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Haeusler KG, Eichner FA, Heuschmann PU, Fiebach JB, Engelhorn T, Callans D, De Potter T, Debruyne P, Scherr D, Hindricks G, Al-Khalidi HR, Mont L, Kim WY, Piccini JP, Schotten U, Themistoclakis S, Di Biase L, Kirchhof P. Detection of brain lesions after catheter ablation depends on imaging criteria: insights from AXAFA-AFNET 5 trial. Europace 2023; 25:euad323. [PMID: 37897713 PMCID: PMC10963060 DOI: 10.1093/europace/euad323] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2023] [Revised: 09/30/2023] [Accepted: 10/05/2023] [Indexed: 10/30/2023] Open
Abstract
AIMS Left atrial catheter ablation is well established in patients with symptomatic atrial fibrillation (AF) but associated with risk of embolism to the brain. The present analysis aims to assess the impact of diffusion-weighted imaging (DWI) slice thickness on the rate of magnetic resonance imaging (MRI)-detected ischaemic brain lesions after ablation. METHODS AND RESULTS AXAFA-AFNET 5 trial (NCT02227550) participants underwent MRI using high-resolution (hr) DWI (slice thickness: 2.5-3 mm) and standard DWI (slice thickness: 5-6 mm) within 3-48 h after ablation. In 321 patients with analysable brain MRI (mean age 64 years, 33% female, median CHA2DS2-VASc 2), hrDWI detected at least one acute brain lesion in 84 (26.2%) patients and standard DWI in 60 (18.7%; P < 0.01) patients. High-resolution diffusion-weighted imaging detected more lesions compared to standard DWI (165 vs. 104; P < 0.01). The degree of agreement for lesion confirmation using hrDWI vs. standard DWI was substantial (κ = 0769). Comparing the proportion of DWI-detected lesions, lesion distribution, and total lesion volume per patient, there was no difference in the cohort of participants undergoing MRI at 1.5 T (n = 52) vs. 3 T (n = 269). CONCLUSION The pre-specified AXAFA-AFNET 5 sub-analysis revealed significantly increased rates of MRI-detected acute brain lesions using hrDWI instead of standard DWI in AF patients undergoing ablation. In comparison to DWI slice thickness, MRI field strength had a no significant impact in the trial. Comparing the varying rates of ablation-related MRI-detected brain lesions across previous studies has to consider these technical parameters. Future studies should use hrDWI, as feasibility was demonstrated in the multicentre AXAFA-AFNET 5 trial.
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Affiliation(s)
- Karl Georg Haeusler
- Atrial Fibrillation NETwork association (AFNET), Mendelstr. 11, 48149 Münster, Germany
- Department of Neurology, Universitätsklinikum Würzburg Josef-Schneider-Str. 11, 97080 Würzburg, Germany
| | - Felizitas A Eichner
- Institute of Clinical Epidemiology and Biometry, University Würzburg, Würzburg, Germany
| | - Peter U Heuschmann
- Institute of Clinical Epidemiology and Biometry, University Würzburg, Würzburg, Germany
- Clinical Trial Center, University Hospital Würzburg, Würzburg, Germany
- Institute of Medical Data Science, University Hospital Würzburg, Würzburg, Germany
| | - Jochen B Fiebach
- Center for Stroke Research Berlin, Charité—Universitätsmedizin Berlin, Berlin, Germany
| | - Tobias Engelhorn
- Department of Neuroradiology, University of Erlangen-Nuremberg, Erlangen, Germany
| | - David Callans
- Hospital of the University of Pennsylvania, Philadelphia, USA
| | | | | | - Daniel Scherr
- Division of Cardiology, Medical University Graz, Austria
| | | | - Hussein R Al-Khalidi
- Department of Biostatistics & Bioinformatics, Duke University School of Medicine, Durham, NC, USA
| | - Lluis Mont
- Hospital Clínic, Universitat de Barcelona, IDIBAPS, Barcelona, Spain
| | - Won Yong Kim
- Department of Cardiology, Aarhus University Hospital, Aarhus, Denmark
| | - Jonathan P Piccini
- Duke Clinical Research Institute (DCRI), Durham, NC, USA
- Division of Cardiology Duke University Medical Center, Duke University, Durham NC, USA
| | - Ulrich Schotten
- Atrial Fibrillation NETwork association (AFNET), Mendelstr. 11, 48149 Münster, Germany
- Departments of Cardiology and Physiology, University Maastricht, Maastricht, The Netherlands
| | | | - Luigi Di Biase
- Albert Einstein College of Medicine at Montefiore Hospital, New York, NY, USA
- Texas Cardiac Arrhythmia Institute at St.David’s Medical Center, Austin, TX, USA
| | - Paulus Kirchhof
- Atrial Fibrillation NETwork association (AFNET), Mendelstr. 11, 48149 Münster, Germany
- University of Birmingham Institute of Cardiovascular Sciences, Birmingham, UK
- Department of Cardiology, University Heart and Vascular Center UKE Hamburg, Hamburg, Germany
- German Center for Cardiovascular Research, Partner site Hamburg/Kiel/Lübeck, Germany
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Chen WJ, Gan CX, Cai YW, Liu YY, Xiao PL, Zou LL, Xiong QS, Qin F, Tao XX, Li R, Du HA, Liu ZZ, Yin YH, Ling ZY. Impact of high-power short-duration atrial fibrillation ablation technique on the incidence of silent cerebral embolism: a prospective randomized controlled study. BMC Med 2023; 21:461. [PMID: 37996906 PMCID: PMC10666361 DOI: 10.1186/s12916-023-03180-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 04/18/2023] [Accepted: 11/17/2023] [Indexed: 11/25/2023] Open
Abstract
