differs from the LAT map indication, enabling successful PVI.</div><div>The RM feature's capability to reflect actual excitation propagation without reliance on map annotations was crucial for precise conduction gap identification, overcoming inter-operator variability and inaccuracies of conventional methods. The RR technique not only facilitated real-time analysis during gap mapping but also significantly reduced the procedure time, minimizing potential complications.</div><div>This case report highlights the efficacy of the RR technique in real-time gap mapping, demonstrating its value in cases where first-pass PVI is unsuccessful. The integration of this technique into PVI procedures can enhance both the accuracy and efficiency of catheter ablation for AF.</div></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 291-294"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141471279","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Left conduction system pacing – An Ocean of opportunity","authors":"Shunmuga Sundaram Ponnusamy, Pugazhendhi Vijayaraman","doi":"10.1016/j.ipej.2024.09.008","DOIUrl":"10.1016/j.ipej.2024.09.008","url":null,"abstract":"","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 247-248"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142297256","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Longitudinal reduction in fluoroscopy with continued use of 3-dimensional electroanatomic mapping systems in catheter ablation of supraventricular tachycardia – then and now","authors":"","doi":"10.1016/j.ipej.2024.06.010","DOIUrl":"10.1016/j.ipej.2024.06.010","url":null,"abstract":"<div><h3>Background</h3><div>Catheter ablation is a first-line treatment for symptomatic, recurrent supraventricular tachycardia (SVT). This study aims to demonstrate if 3D-electroanatomic mapping (EAM) during SVT ablation reduces fluoroscopy time (FT) and determine if further reductions in FT are observed longitudinally.</div></div><div><h3>Methods</h3><div>All cases of SVT ablation between May 2011–May 2022 at a single tertiary centre were prospectively recruited. FT between the cohorts with and without EAM were compared. Within the EAM subset, the trend of FT across the years was analysed.</div></div><div><h3>Results</h3><div>There were 1758 cases included, 563 without EAM, 1195 with EAM. EAM was associated with a longer procedure time (mean + 8.8 min, p = 0.001), but with mean reductions in FT and dose area product (DAP) by 19.6 min and 18 621 mGy*cm2 respectively (p < 0.001). There was comparable efficacy without any increase in complication rates. Over time (2011–2022), further reduction in FT of 0.9 min year on year was observed (p = 0.001). Between 2011 and 2017, there was a significant reduction in FT of 1.1 min year on year (p = 0.019), which was not observed from 2017 onwards (p = 0.061). The greatest reduction in FT was after the first year of adoption.</div></div><div><h3>Conclusion</h3><div>EAM in SVT ablation reduces fluoroscopy use. FT was initially observed to reduce further over time before plateauing, likely due to increased operator experience. While there is increased interest in zero fluoroscopy SVT ablation, complementary use of fluoroscopy may still be necessary in complex cases.</div></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 249-254"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141477564","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Analysis of intracardiac electrocardiogram during ill-sustained tachycardia – Door to a successful troubleshooting of ‘unnecessary’ defibrillator discharge","authors":"Debabrata Bera , Kuntal Bhattacharyya , Suchit Majumder , Rakesh Sarkar","doi":"10.1016/j.ipej.2024.07.004","DOIUrl":"10.1016/j.ipej.2024.07.004","url":null,"abstract":"<div><div>A 50-year-old gentleman with old anterior wall myocardial infarction with implantable cardioverter defibrillator (ICD, Abbott Medical, Fortify ST VR 1235-40) presented with recurrent appropriate ICD shock. The ICD stored EGM indicated a possibility of supraventricular tachycardia (SVT) rather than ventricular tachycardia (VT) when the morphology match was found high. Bundle brunch re-entry (BBR) VT was another differential. An EP study conducted on antiarrhythmic drugs (AAD) induced reproducible but only ill-sustained tachycardia too short to perform any SVT maneuvers during tachycardia. However, critical analysis of the tachycardia electrograms suggested atypical AVNRT as the most likely mechanism. The other differentials were atrial tachycardia (AT) and BBR VT. Manoeuvres during sinus rhythm and ventricular pacing excluded other diagnosis. A single point radiofrequency ablation (RFA) near the SP region cured the arrhythmia. The reason for misclassification of SVT as VT was also sought for. It was found that the shocks were received due to fulfilment of 2/3 criteria (sudden onset and regular tachycardia). Hence, he received therapy despite an appropriate morphology match favouring SVT. This is one of the known limitations of ICDs where regular SVTs (AVNRT/AVRT or AT) may receive inappropriate ICD therapies. After slow pathway modification there was no further recurrence of either SVT or VT; hence, a substrate modification was deferred.</div></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 303-307"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141890280","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Giovanni Domenico Ciriello , Davide Sorice , Antonio Orlando , Giovanni Papaccioli , Diego Colonna , Anna Correra , Emanuele Romeo , Raffaella Esposito , Marina De Marco , Veronica Diana , Mario Giordano , Ludovica Spinelli Barrile , Maria Giovanna Russo , Berardo Sarubbi
