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Makkar N, Namboodiri N. Heart failure and atrial fibrillation: To freeze or to burn, that's the question! Indian Pacing Electrophysiol J 2024; 24:130-132. [PMID: 38734139 PMCID: PMC11143714 DOI: 10.1016/j.ipej.2024.05.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 05/13/2024] Open
Affiliation(s)
- Nayani Makkar
- Department of Cardiology, Sree Chitra Tirunal Institute of Medical Sciences and Technology, Thiruvananthapuram, Kerala, India
| | - Narayanan Namboodiri
- Department of Cardiology, Sree Chitra Tirunal Institute of Medical Sciences and Technology, Thiruvananthapuram, Kerala, India.
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Sha R, Baines O, Hayes A, Tompkins K, Kalla M, Holmes AP, O'Shea C, Pavlovic D. Impact of Obesity on Atrial Fibrillation Pathogenesis and Treatment Options. J Am Heart Assoc 2024; 13:e032277. [PMID: 38156451 PMCID: PMC10863823 DOI: 10.1161/jaha.123.032277] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 12/30/2023]
Abstract
Atrial fibrillation (AF) is the most common cardiac arrhythmia. AF increases the risk of stroke, heart failure, dementia, and hospitalization. Obesity significantly increases AF risk, both directly and indirectly, through related conditions, like hypertension, diabetes, and heart failure. Obesity-driven structural and electrical remodeling contribute to AF via several reported mechanisms, including adiposity, inflammation, fibrosis, oxidative stress, ion channel alterations, and autonomic dysfunction. In particular, expanding epicardial adipose tissue during obesity has been suggested as a key driver of AF via paracrine signaling and direct infiltration. Weight loss has been shown to reverse these changes and reduce AF risk and recurrence after ablation. However, studies on how obesity affects pharmacologic or interventional AF treatments are limited. In this review, we discuss mechanisms by which obesity mediates AF and treatment outcomes, aiming to provide insight into obesity-drug interactions and guide personalized treatment for this patient subgroup.
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Affiliation(s)
- Rina Sha
- Institute of Cardiovascular Sciences, University of BirminghamBirminghamUnited Kingdom
| | - Olivia Baines
- Institute of Cardiovascular Sciences, University of BirminghamBirminghamUnited Kingdom
| | - Abbie Hayes
- Institute of Cardiovascular Sciences, University of BirminghamBirminghamUnited Kingdom
| | - Katie Tompkins
- Institute of Cardiovascular Sciences, University of BirminghamBirminghamUnited Kingdom
| | - Manish Kalla
- Institute of Cardiovascular Sciences, University of BirminghamBirminghamUnited Kingdom
| | - Andrew P. Holmes
- Institute of Cardiovascular Sciences, University of BirminghamBirminghamUnited Kingdom
| | - Christopher O'Shea
- Institute of Cardiovascular Sciences, University of BirminghamBirminghamUnited Kingdom
| | - Davor Pavlovic
- Institute of Cardiovascular Sciences, University of BirminghamBirminghamUnited Kingdom
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Iwawaki T, Morishima I, Kanzaki Y, Morita Y, Watanabe N, Yoshioka N, Shibata N, Miyazawa H, Shimojo K, Yanagisawa S, Inden Y, Murohara T. Elevated liver fibrosis-4 index predicts recurrence after catheter ablation for atrial fibrillation in patients with heart failure. J Interv Card Electrophysiol 2023:10.1007/s10840-023-01661-2. [PMID: 37855993 DOI: 10.1007/s10840-023-01661-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/23/2023] [Accepted: 10/02/2023] [Indexed: 10/20/2023]
Abstract
BACKGROUND The fibrosis-4 (FIB-4) index is a noninvasive scoring system that is used to assess the progression of liver fibrosis. This study aimed to assess whether the FIB-4 index is associated with recurrent atrial fibrillation (AF) after catheter ablation in patients with and without heart failure (HF). METHODS We included 1,184 patients who underwent initial AF catheter ablation between 2016 and 2021. The patients were classified into low-risk (< 1.3), intermediate-risk (1.3-2.67), and high-risk (> 2.67) groups based on their FIB-4 indices at baseline. The patients were divided into HF (n = 552) and non-HF groups (n = 632); the HF group was further divided into paroxysmal AF (PAF) and non-PAF groups. AF recurrence after catheter ablation was then compared among the groups. RESULTS In the non-HF group, no significant differences in recurrence after ablation were observed between the low-(n = 219), intermediate-(n = 364), and high-risk (n = 49) groups. In contrast, in the HF group, the intermediate-(n = 341) and high-risk (n = 112) groups had significantly higher recurrence rates than the low-risk group (n = 99) (log-rank test, p = 0.005). This association remained significant after multivariate analysis (hazard ratio [HR]:1.374; p = 0.027). The FIB-4 index increased incrementally as the brain natriuretic peptide levels and severity of tricuspid regurgitation increased. The FIB-4 index was an independent predictor of recurrence in the non-PAF HF group (HR:1.498; p = 0.007) but not in the PAF group. CONCLUSIONS The FIB-4 index may be a useful predictor of AF recurrence after catheter ablation in patients with HF, particularly in those with non-PAF.
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Affiliation(s)
- Tomoya Iwawaki
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Itsuro Morishima
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan.
| | - Yasunori Kanzaki
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan
| | - Yasuhiro Morita
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan
| | - Naoki Watanabe
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan
| | - Naoki Yoshioka
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan
| | - Naoki Shibata
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan
| | - Hiroyuki Miyazawa
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan
| | - Kazuki Shimojo
- Department of Cardiology, Ogaki Municipal Hospital, 4-86 Minaminokawa-Cho, Ogaki, 503-0864, Japan
| | - Satoshi Yanagisawa
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Yasuya Inden
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
| | - Toyoaki Murohara
- Department of Cardiology, Nagoya University Graduate School of Medicine, Nagoya, Japan
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