Nikhil Ahluwalia, Shohreh Honarbakhsh, Hakam Abbass, Abhishek Joshi, Anthony W C Chow, Mehul Dhinoja, Steffen Erhard Petersen, Ross J Hunter, Guy Lloyd, Richard J Schilling
{"title":"心房纤颤性心肌病患者的特征分析。","authors":"Nikhil Ahluwalia, Shohreh Honarbakhsh, Hakam Abbass, Abhishek Joshi, Anthony W C Chow, Mehul Dhinoja, Steffen Erhard Petersen, Ross J Hunter, Guy Lloyd, Richard J Schilling","doi":"10.1136/openhrt-2024-002955","DOIUrl":null,"url":null,"abstract":"<p><strong>Introduction: </strong>Atrial fibrillation (AF)-induced cardiomyopathy (AIC) is retrospectively defined after normalisation of left ventricular ejection fraction (LVEF) in sinus rhythm. It is unclear why some patients develop AIC.</p><p><strong>Hypothesis: </strong>Patients with AIC have a subtle cardiomyopathic process that precedes their AF-mediated LVEF reduction. Detailed assessment of cardiac function after successful catheter ablation will reveal this.</p><p><strong>Objective: </strong>To evaluate the utility of measures to identify cardiomyopathic features that persist after LVEF normalisation in AIC.</p><p><strong>Methods: </strong>Patients with rate-controlled persistent AF and LVEF<50% undergoing catheter ablation (CA) were prospectively evaluated using echocardiography, cardio-pulmonary exercise testing and serum N-terminal pro b-type natriuretic peptide (NT-proBNP) at baseline and 6 months after CA. Participants with AIC, (LVEF recovery (≥50%) and no other cause for cardiac dysfunction) were evaluated using left ventricular (LV) longitudinal strain and left atrial (LA) reservoir strain (LARS). Changes in peak oxygen consumption and the minute ventilation/carbon dioxide production slope were measured as markers of functional capacity and ventilatory inefficiency. A control group of patients with persistent AF with preserved LVEF were also enrolled.</p><p><strong>Results: </strong>34/41 (82.9%) participants recovered LVEF in sinus rhythm; defined as AIC. NT-proBNP levels were elevated in 18 (52.9%), and 16 reported ongoing heart failure (HF) symptoms. 10 (29.4%) had no improvement in functional capacity, and seven (20.6%) showed persistent ventilatory inefficiency. 20 (58.8%) had impaired global LV longitudinal strain with a relative apical sparing pattern. Nine (26.5%) had impaired LARS. There was an overlap of these abnormalities. 32 (94.1%) demonstrated at least one, 17 (50.0%) having no cardiovascular risk factors. Patients with preserved LVEF during persistent AF had similar demographics but a lower burden of short R-R intervals (<660 ms) on Holter monitoring.</p><p><strong>Discussion: </strong>Abnormal structural, metabolic and HF biomarkers are seen in patients with AIC in sinus rhythm. These features may represent a precedent subtle cardiomyopathic process predisposing them to left ventricular systolic dysfunction in AF.</p><p><strong>Trial registration number: </strong>NCT04987723.</p>","PeriodicalId":19505,"journal":{"name":"Open Heart","volume":"11 2","pages":""},"PeriodicalIF":2.8000,"publicationDate":"2024-11-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11603700/pdf/","citationCount":"0","resultStr":"{\"title\":\"Characterisation of patients who develop atrial fibrillation-induced cardiomyopathy.\",\"authors\":\"Nikhil Ahluwalia, Shohreh Honarbakhsh, Hakam Abbass, Abhishek Joshi, Anthony W C Chow, Mehul Dhinoja, Steffen Erhard Petersen, Ross J Hunter, Guy Lloyd, Richard J Schilling\",\"doi\":\"10.1136/openhrt-2024-002955\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p><strong>Introduction: </strong>Atrial fibrillation (AF)-induced cardiomyopathy (AIC) is retrospectively defined after normalisation of left ventricular ejection fraction (LVEF) in sinus rhythm. It is unclear why some patients develop AIC.</p><p><strong>Hypothesis: </strong>Patients with AIC have a subtle cardiomyopathic process that precedes their AF-mediated LVEF reduction. Detailed assessment of cardiac function after successful catheter ablation will reveal this.</p><p><strong>Objective: </strong>To evaluate the utility of measures to identify cardiomyopathic features that persist after LVEF normalisation in AIC.</p><p><strong>Methods: </strong>Patients with rate-controlled persistent AF and LVEF<50% undergoing catheter ablation (CA) were prospectively evaluated using echocardiography, cardio-pulmonary exercise testing and serum N-terminal pro b-type natriuretic peptide (NT-proBNP) at baseline and 6 months after CA. Participants with AIC, (LVEF recovery (≥50%) and no other cause for cardiac dysfunction) were evaluated using left ventricular (LV) longitudinal strain and left atrial (LA) reservoir strain (LARS). Changes in peak oxygen consumption and the minute ventilation/carbon dioxide production slope were measured as markers of functional capacity and ventilatory inefficiency. A control group of patients with persistent AF with preserved LVEF were also enrolled.</p><p><strong>Results: </strong>34/41 (82.9%) participants recovered LVEF in sinus rhythm; defined as AIC. NT-proBNP levels were elevated in 18 (52.9%), and 16 reported ongoing heart failure (HF) symptoms. 