{"title":"Antiarrhythmic therapy for narrow QRS supraventricular tachyarrhythmias in newborns and infants in the first year of life: Potent tools to be handled with care","authors":"Giovanni Domenico Ciriello , Davide Sorice , Antonio Orlando , Giovanni Papaccioli , Diego Colonna , Anna Correra , Emanuele Romeo , Raffaella Esposito , Marina De Marco , Veronica Diana , Mario Giordano , Ludovica Spinelli Barrile , Maria Giovanna Russo , Berardo Sarubbi","doi":"10.1016/j.ipej.2024.07.005","DOIUrl":"10.1016/j.ipej.2024.07.005","url":null,"abstract":"<div><div>Supraventricular tachyarrhythmias pose a significant challenge in neonates and infants, particularly within the first year of life, where prompt and effective management is crucial. By synthesizing available evidence and clinical experience, this review aims to provide a comprehensive overview of antiarrhythmic therapy in this vulnerable population, with a focus on narrow QRS supraventricular tachyarrhythmias. This review examines the current understanding of supraventricular tachyarrhythmia management and discusses the challenges associated with antiarrhythmic therapy in newborns and infants during the critical first year of life, evaluating the efficacy and safety of various antiarrhythmic agents commonly utilized in this population, including dosing considerations, adverse effects, and strategies for acute management and prophylactic long-term antiarrhythmic treatment.</div></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 271-281"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141735216","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Arrhythmogenic or dilated or desmoplakin cardiomyopathy? A challenging case managed by our multidisciplinary cardiogenetic team","authors":"","doi":"10.1016/j.ipej.2024.07.002","DOIUrl":"10.1016/j.ipej.2024.07.002","url":null,"abstract":"<div><div>Arrhythmogenic cardiomyopathy (ACM), characterized by fibro or fibrofatty infiltration of the myocardium with a predominant arrhythmic presentation, is a genetically mediated cause of sudden cardiac death in the young and athletic individuals. We report a case of a severe form of biventricular ACM in a middle-aged man with a family history of cardiomyopathy-related young death. The proband was identified to harbor two novel mutations in the <em>DES</em> and <em>DOLK</em> genes and was managed comprehensively with a multidisciplinary team approach. This report reinforces the need for a dedicated cardiovascular genetics program as well as a population-specific genetic database in developing countries.</div></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 298-302"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141591580","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
{"title":"Feasibility of using chest strap and dry electrode system for longer term cardiac arrhythmia monitoring: Results from a pilot observational study","authors":"Daljeet Kaur Saggu , Madappa Nagamalesh Udigala , Shantanu Sarkar , Arunkumar Sathiyamoorthy , Satyaprakash Dash , V.R. Mohan P , Vinayakrishnan Rajan , Narasimahan Calambur","doi":"10.1016/j.ipej.2024.08.003","DOIUrl":"10.1016/j.ipej.2024.08.003","url":null,"abstract":"<div><h3>Background and aim</h3><div>Cardiac arrhythmia diagnostic yield improves with increased duration of monitoring. We investigated patient comfort, diagnostic quality of ECG, and arrhythmia diagnostic yield using a single lead longer term external cardiac monitor (ECM).</div></div><div><h3>Methods</h3><div>The observational ECM feasibility study enrolled patients with increased risk of cardiac arrhythmia. The ECM investigational prototype was designed using a chest strap with dry electrodes connected to module capable of triggered loop recording of ECG, and automatic detection of arrhythmia. In group-A of study (24-h inpatient), patients wore ECM and Holter that recorded ECG from the ECM and adhesive electrodes. In group-B of study (12-weeks ambulatory), at monthly follow-ups patients filled out a comfort survey and device stored arrhythmia episodes were reviewed.</div></div><div><h3>Results</h3><div>The study enrolled 34 patients (38 % females, average age 57.5 years, 65 % had palpitations, 12 % had syncope). Diagnostic quality ECG was recorded on 76.5 % of the monitoring duration in 12 of 20 patients with reviewable data in group-A, with motion artifacts causing loss in ECG signal for 18.7 % of the time. In 14 patients in group-B, 94.9 % of the survey responses indicated that ECM was comfortable to wear. Cardiac arrhythmia was observed in 4 of 17 patients (24 %) in group-A and 9 of 14 patients (64 %) in group-B in device recorded episodes. All ECM detected pause and tachycardia were inappropriate detections due to motion artifacts and temporary device removal.</div></div><div><h3>Conclusion</h3><div>The chest strap-based ECM device was mostly comfortable to wear and recorded diagnostic quality ECG in three-fourth of monitoring period. Cardiac arrhythmia was observed in 64 % of patients over 3-month monitoring along with large number of motion artifact induced inappropriate detections.</div></div>","PeriodicalId":35900,"journal":{"name":"Indian Pacing and Electrophysiology Journal","volume":"24 5","pages":"Pages 282-290"},"PeriodicalIF":0.0,"publicationDate":"2024-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142056737","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}