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    Arrhythmia burden and related outcomes in Eisenmenger syndrome.
    Congenit Heart Dis 2017 May 19. Epub 2017 May 19.
    Cincinnati Children's Hospital Medical Center, Cincinnati, Ohio.
    Background: Patients with Eisenmenger syndrome have a shorter lifespan than the general population. A significant proportion develop arrhythmia and some, sudden death.

    Objective: The aims of this study were to characterize the frequency, type and effects of arrhythmias in adult patients with Eisenmenger's syndrome and to identify risk factors for arrhythmias. Read More

    Lean Body Mass Is the Predominant Anthropometric Risk Factor for Atrial Fibrillation.
    J Am Coll Cardiol 2017 May;69(20):2488-2497
    Department of Clinical Medicine, Aarhus University, Silkeborg Hospital, Denmark.
    Background: Obesity is repeatedly emphasized as a risk factor for atrial fibrillation or flutter (AF). However, the underlying evidence may be questioned, as the obvious correlations between various anthropometric measures hamper identification of the characteristics that are biologically driving AF risk, and recent studies suggest that fat carries limited or no independent risk of AF.

    Objectives: This study sought to assess mutually adjusted associations among AF risk and height, weight, body mass index, hip and waist circumference, waist-to-hip ratio, and bioelectrical impedance-derived measures of fat mass, lean body mass, and fat percentage. Read More

    Cardiogenic Shock, Acute Severe Mitral Regurgitation and Complete Heart Block After Cavo-Tricuspid Isthmus Atrial Flutter Ablation.
    Cardiol Res 2017 Apr 3;8(2):63-67. Epub 2017 May 3.
    Wright State University Boonshoft School of Medicine, Dayton, OH, USA.
    Radiofrequency (RF) ablation is the first-line management of cavo-tricuspid isthmus dependent atrial flutter. It has been performed with 95% success rate. Adverse events are very rare. Read More

    Impact of a Perioperative Prophylaxis Guideline on Post-Cardiothoracic Surgery Atrial Fibrillation.
    Ann Pharmacother 2017 May 1:1060028017709290. Epub 2017 May 1.
    5 Hartford Hospital Department of Pharmacy, Hartford, CT, USA.
    Background: National practice guidelines do not provide clear recommendations on combination pharmacological regimens to reduce cardiothoracic surgery (CTS) postoperative atrial fibrillation (POAF).

    Objective: This study examines if there is a reduction in POAF rates after implementing a perioperative prophylaxis guideline that includes amiodarone, β-blockers, and high-intensity statins.

    Methods: Data were retrospectively collected on 400 adults (200 patients pre-guideline implementation and 200 patients post-guideline implementation) with a CHA2DS2-VASc (Congestive Heart Failure, Hypertension, Age, Diabetes Mellitus, and Vascular Disease) score of at least 3 points after CTS. Read More

    Trends and Patterns of Geographic Variation in Cardiovascular Mortality Among US Counties, 1980-2014.
    JAMA 2017 May;317(19):1976-1992
    Institute for Health Metrics and Evaluation, University of Washington, Seattle.
    Importance: In the United States, regional variation in cardiovascular mortality is well-known but county-level estimates for all major cardiovascular conditions have not been produced.

    Objective: To estimate age-standardized mortality rates from cardiovascular diseases by county.

    Design And Setting: Deidentified death records from the National Center for Health Statistics and population counts from the US Census Bureau, the National Center for Health Statistics, and the Human Mortality Database from 1980 through 2014 were used. Read More

    Pathway for the Management of Atrial Fibrillation and Atrial Flutter.
    Crit Pathw Cardiol 2017 Jun;16(2):47-52
    From the Mount Sinai St. Luke's Hospital, New York, NY.
    Atrial fibrillation (AF) is the most common cardiac rhythm disturbance encountered in clinical practice, and its prevalence is increasing as the population ages. The American College of Cardiology, the American Heart Association, and the European Society of Cardiology established guidelines for the management of patients with AF. Atrial flutter (Afl) is less common and is often associated with or preceded by AF or occurs in an isolated pattern. Read More

