Rohin K Reddy, James P Howard, Yousif Ahmad, Matthew J Shun-Shin, Florentina A Simader, Alejandra A Miyazawa, Keenan Saleh, Akriti Naraen, Jack W Samways, George Katritsis, Jagdeep S Mohal, Nandita Kaza, Bradley Porter, Daniel Keene, Nicholas Wf Linton, Darrel P Francis, Zachary I Whinnett, Vishal Luther, Prapa Kanagaratnam, Ahran D Arnold
{"title":"Catheter Ablation for Ventricular Tachycardia After MI: A Reconstructed Individual Patient Data Meta-analysis of Randomised Controlled Trials.","authors":"Rohin K Reddy, James P Howard, Yousif Ahmad, Matthew J Shun-Shin, Florentina A Simader, Alejandra A Miyazawa, Keenan Saleh, Akriti Naraen, Jack W Samways, George Katritsis, Jagdeep S Mohal, Nandita Kaza, Bradley Porter, Daniel Keene, Nicholas Wf Linton, Darrel P Francis, Zachary I Whinnett, Vishal Luther, Prapa Kanagaratnam, Ahran D Arnold","doi":"10.15420/aer.2023.07","DOIUrl":"10.15420/aer.2023.07","url":null,"abstract":"<p><strong>Background: </strong>The prognostic impact of ventricular tachycardia (VT) catheter ablation is an important outstanding research question. We undertook a reconstructed individual patient data meta-analysis of randomised controlled trials comparing ablation to medical therapy in patients developing VT after MI.</p><p><strong>Methods: </strong>We systematically identified all trials comparing catheter ablation to medical therapy in patients with VT and prior MI. The prespecified primary endpoint was reconstructed individual patient assessment of all-cause mortality. Prespecified secondary endpoints included trial-level assessment of all-cause mortality, VT recurrence or defibrillator shocks and all-cause hospitalisations. Prespecified subgroup analysis was performed for ablation approaches involving only substrate modification without VT activation mapping. Sensitivity analyses were performed depending on the proportion of patients with prior MI included.</p><p><strong>Results: </strong>Eight trials, recruiting a total of 874 patients, were included. Of these 874 patients, 430 were randomised to catheter ablation and 444 were randomised to medical therapy. Catheter ablation reduced all-cause mortality compared with medical therapy when synthesising individual patient data (HR 0.63; 95% CI [0.41-0.96]; p=0.03), but not in trial-level analysis (RR 0.91; 95% CI [0.67-1.23]; p=0.53; I<sup>2</sup>=0%). Catheter ablation significantly reduced VT recurrence, defibrillator shocks and hospitalisations compared with medical therapy. Sensitivity analyses were consistent with the primary analyses.</p><p><strong>Conclusion: </strong>In patients with postinfarct VT, catheter ablation reduces mortality.</p>","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e26"},"PeriodicalIF":2.6,"publicationDate":"2023-11-22","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10731517/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"138827911","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":"Septal and Conduction System Pacing.","authors":"Demosthenes G Katritsis, Hugh Calkins","doi":"10.15420/aer.2023.14","DOIUrl":"10.15420/aer.2023.14","url":null,"abstract":"","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e25"},"PeriodicalIF":2.6,"publicationDate":"2023-09-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/61/17/aer-12-e25.PMC10583155.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49673778","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":"Heart Failure and Cardiac Device Therapy: A Review of Current National Institute of Health and Care Excellence and European Society of Cardiology Guidelines.","authors":"Akriti Naraen, Dileep Duvva, Archana Rao","doi":"10.15420/aer.2022.35","DOIUrl":"10.15420/aer.2022.35","url":null,"abstract":"<p><p>Guidelines help clinicians to deliver high-quality care with therapies based on up-to-date evidence. There has been significant progress in the management of heart failure with regards to both medication and cardiac device therapy. These advances have been incorporated into national and international guidelines with varying degrees of success. This article reviews current guidance from the National Institute of Health and Care Excellence in the UK and compares this with European Society of Cardiology guidelines, and evaluates how differences between them may impact on clinical practice.</p>","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e21"},"PeriodicalIF":2.6,"publicationDate":"2023-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/f4/d0/aer-12-e21.PMC10345955.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9826439","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":"Clinical Pathways Guided by Remotely Monitoring Cardiac Device Data: The Future of Device Heart Failure Management?","authors":"Joanne K Taylor, Fozia Zahir Ahmed","doi":"10.15420/aer.2022.13","DOIUrl":"10.15420/aer.2022.13","url":null,"abstract":"<p><p>Research examining the utility of cardiac device data to manage patients with heart failure (HF) is rapidly evolving. COVID-19 has reignited interest in remote monitoring, with manufacturers each developing and testing new ways to detect acute HF episodes, risk stratify patients and support self-care. As standalone diagnostic tools, individual physiological metrics and algorithm-based systems have demonstrated utility in predicting future events, but the integration of remote monitoring data with existing clinical care pathways for device HF patients is not well described. This narrative review provides an overview of device-based HF diagnostics available to care providers in the UK, and describes the current state of play with regard to how these systems fit in with current HF management.</p>","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e15"},"PeriodicalIF":3.0,"publicationDate":"2023-04-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/cc/88/aer-12-e15.PMC10326671.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9812528","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}
