A06-5 The prevalence of atrial arrhythmia is more accurate in patients implanted with a DDDR pacemaker with stored electrograms including the onset of the episode and the marker annotations

Abstract Background and objectives Little is known about atrial involvement in patients with arrhythmogenic right ventricular cardiomyopathy (ARVC). Recent studies have suggested that atrial arrhythmia (AA), including atrial fibrillation (AF), atrial flutter (AFL), and atrial tachycardia (AT), was common among these patients although the reported prevalence varied considerably across the studies. Methods We searched for published articles indexed in MEDLINE and EMBASE databases from inception through Sep 22, 2019 to identify cohort studies of patients with ARVC that described the prevalence of atrial arrhythmia among the participants. The pooled prevalence across studies was calculated. Results A total of 16 cohort studies with 1,986 patients with ARVC were included into this meta-analysis. The pooled prevalence of overall AA among patients with ARVC was 17.9% (95% CI, 13.0%–24.0%; I2 88%), the pooled prevalence of AF of 12.9% (95% CI, 9.6%–17.0%; I2 78%), the pooled prevalence of AFL of 5.9% (95% CI, 3.7%–9.2%; I2 70%), and the pooled prevalence of AT of 7.1% (95% CI, 3.7%–13.0%; I2 49%). Conclusions AA is common among patient with ARVC with the pooled prevalence of approximately 18%, which is substantially higher than the reported prevalence of AA in general population. Funding Acknowledgement Type of funding source: None

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Discrete cosine transform and multi class support vector machines for classification cardiac atrial arrhythmia and cardiac normal

Journal of Physics Conference Series ◽

10.1088/1742-6596/1858/1/012093 ◽

2021 ◽

Vol 1858 (1) ◽

pp. 012093

Author(s):

Ratnadewi ◽

Aan Darmawan Hangkawidjaja ◽

Agus Prijono ◽

Jo Suherman

Keyword(s):

Support Vector Machines ◽

Discrete Cosine Transform ◽

Atrial Arrhythmia ◽

Support Vector ◽

Cosine Transform ◽

Vector Machines

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Long-term follow-up of thoracoscopic ablation for long-standing persistent atrial fibrillation

European Heart Journal ◽

10.1093/ehjci/ehaa946.0625 ◽

2020 ◽

Vol 41 (Supplement_2) ◽

Author(s):

N Harlaar ◽

M.A.P Oudeman ◽

S.A Trines ◽

G.S De Ruiter ◽

M Khan ◽

...

Keyword(s):

Sinus Rhythm ◽

Pulmonary Vein ◽

Atrial Arrhythmia ◽

Wilcoxon Test ◽

Continuous Group ◽

Loop Recorder ◽

Long Term Follow Up ◽

Rhythm Monitoring

Abstract Background Catheter ablation in patients with long-standing persistent AF (LSPAF) remains challenging and often requires repeated procedures with variable results. We report long-term outcomes of a bipolar thoracoscopic pulmonary vein and left atrial posterior wall ablation for LSPAF, and compare continuous and interval rhythm monitoring. Methods Seventy-seven LSPAF patients who underwent thoracoscopic pulmonary vein and box isolation between 2009–2017 in two Dutch centers were included. Follow-up consisted of continuous rhythm monitoring using an implanted loop recorder or 24-h Holter at 3/6/12/24/60 months. Results Mean age was 59±8 years with a median AF duration of 3.8 [1.2–6.3] years. In the total cohort, at 2-year follow-up, 86.0% of patients were in sinus rhythm, 12.3% were in paroxysmal AF and 1.6% in persistent AF. At 5 years, 62.9% of patients were in sinus rhythm, 20.0% in paroxysmal AF, 14.3% in persistent AF and 2.9% was experiencing atrial flutter. Continuous rhythm monitoring was performed in 46% of patients. Comparing continuous and interval rhythm monitoring, freedom from any atrial arrhythmia episode at 2- and 5 years was 60.0% and 49.9% in the continuous group and 93.8% and 51.9% in the interval monitoring group, respectively (p=0.02, Breslow-Wilcoxon test). In patients with continuous rhythm monitoring the mean atrial arrhythmia burden was reduced from 99.1% preoperatively to 0.1% at the end of the blanking period and 7.3% at 2-year follow-up. Conclusions Thoracoscopic box ablation is highly effective in restoring sinus rhythm at medium term follow-up. However, it is not a curative treatment as demonstrated by the 50% arrhythmia-free survival at long-term follow-up. Whether this is due to the progressive nature of AF needs further investigation. Continuous rhythm monitoring shows earlier recurrence detection with a potential early treatment adaptation. Funding Acknowledgement Type of funding source: None

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