    Predicting Determinants of Atrial Fibrillation or Flutter for Therapy Elucidation in Patients at Risk for Thromboembolic Events (PREDATE AF) Study.
    Heart Rhythm 2017 May 12. Epub 2017 May 12.
    Keesler Medical Center, Biloxi, Mississippi; Baylor Heart Hospital, Plano, Texas.
    Background: Atrial fibrillation (AF) is the most common clinically significant cardiac rhythm disorder. There is considerable interest in screening for AF, as it is a leading cause of stroke, and oral anticoagulants (OACs) have been shown to significantly reduce the risk of stroke in patients with AF. Improved screening for AF with subsequent treatment may help improve long-term outcomes, but the optimal patient population and screening intensity are unknown. Read More

    Epicardial-Endocardial Breakthrough During Stable Atrial Macro-Reentry: Evidence from Ultra High-Resolution Three-Dimensional Mapping.: Epicardial-Endocardial Breakthrough In Atrial Macro-Reentry.
    Heart Rhythm 2017 May 4. Epub 2017 May 4.
    Department of Cardiology, Royal Melbourne Hospital, Australia;; Faculty of Medicine, Dentistry, and Health Sciences, University of Melbourne, Australia;. Electronic address:
    Background: Evidence for epicardial-endocardial breakthrough(EEB) is derived from mapping inferences in patients with AF who may also have focal activations.

    Objectives: We investigated whether EEB could be discerned during stable right atrial macro-reentry using high-density high-spatial resolution 3D mapping.

    Methods: Macro-reentry was diagnosed using 3D mapping and entrainment. Read More

    Trajectory of Congestion Metrics by Ejection Fraction in Patients With Acute Heart Failure (from the Heart Failure Network).
    Am J Cardiol 2017 Apr 12. Epub 2017 Apr 12.
    Division of Cardiology, Duke University Medical Center, Durham, North Carolina; Duke Clinical Research Institute, Durham, North Carolina.
    Differences in the clinical course of congestion by underlying ejection fraction (EF) have not been well-characterized in acute heart failure (AHF). A post hoc analysis was performed using pooled data from the Diuretic Optimization Strategies Evaluation in Acute Heart Failure, Cardiorenal Rescue Study in Acute Decompensated Heart Failure, and Renal Optimization Strategies Evaluation in Acute Heart Failure trials. All patients were admitted for a primary diagnosis of AHF. Read More

    Risk of arterial and venous thromboembolism in patients with atrial fibrillation or flutter: A nationwide population-based cohort study.
    Int J Cardiol 2017 Apr 26. Epub 2017 Apr 26.
    Department of Clinical Epidemiology, Aarhus University Hospital, Olof Palmes Allé 43-45, DK-8200 Aarhus N, Denmark. Electronic address:
    Background: Patients with atrial fibrillation or flutter (AFF) are at increased risk of ischemic stroke, but their risk of other thromboembolic events remains less clear.

    Methods: During 2004-2013, we conducted a nationwide population-based cohort study using Danish medical registries. We identified all patients with first-time AFF and sampled a sex-, age-, and calendar year-matched general population comparison cohort without AFF. Read More

    Access to the native atria following conduit total cavopulmonary anastomosis.
    Catheter Cardiovasc Interv 2017 May 4. Epub 2017 May 4.
    Saint Louis University School of Medicine, Department of Pediatrics, Division of Pediatric Cardiology, and Cardinal Glennon Children's Hospital, St Louis, MO, 63104.
    Objectives: We describe the use of trans-thoracic and trans-conduit puncture to access the atria and perform interventional procedures in patients who have undergone conduit total cavopulmonary anastomosis.

    Background: Catheter access to the atria following intra or extra-cardiac Fontan is desirable when there is a need for trans-atrial interventions.