Nadeev Wijesuriya, Felicity De Vere, Vishal Mehta, Steven Niederer, Christopher A Rinaldi, Jonathan M Behar
{"title":"Leadless Pacing: Therapy, Challenges and Novelties.","authors":"Nadeev Wijesuriya, Felicity De Vere, Vishal Mehta, Steven Niederer, Christopher A Rinaldi, Jonathan M Behar","doi":"10.15420/aer.2022.41","DOIUrl":"10.15420/aer.2022.41","url":null,"abstract":"<p><p>Leadless pacing is a rapidly growing field. Initially designed to provide right ventricular pacing for those who were contraindicated for conventional devices, the technology is growing to explore the potential benefit of avoiding long-term transvenous leads in any patient who requires pacing. In this review, we first examine the safety and performance of leadless pacing devices. We then review the evidence for their use in special populations, such as patients with high risk of device infection, patients on haemodialysis, and patients with vasovagal syncope who represent a younger population who may wish to avoid transvenous pacing. We also summarise the evidence for leadless cardiac resynchronisation therapy and conduction system pacing and discuss the challenges of managing issues, such as system revisions, end of battery life and extractions. Finally, we discuss future directions in the field, such as completely leadless cardiac resynchronisation therapy-defibrillator devices and whether leadless pacing has the potential to become a first-line therapy in the near future.</p>","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e09"},"PeriodicalIF":2.6,"publicationDate":"2023-04-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/04/44/aer-12-e09.PMC10326662.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9815173","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}
Yaacoub Chahine, Matthew J Magoon, Bahetihazi Maidu, Juan C Del Álamo, Patrick M Boyle, Nazem Akoum
{"title":"Machine Learning and the Conundrum of Stroke Risk Prediction.","authors":"Yaacoub Chahine, Matthew J Magoon, Bahetihazi Maidu, Juan C Del Álamo, Patrick M Boyle, Nazem Akoum","doi":"10.15420/aer.2022.34","DOIUrl":"10.15420/aer.2022.34","url":null,"abstract":"<p><p>Stroke is a leading cause of death worldwide. With escalating healthcare costs, early non-invasive stroke risk stratification is vital. The current paradigm of stroke risk assessment and mitigation is focused on clinical risk factors and comorbidities. Standard algorithms predict risk using regression-based statistical associations, which, while useful and easy to use, have moderate predictive accuracy. This review summarises recent efforts to deploy machine learning (ML) to predict stroke risk and enrich the understanding of the mechanisms underlying stroke. The surveyed body of literature includes studies comparing ML algorithms with conventional statistical models for predicting cardiovascular disease and, in particular, different stroke subtypes. Another avenue of research explored is ML as a means of enriching multiscale computational modelling, which holds great promise for revealing thrombogenesis mechanisms. Overall, ML offers a new approach to stroke risk stratification that accounts for subtle physiologic variants between patients, potentially leading to more reliable and personalised predictions than standard regression-based statistical associations.</p>","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e07"},"PeriodicalIF":2.6,"publicationDate":"2023-04-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/e5/9f/aer-12-e07.PMC10326666.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9815174","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":"Radiation-associated Arrhythmias: Putative Pathophysiological Mechanisms, Prevalence, Screening and Management Strategies.","authors":"Rohil Bedi, Ali Ahmad, Piotr Horbal, Philip L Mar","doi":"10.15420/aer.2022.44","DOIUrl":"https://doi.org/10.15420/aer.2022.44","url":null,"abstract":"<p><p>Radiation-associated cardiovascular disease, an increasingly recognised disease process, is a significant adverse effect of radiation therapy for common malignancies that involve the chest, and include lymphomas, lung, mediastinal and breast cancers. Two factors contribute to the increasing incidence of radiation-associated cardiovascular disease: advances in malignancy detection and the improved survival of cancer patients, by which many symptoms of radiation-associated cardiovascular disease, specifically radiation-associated arrhythmias, present years and/or decades following initial radiotherapy. We present a focused overview of the currently understood pathophysiology, prevalence and management strategies of radiation-associated arrhythmias, which include bradyarrhythmias, tachyarrhythmias and autonomic dysfunction.</p>","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e24"},"PeriodicalIF":3.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/a2/48/aer-12-e24.PMC10481379.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10189110","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}