10 (29.4%) had no improvement in functional capacity, and seven (20.6%) showed persistent ventilatory inefficiency. 20 (58.8%) had impaired global LV longitudinal strain with a relative apical sparing pattern. Nine (26.5%) had impaired LARS. There was an overlap of these abnormalities. 32 (94.1%) demonstrated at least one, 17 (50.0%) having no cardiovascular risk factors. Patients with preserved LVEF during persistent AF had similar demographics but a lower burden of short R-R intervals (<660 ms) on Holter monitoring.</p><p><strong>Discussion: </strong>Abnormal structural, metabolic and HF biomarkers are seen in patients with AIC in sinus rhythm. These features may represent a precedent subtle cardiomyopathic process predisposing them to left ventricular systolic dysfunction in AF.</p><p><strong>Trial registration number: </strong>NCT04987723.</p>\",\"PeriodicalId\":19505,\"journal\":{\"name\":\"Open Heart\",\"volume\":\"11 2\",\"pages\":\"\"},\"PeriodicalIF\":2.8000,\"publicationDate\":\"2024-11-27\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11603700/pdf/\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Open Heart\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1136/openhrt-2024-002955\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q2\",\"JCRName\":\"CARDIAC & CARDIOVASCULAR SYSTEMS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Open Heart","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1136/openhrt-2024-002955","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q2","JCRName":"CARDIAC & CARDIOVASCULAR SYSTEMS","Score":null,"Total":0}
Characterisation of patients who develop atrial fibrillation-induced cardiomyopathy.
Introduction: Atrial fibrillation (AF)-induced cardiomyopathy (AIC) is retrospectively defined after normalisation of left ventricular ejection fraction (LVEF) in sinus rhythm. It is unclear why some patients develop AIC.
Hypothesis: Patients with AIC have a subtle cardiomyopathic process that precedes their AF-mediated LVEF reduction. Detailed assessment of cardiac function after successful catheter ablation will reveal this.
Objective: To evaluate the utility of measures to identify cardiomyopathic features that persist after LVEF normalisation in AIC.
Methods: Patients with rate-controlled persistent AF and LVEF<50% undergoing catheter ablation (CA) were prospectively evaluated using echocardiography, cardio-pulmonary exercise testing and serum N-terminal pro b-type natriuretic peptide (NT-proBNP) at baseline and 6 months after CA. Participants with AIC, (LVEF recovery (≥50%) and no other cause for cardiac dysfunction) were evaluated using left ventricular (LV) longitudinal strain and left atrial (LA) reservoir strain (LARS). Changes in peak oxygen consumption and the minute ventilation/carbon dioxide production slope were measured as markers of functional capacity and ventilatory inefficiency. A control group of patients with persistent AF with preserved LVEF were also enrolled.
Results: 34/41 (82.9%) participants recovered LVEF in sinus rhythm; defined as AIC. NT-proBNP levels were elevated in 18 (52.9%), and 16 reported ongoing heart failure (HF) symptoms. 10 (29.4%) had no improvement in functional capacity, and seven (20.6%) showed persistent ventilatory inefficiency. 20 (58.8%) had impaired global LV longitudinal strain with a relative apical sparing pattern. Nine (26.5%) had impaired LARS. There was an overlap of these abnormalities. 32 (94.1%) demonstrated at least one, 17 (50.0%) having no cardiovascular risk factors. Patients with preserved LVEF during persistent AF had similar demographics but a lower burden of short R-R intervals (<660 ms) on Holter monitoring.
Discussion: Abnormal structural, metabolic and HF biomarkers are seen in patients with AIC in sinus rhythm. These features may represent a precedent subtle cardiomyopathic process predisposing them to left ventricular systolic dysfunction in AF.
期刊介绍：
Open Heart is an online-only, open access cardiology journal that aims to be “open” in many ways: open access (free access for all readers), open peer review (unblinded peer review) and open data (data sharing is encouraged). The goal is to ensure maximum transparency and maximum impact on research progress and patient care. The journal is dedicated to publishing high quality, peer reviewed medical research in all disciplines and therapeutic areas of cardiovascular medicine. Research is published across all study phases and designs, from study protocols to phase I trials to meta-analyses, including small or specialist studies. Opinionated discussions on controversial topics are welcomed. Open Heart aims to operate a fast submission and review process with continuous publication online, to ensure timely, up-to-date research is available worldwide. The journal adheres to a rigorous and transparent peer review process, and all articles go through a statistical assessment to ensure robustness of the analyses. Open Heart is an official journal of the British Cardiovascular Society.
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