    Methods: Between 2009 and 2014, 5 patients ages 7 to 28 years underwent this approach; three trans-thoracic and 2 trans-conduit punctures. Read More

    Mitral isthmus ablation using a circular mapping catheter positioned in the left atrial appendage as a reference for conduction block.
    Oncotarget 2017 Apr 13. Epub 2017 Apr 13.
    Department of Cardiology, Keio University School of Medicine, Shinjuku-ku, Tokyo, 160-8582, Japan.
    Background: For perimitral atrial flutter (PMFL) developing after catheter ablation of atrial fibrillation (AF), to create a complete conduction block at the mitral isthmus (MI) is mandatory to terminate it, however, it is still challenging.

    Methods: This study consisted of 80 patients (74 male, 61 ± 8.1 years) undergoing MI ablation. Read More

    The exception to Marriot's sign.
    Ann Noninvasive Electrocardiol 2017 May 3. Epub 2017 May 3.
    Medical School, American University of Antigua, Saint John's, Antigua and Barbuda.
    Differentiation of a wide complex arrhythmia can pose as a clinical challenge in the acute care setting. Two broad differentials exist including ventricular tachycardia versus supraventricular tachycardia with aberrancy, underlying bundle branch block or intrinsic conduction defect. To aid in distinguishing between supraventricular tachycardia and ventricular tachycardia, Brugada criteria is commonly used, albeit new algorithms have become more common. Read More

    Lower Body Weight in Men, an Epidemiological Predictor of Enlarged Left Atrium in Sinus Rhythm Patients with Dilated Heart.
    J Cardiovasc Echogr 2016 Jul-Sep;26(3):83-88
    University Clinical Center of Kosova and Medical Faculty, University of Prishtina, Prishtina, Kosovo.
    Background/aims: The source of thrombi in patients with dilated cardiomyopathy is not necessarily from the dilated left ventricle. Left atrium (LA) and left atrial appendage (LAA) might be in charge for relatively high rate of systemic embolizations in these patients. The main aim of our study was to identify epidemiological predictors in sinus rhythm patients with dilated heart for LA and LAA dilation and/or dysfunction. Read More

    Arrhythmia Surgery for Adults with Congenital Heart Disease.
    Card Electrophysiol Clin 2017 Jun;9(2):329-340
    Johns Hopkins Children's Heart Surgery, Florida Hospital for Children, 2501 N Orange Avenue, Suite 540, Orlando, FL 32804, USA.
    Patients with repaired or unrepaired congenital heart anomalies are at increased risk for arrhythmia development throughout their lives, often paralleling the need for reoperations for hemodynamic residua. The ability to incorporate arrhythmia surgery into reoperations can result in improvement in functional class and decreased need for antiarrhythmic medications. Every reoperation for congenital heart disease can be viewed as an opportunity to assess the electrical and arrhythmia substrates and to intervene to improve the arrhythmias and the hemodynamic condition of the patient. Read More

    Sex Differences in Outcomes After Discharge from the Emergency Department for Atrial Fibrillation/Flutter.
    Can J Cardiol 2017 Apr 17. Epub 2017 Apr 17.
    Department of Medicine, University of Alberta, Edmonton, Alberta, Canada.
    Background: Atrial fibrillation and flutter (AFF) are the most common arrhythmias presenting to emergency departments (EDs). We examined sex differences in outcomes for patients with AFF discharged from the ED in Alberta, Canada.

    Methods: ED presentations for AFF during 1999-2011 that ended in discharge were extracted from administrative databases for all Alberta residents (age ≥ 35 years). Read More

    Outcomes in adult Fontan patients with atrial tachyarrhythmias.
    Am Heart J 2017 Apr 2;186:12-20. Epub 2017 Jan 2.
    Division of Cardiovascular Diseases, Mayo Clinic, Rochester, MN.
    Background: The optimal management strategy for atrial tachyarrhythmia in the Fontan population is unknown.