BACKGROUND High-power short-duration (HPSD) ablation strategy has emerged as a popular approach for treating atrial fibrillation (AF), with shorter ablation time. The utilized Smart Touch Surround Flow (STSF) catheter, with 56 holes around the electrode, lowers electrode-tissue temperature and thrombus risk. Thus, we conducted this prospective, randomized study to investigate if the HPSD strategy with STSF catheter in AF ablation procedures reduces the silent cerebral embolism (SCE) risk compared to the conventional approach with the Smart Touch (ST) catheter. METHODS From June 2020 to September 2021, 100 AF patients were randomized 1:1 to the HPSD group using the STSF catheter (power set at 50 W) or the conventional group using the ST catheter (power set at 30 to 35 W). Pulmonary vein isolation was performed in all patients, with additional lesions at operator's discretion. High-resolution cerebral diffusion-weighted magnetic resonance imaging (hDWI) with slice thickness of 1 mm was performed before and 24-72 h after ablation. The incidence of new periprocedural SCE was defined as the primary outcome. Cognitive performance was assessed using the Montreal Cognitive Assessment (MoCA) test. RESULTS All enrolled AF patients (median age 63, 60% male, 59% paroxysmal AF) underwent successful ablation. Post-procedural hDWI identified 106 lesions in 42 enrolled patients (42%), with 55 lesions in 22 patients (44%) in the HPSD group and 51 lesions in 20 patients (40%) in the conventional group (p = 0.685). No significant differences were observed between two groups regarding the average number of lesions (p = 0.751), maximum lesion diameter (p = 0.405), and total lesion volume per patient (p = 0.669). Persistent AF and CHA2DS2-VASc score were identified as SCE determinants during AF ablation procedure by multivariable regression analysis. No significant differences in MoCA scores were observed between patients with SCE and those without, both immediately post-procedure (p = 0.572) and at the 3-month follow-up (p = 0.743). CONCLUSIONS Involving a small sample size of 100 AF patients, this study reveals a similar incidence of SCE in AF ablation procedures, comparing the HPSD strategy using the STSF catheter to the conventional approach with the ST catheter. TRIAL REGISTRATION Clinicaltrials.gov: NCT04408716. AF = Atrial fibrillation, DWI = Diffusion-weighted magnetic resonance imaging, HPSD = High-power short-duration, ST = Smart Touch, STSF = Smart Touch Surround Flow.
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Affiliation(s)
- Wei-Jie Chen
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Chun-Xia Gan
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Yang-Wei Cai
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Yang-Yang Liu
- Department of Radiology, the Second Affiliated Hospital of Chongqing Medical University, Chongqing, China
| | - Pei-Lin Xiao
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Li-Li Zou
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Qing-Song Xiong
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Fang Qin
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Xie-Xin Tao
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Ran Li
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Hua-An Du
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Zeng-Zhang Liu
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Yue-Hui Yin
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China
| | - Zhi-Yu Ling
- Department of Cardiology, the Second Affiliated Hospital of Chongqing Medical University, No. 288, Tianwen Avenue, Chayuan, Nan'an District, Chongqing, 400060, China.
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Xu Y, Dong ZZ, Jiang LJ, Zhang CX, Dong GY. Analysis of Variables Associated with Positive Micro-Embolic Signals Detected by Transcranial Doppler in Patients with Atrial Fibrillation and Their Predictive Value for Embolic Risk. Risk Manag Healthc Policy 2023; 16:2439-2444. [PMID: 38024500 PMCID: PMC10656845 DOI: 10.2147/rmhp.s435582] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/15/2023] [Accepted: 10/28/2023] [Indexed: 12/01/2023] Open
Abstract
Objective This study examined the factors associated with positive micro-embolic signals (MES) on transcranial Doppler monitoring in patients with atrial fibrillation (AF), as well as the predictive value of MES for the risk of embolism in AF. Methods Sixty-six patients who had micro emboli with AF were included in the positive group, and 75 patients who did not have micro emboli with AF served as the control group. The clinical data, congestive heart failure, hypertension, age ≥ 75 (doubled), diabetes mellitus, prior stroke or transient ischemic attack (doubled), vascular disease, age 65-74, female (CHA2DS2-VASc) score, D-dimer (D-d) level, echocardiography results, and brain magnetic resonance imaging (MRI) findings were compared between the two groups. Logistic regression models were used to analyze the relationship between positive micro emboli with CHA2DS2-VASc score, D-d, left atrial anteroposterior diameter (LAD), and silent cerebral ischemia (SCI) occurrence. Results The CHA2DS2-VASc score, D-d level, and LAD were significantly higher in the positive group than in the control group (P < 0.05) and were accompanied by a higher detection rate of SCI by brain MRI (P < 0.01). Elevated D-d levels, increased LAD, and the detection rate of SCI were all highly positively correlated with positive micro emboli. Also, CHA2DS2-VASc score ≥ 2 showed a significant positive correlation with positive micro emboli, and the higher CHA2DS2-VASc score was associated with a stronger correlation. The multivariate regression analysis demonstrated that positive micro-embolic was independently associated with SCI and a CHA2DS2-VASc score of ≥ 4. Conclusion Positive micro emboli in patients with persistent AF are consistent with an increased risk of embolism, and are independently associated with a higher CHA2DS2-VASc score and SCI, which can be used as an indicator of individual embolic risk in patients with AF.