Ahmed M Al-Kaisey, William Figgett, Joshua Hawson, Fabienne Mackay, Stephen A Joseph, Jonathan M Kalman
{"title":"Gut Microbiota and Atrial Fibrillation: Pathogenesis, Mechanisms and Therapies.","authors":"Ahmed M Al-Kaisey, William Figgett, Joshua Hawson, Fabienne Mackay, Stephen A Joseph, Jonathan M Kalman","doi":"10.15420/aer.2022.33","DOIUrl":"https://doi.org/10.15420/aer.2022.33","url":null,"abstract":"<p><p>Over the past decade there has been an interest in understanding the role of gut microbiota in the pathogenesis of AF. A number of studies have linked the gut microbiota to the occurrence of traditional AF risk factors such as hypertension and obesity. However, it remains unclear whether gut dysbiosis has a direct effect on arrhythmogenesis in AF. This article describes the current understanding of the effect of gut dysbiosis and associated metabolites on AF. In addition, current therapeutic strategies and future directions are discussed.</p>","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e14"},"PeriodicalIF":3.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/6e/5c/aer-12-e14.PMC10326663.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9809196","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":"Artificial Intelligence in Medicine: Neither Intelligent nor Artificial?","authors":"Demosthenes G Katritsis","doi":"10.15420/aer.2023.01","DOIUrl":"https://doi.org/10.15420/aer.2023.01","url":null,"abstract":"","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e13"},"PeriodicalIF":3.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/cb/20/aer-12-e13.PMC10326659.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"9812535","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}
Andre Briosa E Gala, Michael Timothy Brian Pope, Milena Leo, Alexander James Sharp, Victor Tsoi, John Paisey, Nick Curzen, Timothy Rider Betts
{"title":"'Pill-in-the-pocket' Oral Anticoagulation Guided by Daily Rhythm Monitoring for Stroke Prevention in Patients with AF: A Systematic Review and Meta-analysis.","authors":"Andre Briosa E Gala, Michael Timothy Brian Pope, Milena Leo, Alexander James Sharp, Victor Tsoi, John Paisey, Nick Curzen, Timothy Rider Betts","doi":"10.15420/aer.2022.22","DOIUrl":"https://doi.org/10.15420/aer.2022.22","url":null,"abstract":"<p><strong>Aims: </strong>In patients with a low AF burden and long periods of sinus rhythm, 'pill-in-the-pocket' oral anticoagulation (OAC) may, taken as needed in response to AF episodes, offer the same thromboembolic protection as continuous, life-long OAC, while reducing bleeding complications at the same time. The purpose of this study is to systematically summarise available evidence pertaining to the feasibility, safety and efficacy of pill-in-the-pocket OAC.</p><p><strong>Methods: </strong>Medline and Embase were searched from inception to July 2022 for studies adopting a pill-in-the-pocket OAC strategy in AF patients guided by daily rhythm monitoring (PROSPERO/CRD42020209564). Outcomes of interest were extracted and event rates per patient-years of follow-up were calculated. A random effects model was used for pooled estimates.</p><p><strong>Results: </strong>Eight studies were included (711 patients). Daily rhythm monitoring was continuous in six studies and intermittent in two (pulse checks or smartphone single-lead electrocardiograms were used). Anticoagulation criteria varied across studies, reflecting the uncertainty regarding the AF burden that warrants anticoagulation. The mean time from AF meeting OAC criteria to its initiation was not reported. Adopting pill-in-the-pocket OAC led to 390 (54.7%) patients stopping OAC, 85 (12.0%) patients taking pill-in-the-pocket OAC and 237 (33.3%) patients remaining on or returning to continuous OAC. Overall, annualised ischaemic stroke and major bleeding rates per patient-year of follow-up were low at 0.005 (95% CI [0.002-0.012]) and 0.024 (95% CI [0.013-0.043]), respectively.</p><p><strong>Conclusion: </strong>Current evidence, although encouraging, is insufficient to inform practice. Additional studies are required to improve our understanding of the relationships between AF burden and thromboembolic risk to help define anticoagulation criteria and appropriate monitoring strategies.</p>","PeriodicalId":8412,"journal":{"name":"Arrhythmia & Electrophysiology Review","volume":"12 ","pages":"e05"},"PeriodicalIF":3.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://ftp.ncbi.nlm.nih.gov/pub/pmc/oa_pdf/af/03/aer-12-e05.PMC10433111.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"10049408","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}