Heart rhythm society

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Cardiac implantable electronic devices (CIED) are often important for regulating cardiac rate and rhythm. Pacemakers and defibrillators are among the top 10 most-implanted medical devices, with >1.5 million devices implanted annually. While millions of patients have benefited with improved quality of life and survival, CIED-systems are increasingly complex and do not always perform according to expectations. Advisory notices communicate important information about the safety and performance of a medical device to healthcare providers and patients...

BACKGROUND: Peripheral electrical nerve stimulation (PENS) reportedly improves cardiac function after myocardial ischemia (MI) by rebalancing the cardiac autonomic nervous system. The dynamic and continuous influence of the PENS on autonomic and cardiac functioning based on cardiac self-repair is not well understood. OBJECTIVE: This study aimed to explore the correlations between autonomic nervous balance and functional cardiac repair after MI and to clarify the optimal acupoint selection and time course for PENS...

BACKGROUND: Premature ventricular contractions (PVCs) burden is a risk factor for heart failure and cardiovascular death in patients with structural heart disease. Long-term ECG monitoring can have a significant impact on PVC burden evaluation by further defining PVC distribution patterns. OBJECTIVE: This study aimed to ascertain the optimal duration of ECG monitoring to characterize PVC burden and understand clinical characteristics associated with frequent PVCs and NSVT in a large US cohort...

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No abstract text is available yet for this article.

BACKGROUND: Endocardial electrogram (EGM) characteristics in non-ischemic cardiomyopathy (NICM) have not been explored adequately for prognostication. OBJECTIVES: We aim to study correlation of bipolar and unipolar EGM characteristics with left ventricular ejection fraction (LVEF) and ventricular tachycardia (VT) in NICM. METHODS: Electroanatomical mapping of LV was performed. Correlation of EGM characteristics with LVEF was performed. Differences between groups with and without VT and predictors of VT were studied...

BACKGROUND: Data regarding the risk of atrial fibrillation (AF) during the post-acute phase of COVID-19 are lacking. OBJECTIVE: We assess the risk of incident AF in COVID-19 recovered patients by performing a systematic review and meta-analysis of the available data. METHODS: Following the PRIMSA guidelines, we searched Medline and Scopus to locate all articles published up to December 10, 2023, reporting the risk of AF in patients recovered from COVID-19 infection compared to non-infected patients who developed the arrhythmia over the same follow-up period...

BACKGROUND: Atrial arrhythmogenic substrate is a key determinant of atrial fibrillation (AF) recurrence after pulmonary vein isolation (PVI), and reduced conduction-velocities have been linked to adverse outcome. However, a non-invasive method to assess such electrophysiological substrate is not available to date. OBJECTIVE: This study aimed to non-invasively assess regional conduction-velocities and their association with arrhythmia-free survival following PVI...

BACKGROUND: No study has assessed durability of pulmonary vein isolation (PVI) with radiofrequency (RF) and Cryoballoon (CB) in patients with persistent AF. These data are especially lacking for those with significantly diseased left atria (LA). OBJECTIVE: To assess PVI durability in patients with significant LA disease and compare reconnection rates between RF and CB. METHODS: 44 Patients (mean age 63, 77% male, median time since AF diagnosis 22...

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BACKGROUND: Heart failure (HF) is usually accompanied by the activation of the sympathetic nerve, and the excessive activation of the sympathetic nerve also promotes cardiac remodeling and cardiac dysfunction. In the isoproterenol (ISO) induced animal model, it is often accompanied by myocardial hypertrophy, fibrosis, and inflammation. Leukocyte immunoglobulin-like receptor B4a (Lilrb4a) is an immunosuppressive regulatory receptor and plays a vital role in cardiovascular disease. However, the effect of Lilrb4a on ventricular arrhythmias from ISO-induced mice model remains unclear...

Noteworthy in Cardiothoracic Surgery 2023 summarizes a few of the most high-impact trials and provocative trends in cardiothoracic surgery and transplantation this past year. Transplantation using organs procured from donation after circulatory death (DCD) continues to increase, and the American Society of Transplant Surgeons released recommendations on best practices in 2023. We review a summary of data on the impact of DCD on heart and lung transplantation. There has been increased interest in extracorporeal life support (ECLS), particularly after the COVID-19 pandemic, and we review the results of the highly discussed ECLS-SHOCK trial, which randomized patients in cardiogenic shock with planned revascularization to ECLS vs usual care...

BACKGROUND: Pulmonary vein isolation using cryoablation is effective and safe in patients with atrial fibrillation (AF). Although both obesity and underweight are associated with a higher risk for incident AF, there is limited data on the efficacy and safety following cryoablation according to body mass index (BMI) especially in Asians. METHODS: Using the Korean Heart Rhythm Society Cryoablation registry, a multicenter registry of 12 tertiary hospitals, we analyzed AF recurrence and procedure-related complications after cryoablation by BMI (kg/m2) groups (BMI<18...

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No abstract text is available yet for this article.

BACKGROUND: The benefit of catheter ablation in patients with atrial fibrillation (AF) for patients with heart failure with preserved ejection fraction (HFpEF) remains uncertain. OBJECTIVE: We conducted a systematic review and meta-analysis to compare catheter ablation and medical therapy (antiarrhythmics for rhythm or rate control) in patients with AF and HFpEF. METHODS: We searched PubMed, Embase and Cochrane Central. Outcomes were the composite endpoints of death or heart failure (HF) hospitalization, all-cause-death, cardiovascular death, all-cause-rehospitalization and HF hospitalization...

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BACKGROUND: Transcatheter aortic valve implantation (TAVI) serves a growing range of patients with severe aortic stenosis (AS). TAVI has evolved to a streamlined procedure minimizing length of hospital stay. AIMS: To evaluate the safety and efficacy of an early discharge (ED) strategy after TAVI. METHODS: We performed an international, multi-center, prospective observational single-arm study in AS patients undergoing TAVI with the ACURATE valve platform...

BACKGROUND: Idiopathic atypical (non-cavotricupid isthmus [CTI]-dependent) atrial flutter (IAAFL) may be seen in patients without structural heart disease and without previous cardiac surgery or ablation. OBJECTIVE: This study sought to determine the patient characteristics, electrophysiological and electroanatomic properties, and clinical outcomes after ablation in patients with IAAFL. METHODS: We retrospectively compared IAAFL patients to CTI-dependent AFL (C-AFL) patients undergoing catheter ablation...