    Methods: Retrospective review of 264 adult Fontan patients with atrial tachyarrhythmia evaluating 3 clinically adopted scenarios: antiarrhythmic drug (AAD) therapy, catheter ablation (CA), and Fontan conversion (FC). These patients were followed up at Mayo Clinic from 1994 to 2014. Read More

    Alcohol consumption, sinus tachycardia, and cardiac arrhythmias at the Munich Octoberfest: results from the Munich Beer Related Electrocardiogram Workup Study (MunichBREW).
    Eur Heart J 2017 Apr 25. Epub 2017 Apr 25.
    Department of Medicine I, University Hospital Munich, Ludwig Maximilians University, Marchioninistr. 15, 81377 Munich, Germany.
    Aims: Alcohol is a risk factor for cardiac arrhythmias. Retrospective analyses suggest supraventricular arrhythmias consecutive to acute alcohol consumption, but prospective data are limited. We intended to prospectively associate acute alcohol consumption with cardiac arrhythmias. Read More

    [Clinical features and outcomes of radiofrequency catheter ablation of atrial flutter in children].
    Zhonghua Er Ke Za Zhi 2017 Apr;55(4):267-271
    Department of Pediatric Cardiology, Heart Center, the First Hospital of Tsinghua University(Beijing Huaxin Hospital), Beijing 100016, China.
    Objective: To explore the clinical features of atrial flutter (AFL) and evaluate the efficacy of radiofrequency catheter ablation (RFCA) for AFL in children. Method: Data were collected and analyzed on 50 consecutive pediatric AFL patients (male 37/female 13) who underwent electrophysiology study and RFCA from February 2009 to November 2016 in a case observational study. The average age was (6. Read More

    Atrial fibrillation originating from superior vena cava with atrial flutter-electrocardiogram pattern.
    Pacing Clin Electrophysiol 2017 Apr 24. Epub 2017 Apr 24.
    Division of Cardiology, Department of Medicine, Taipei Veterans General Hospital, Taipei, Taiwan.
    Backgrounds: Substrate property is related to the genesis and maintenance of atrial fibrillation (AF). The aim of the study was to investigate the impact of substrate property on the electrocardiogram (ECG) in patients with AF originating from the superior vena cava (SVC).

    Methods And Results: Seventy-six patients with AF originating from SVC underwent catheter ablation were included from 2004 to 2013. Read More

    Conventional acupuncture for cardiac arrhythmia: A systematic review of randomized controlled trials.
    Chin J Integr Med 2017 Apr 22. Epub 2017 Apr 22.
    Beijing University of Chinese Medicine, Beijing, 100078, China.
    Objective: To exam the effect and safety of conventional acupuncture (CA) on cardiac arrhythmia.

    Methods: Nine medical databases were searched until February 2016 for randomized controlled trials. Heterogeneity was measured by Cochran Q test. Read More

    Use of adenosine to shorten the post ablation waiting period for cavotricuspid isthmus-dependent atrial flutter.
    J Cardiovasc Electrophysiol 2017 Apr 21. Epub 2017 Apr 21.
    Gill Heart Institute, University of Kentucky, Lexington, Kentucky.
    Background: Dormant conduction unmasked by adenosine predicts clinical recurrences of cavotricuspid isthmus (CTI) dependent atrial flutter following catheter ablation. Conventional practice involves a waiting period of 20 to 30 minutes after achievement of a bidirectional line of block (BDB) to monitor for recovery of conduction.

    Objective: Assess whether abolition of dormant conduction with adenosine immediately after CTI ablation and BDB can predict the lack of CTI conduction recovery during the following 30 minutes. Read More

    Atrial fibrillation patients with isolated pulmonary veins: Is sinus rhythm achievable?
    J Cardiovasc Electrophysiol 2017 Apr 21. Epub 2017 Apr 21.
    Section of Cardiac Electrophysiology and Arrhythmia Service, Division of Cardiology, University of California, San Francisco.
    Background: The cornerstone of atrial fibrillation (AF) ablation is isolation of the pulmonary veins (PVs). Patients with recurrent AF undergoing repeat ablation usually have PV reconnection (PVr). The ablation strategy and outcome of patients undergoing repeat ablation who have persistent isolation of all PVs (PVi) at the time of repeat ablation is unknown. Read More