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Affiliation(s)
- Yun Xu
- Department of Cardiology, Suzhou Wuzhong People’s Hospital, Suzhou, 215128, People’s Republic of China
| | - Zhen-Zhen Dong
- Department of Cardiology, Suzhou Wuzhong People’s Hospital, Suzhou, 215128, People’s Republic of China
| | - Li-Jiao Jiang
- Department of Cardiology, Suzhou Wuzhong People’s Hospital, Suzhou, 215128, People’s Republic of China
| | - Cen-Xi Zhang
- Department of Cardiology, Suzhou Wuzhong People’s Hospital, Suzhou, 215128, People’s Republic of China
| | - Guo-Ying Dong
- Department of Cardiology, Suzhou Wuzhong People’s Hospital, Suzhou, 215128, People’s Republic of China
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Vô C, Bartoletti S, Benali K, Gonzalez CM, Mondésert B, Gagnon MH, Dyrda K, Fourier A, Khairy P. Robotic magnetic-guided catheter ablation in patients with congenital heart disease: a systematic review and pooled analysis. Expert Rev Cardiovasc Ther 2023; 21:227-236. [PMID: 36852632 DOI: 10.1080/14779072.2023.2184798] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 03/01/2023]
Abstract
BACKGROUND Robotic magnetic navigation (RMN) has emerged as a potential solution to overcome challenges associated with catheter ablation of arrhythmias in patients with congenital heart disease (CHD). OBJECTIVES To assess safety and efficacy of RMNguided catheter ablation in patients with CHD. DESIGN AND METHODS A systematic review and pooled analysis was conducted on patients with CHD who underwent RMNguided catheter ablation. Random effects models were used to generate pooled estimates with the inverse variance method used for weighting studies. RESULTS Twentyfour nonoverlapping records included 167 patients with CHD, mean age 36.5 years, 44.6% female. Type of CHD was simple in 27 (16.2%), moderate in 32 (19.2%), and complex in 106 (63.5%). A total of 202 procedures targeted 260 arrhythmias, the most common being macroreentrant atrial circuits. The mean procedural duration was 207.5 minutes, with a mean fluoroscopy time of 12.1 minutes. The pooled acute success rate was 89.2% [95% CI (77.8%, 97.4%)]. Freedom from arrhythmia recurrence was 84.5% [95% CI (72.5%, 94.0%)] over a mean follow-up of 24.3 months. The procedural complication rate was 3.5% with no complication attributable to RMN technology. CONCLUSION RMN-guided ablation appears to be safe and effective across a variety of arrhythmia substrates and types of CHD.
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Affiliation(s)
- Christophe Vô
- Division of Electrophysiology, Department of Pediatric Cardiology, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, Montreal, Québec, Canada.,Electrophysiology Service, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada
| | - Stefano Bartoletti
- Electrophysiology Service, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada
| | - Karim Benali
- Electrophysiology Service, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada.,Electrophysiology Service, Department of Cardiology, Saint-Etienne University Hospital Center, SaintEtienne, France
| | - Cecilia M Gonzalez
- Division of Electrophysiology, Department of Pediatric Cardiology, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, Montreal, Québec, Canada
| | - Blandine Mondésert
- Electrophysiology Service, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada
| | - Marie-Hélène Gagnon
- Division of Electrophysiology, Department of Pediatric Cardiology, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, Montreal, Québec, Canada
| | - Katia Dyrda
- Electrophysiology Service, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada
| | - Anne Fourier
- Division of Electrophysiology, Department of Pediatric Cardiology, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, Montreal, Québec, Canada
| | - Paul Khairy
- Division of Electrophysiology, Department of Pediatric Cardiology, Centre Hospitalier Universitaire Ste-Justine, Université de Montréal, Montreal, Québec, Canada.,Electrophysiology Service, Department of Medicine, Montreal Heart Institute, Université de Montréal, Montreal, Québec, Canada
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