    Safety and Feasibility of Subcutaneous Purse-String Suture of the Femoral Vein After Electrophysiological Procedures on Uninterrupted Oral Anticoagulation.
    Am J Cardiol 2017 Jun 16;119(11):1781-1784. Epub 2017 Mar 16.
    Department of Electrophysiology, German Heart Center Munich, Technical University, Munich, Germany.
    The aim of this study was to compare safety and feasibility of a subcutaneous purse-string suture (PSS) with manual compression (MC) to gain hemostasis in patients after multiple femoral venous punctures undergoing electrophysiological procedures on uninterrupted oral anticoagulation (OAK). A total of 784 patients who underwent catheter ablation for atrial fibrillation (n = 564) or (a)typical atrial flutter (n = 220) were assessed. Four hundred sixty-two patients received PSS (58. Read More

    Crucial role of pulmonary vein firing as an initiator of typical atrial flutter: Evidence of a close relationship between atrial fibrillation and typical atrial flutter.
    J Arrhythm 2017 Apr 18;33(2):86-91. Epub 2016 Aug 18.
    Cardiovascular Division, Faculty of Medicine, University of Tsukuba, Tsukuba, Japan.
    Background: Several studies reported that cavotricuspid isthmus-dependent atrial flutter (typical AFL) frequently coexists with atrial fibrillation (AF); however, the underlying mechanisms have not been fully investigated. This study aimed to reveal the mechanisms of the initiation of typical AFL and the association between typical AFL and AF.

    Methods: Among 154 consecutive patients undergoing a first catheter ablation of AF, we investigated the appearance and mechanism of spontaneous initiation of typical AFL during catheter ablation. Read More

    What Is the Appropriate Lesion Set for Ablation in Patients with Persistent Atrial Fibrillation?
    Curr Treat Options Cardiovasc Med 2017 May;19(5):35
    Montefiore-Einstein Center for Heart and Vascular Care, Montefiore Medical Center, Albert Einstein College of Medicine, 111 East 210th Street, Bronx, NY, 10467, USA.
    Opinion Statement: Special attention must be paid to detect, diagnose, and optimize management of reversible or treatable causes of long-standing persistent atrial fibrillation (LSPAF) such as obesity, obstructive sleep apnea (OSA), hypertension, hypo or hyperthyroidism, inflammatory and infectious diseases, and stress. Though, we strongly believe that the role of the pulmonary veins (PVs) is more pronounced in paroxysmal atrial fibrillation (AF) than in persistent AF, performing an adequate pulmonary vein isolation is still key in LSPAF. Patients with LSPAF will frequently require a more aggressive mapping and ablative approach. Read More

    Health Literacy and Awareness of Atrial Fibrillation.
    J Am Heart Assoc 2017 Apr 11;6(4). Epub 2017 Apr 11.
    Department of Research and Evaluation, Kaiser Permanente Southern California, Pasadena, CA
    Background: Atrial fibrillation (AF) is the most common clinically significant arrhythmia in adults and a major risk factor for ischemic stroke. Nonetheless, previous research suggests that many individuals diagnosed with AF lack awareness about their diagnosis and inadequate health literacy may be an important contributing factor to this finding.

    Methods And Results: We examined the association between health literacy and awareness of an AF diagnosis in a large, ethnically diverse cohort of Kaiser Permanente Northern and Southern California adults diagnosed with AF between January 1, 2006 and June 30, 2009. Read More

    Noninvasive predictors of perioperative atrial arrhythmias in patients with tetralogy of Fallot undergoing pulmonary valve replacement.
    Clin Cardiol 2017 Apr 10. Epub 2017 Apr 10.
    Department of Cardiology, University of Colorado, Aurora.
    Background: Patients with tetralogy of Fallot (TOF) have increased risk of atrial arrhythmias.

    Hypothesis: A measure of atrial dispersion, the P-wave vector magnitude (Pvm), can identify patients at risk for perioperative atrial flutter (AFL) or intra-atrial re-entrant tachycardia (IART) in a large TOF cohort.

    Methods: We performed a blinded, retrospective analysis of 158 TOF patients undergoing pulmonary valve replacement between 1997 and 2015. Read More

    Digoxin versus placebo, no intervention, or other medical interventions for atrial fibrillation and atrial flutter: a protocol for a systematic review with meta-analysis and Trial Sequential Analysis.
    Syst Rev 2017 Apr 5;6(1):71. Epub 2017 Apr 5.
    Copenhagen Trial Unit, Centre for Clinical Intervention Research, Department 7812, Rigshospitalet, Copenhagen University Hospital, Copenhagen, Denmark.
    Background: Atrial fibrillation is the most common arrhythmia of the heart with a prevalence of approximately 2% in the western world. Atrial flutter, another arrhythmia, occurs less often with an incidence of approximately 200,000 new patients per year in the USA. Patients with atrial fibrillation and atrial flutter have an increased risk of death and morbidities. Read More

    Antimitochondrial antibodies-positive myositis accompanied by cardiac involvement.
    BMJ Case Rep 2017 Mar 31;2017. Epub 2017 Mar 31.
    Tokyo Teishin Byoin, Chiyoda-ku, Japan.
    We report a 55-year-old man who experienced proximal muscle weakness accompanied by the atrial flutter (AFL) with 1:1 conduction. Detailed examination revealed elevated antimitochondrial antibodies (AMA) and creatine kinase (CK). AFL was converted to sinus rhythm by cardioversion. Read More

    Ablation of supraventricular arrhythmias in adult congenital heart disease: A contemporary review.
    Arch Cardiovasc Dis 2017 Mar 27. Epub 2017 Mar 27.
    Département de Cardiologie, Centre de Recherche Cardiovasculaire de Paris (INSERM U970), Hôpital Européen Georges-Pompidou, Paris, France; Université Paris Descartes, Paris, France.
    Supraventricular arrhythmias are an important and increasing cause of morbidity in adults with congenital heart disease, requiring specific management strategies. Pharmacological treatment has limited efficacy, and is often associated with some side-effects. Major improvements in catheter ablation techniques have opened new opportunities to better understand underlying mechanisms of supraventricular arrhythmias, offer better therapy, and eventually improve symptoms and quality of life in these patients. Read More

    Bayés syndrome and acute cardioembolic ischemic stroke.
    World J Clin Cases 2017 Mar;5(3):93-101
    Adrià Arboix, Division of Cerebrovascular, Universitat de Barcelona, 08029 Barcelona, Spain.
    Bayés syndrome is an under-recognized clinical condition characterized by advanced interatrial block. Bayés syndrome is a subclinical disease that manifests electrocardiographically as a prolonged P wave duration > 120 ms with biphasic morphology ± in the inferior leads. The clinical relevance of Bayés syndrome lies in the fact that is a clear arrhythmological syndrome and has a strong association with supraventricular arrhythmias, particularly atypical atrial flutter and atrial fibrillation. Read More

    Voltage-directed cavo-tricuspid isthmus ablation using a novel ablation catheter mapping technology in a myotonic dystrophy type I patient.
    Acta Myol 2016 Oct;35(2):109-113
    Second University of Naples, Monaldi Hospital, Naples, Italy.
    A successful case of maximum voltage-directed cavo-tricuspid isthmus (CTI) ablation using a novel ablation catheter mapping technology in a myotonic dystrophy type I (DM1) patient is reported. The patient complained recurrent episodes of atrial flutter, revealed by the atrio-ventricular electrograms analysis during the routine pacemaker controls. Read More

    Safety of fluoroscopy-guided transseptal approach for ablation of left-sided arrhythmias.
    Europace 2017 Mar 10. Epub 2017 Mar 10.
    Department of Cardiology, Karolinska Institute, Karolinska University Hospital, Stockholm, Sweden.
    Aims: The transseptal approach is used for left atrial access during the ablation of atrial fibrillation (AF) and other left-sided arrhythmia substrates. Transseptal puncture (TP) is commonly performed with fluoroscopic guidance, contrast injection, and pressure monitoring. In many centres, additional techniques [intracardiac echocardiography (ICE), transoesophageal echocardiography (TEE), radiofrequency needle] are used to facilitate TP but its use adds costs. Read More

    Peri-mitral atrial flutter: personalized ablation strategy based on arrhythmogenic substrate.
    Europace 2017 Mar 1. Epub 2017 Mar 1.
    Department of Cardiology, the First Affiliated Hospital of Nanjing Medical University, 300 Guangzhou Road, Nanjing, 210029, China.
    Aims: The aim of this study is to characterize the arrhythmogenic substrate for peri-mitral atrial flutter (PMAFL), thereby determining a personalized ablation strategy to treat PMAFL.

    Methods And Results: Thirty-six consecutive PMAFL patients (mean age: 63.8 ± 11. Read More

    Outcomes of atrial arrhythmia radiofrequency catheter ablation in patients with Ebstein's anomaly.
    Europace 2017 Feb 27. Epub 2017 Feb 27.
    Department of Cardiovascular Diseases, Mayo Clinic, 200 First St, Rochester, MN 55905, USA.
    Aims: Atrial arrhythmias are common in patients with Ebstein's anomaly (EA) despite cardiac surgical repair and concomitant Maze procedures. We aimed to evaluate the outcome of radiofrequency catheter ablation in this group of patients.

    Methods And Results: All patients with EA and atrial arrhythmias who underwent catheter ablation for atrial arrhythmias between 1/1999 and 1/2016 were included. Read More

    Downstream overdrive pacing and intracardiac concealed fusion to guide rapid identification of atrial tachycardia after atrial fibrillation ablation.
    Europace 2017 Feb 17. Epub 2017 Feb 17.
    Cardiovascular Division, Brigham and Women's Hospital, Boston, MA, USA.
    Aims: Atrial tachycardia (AT) related to atrial fibrillation (AF) ablation frequently poses a diagnostic challenge. Downstream overdrive pacing (DOP) can be used to rapidly detect reentry and assess proximity of a pacing site to an AT circuit or focus. We hypothesized that systematic DOP using multielectrode catheters would facilitate AT mapping. Read More

    Incidence and clinical predictors of subsequent atrial fibrillation requiring additional ablation after cavotricuspid isthmus ablation for typical atrial flutter.
    Scand Cardiovasc J 2017 Jun 23;51(3):123-128. Epub 2017 Mar 23.
    b Department of Heart Disease , Haukeland University Hospital , Bergen , Norway.
    Objectives: We sought to investigate the incidence of atrial fibrillation after catheter ablation for typical atrial flutter and to determine the predictors for symptomatic atrial fibrillation that required a further additional dedicated ablation procedure.

    Design: 127 patients underwent elective cavotricuspid isthmus ablation with the indication of symptomatic, typical atrial flutter. The occurrence of atrial flutter, atrial fibrillation, cerebrovascular events and the need for additional ablation procedures for symptomatic atrial fibrillation was assessed during long-term follow-up. Read More

    Long-term symptom improvement and patient satisfaction following catheter ablation of supraventricular tachycardia: insights from the German ablation registry.
    Eur Heart J 2017 May;38(17):1317-1326
    Stiftung Institut für Herzinfarktforschung (IHF), Ludwigshafen, Germany.
    Aims: To analyse outcomes of supraventricular tachycardia (SVT) ablations performed within a prospective German Ablation Quality Registry.

    Methods And Results: Data from 12 566 patients who underwent catheter ablation of SVT between January 2007 and January 2010 to treat atrial fibrillation (AFIB, 37.2% of procedures), atrial flutter (AFL, 29. Read More

    Outcomes of cardiac resynchronization therapy in patients with intermittent atrial fibrillation or atrial flutter in the COMPANION trial.
    Heart Rhythm 2017 Jun 18;14(6):858-865. Epub 2017 Mar 18.
    Veterans Affairs Hospital, Washington, District of Columbia. Electronic address:
    Background: Controlled clinical trial data are lacking for cardiac resynchronization therapy (CRT) outcomes in patients with advanced heart failure (HF) from reduced left ventricular ejection fraction (HFrEF) and intermittent atrial fibrillation or flutter (IAF/AFL).

    Objective: The purpose of this study was to describe CRT outcomes in patients with IAF/AFL and advanced HF.

    Methods: HF outcomes in patients in the COMPANION (Comparison of Medical Therapy, Pacing, and Defibrillation in Heart Failure) trial with New York Heart Association class III or IV HFrEF, left ventricular ejection fraction ≤0. Read More

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