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left atrial appendage management

Antonio H Frangieh, Jasmina Alibegovic, Christian Templin, Oliver Gaemperli, Slayman Obeid, Robert Manka, Erik W Holy, Willibald Maier, Thomas F Lüscher, Ronald K Binder
BACKGROUND: Left atrial appendage occlusion (LAAO) is mostly performed by transesophageal echocardiography (TEE) guidance. Intracardiac echocardiography (ICE) may be an alternative imaging modality for LAAO that precludes the need for general anesthesia or sedation. METHODS AND RESULTS: All consecutive single center, single operator LAAO candidates were analyzed. Baseline clinical and procedural characteristics and in-hospital outcomes were compared between patients in whom a Watchman was implanted with ICE vs...
September 21, 2016: Catheterization and Cardiovascular Interventions
Jonathan P Piccini, Horst Sievert, Manesh R Patel
Atrial fibrillation (AF) is a worldwide epidemic associated with significant morbidity and mortality, often due to disabling or fatal thromboembolic stroke. Oral anticoagulation is highly effective at preventing ischaemic stroke and improving all-cause survival in patients with non-valvular AF. Despite the efficacy of oral anticoagulation, many patients are not treated due to either absolute or perceived contraindications to therapy, including bleeding. Left atrial appendage (LAA) closure has emerged as a mechanical alternative to pharmacologic stroke prevention...
September 13, 2016: European Heart Journal
Vivian Wing-Yan Lee, Ronald Bing-Ching Tsai, Ines Hang-Iao Chow, Bryan Ping-Yen Yan, Mehmet Gungor Kaya, Jai-Wun Park, Yat-Yin Lam
BACKGROUND: Transcatheter left atrial appendage occlusion (LAAO) is a promising therapy for stroke prophylaxis in non-valvular atrial fibrillation (NVAF) but its cost-effectiveness remains understudied. This study evaluated the cost-effectiveness of LAAO for stroke prophylaxis in NVAF. METHODS: A Markov decision analytic model was used to compare the cost-effectiveness of LAAO with 7 pharmacological strategies: aspirin alone, clopidogrel plus aspirin, warfarin, dabigatran 110 mg, dabigatran 150 mg, apixaban, and rivaroxaban...
2016: BMC Cardiovascular Disorders
Saeid Hosseini, Arash Hashemi, Sedigheh Saedi, Farshad Jalili, Majid Maleki, Rozita Jalalian, Yousef Rezaei
Left atrial appendage aneurysms (LAAA) are extremely rare. This condition is usually diagnosed incidentally or after the occurrence of thrombotic events or cardiac tachyarrhythmias in the second to fourth decades of life. It can predispose to hazardous adverse events, including atrial fibrillation, myocardial infarction, and systemic thromboembolism. We report a case of LAAA in a 68-year-old woman presenting with atypical chest pain, exertional dyspnea, and episodes of sudden-onset palpitation. Aneurysmectomy with the patient under cardiac arrest with cardiopulmonary bypass was performed...
September 2016: Annals of Thoracic Surgery
Ammar M Killu, Erin A Fender, Abhishek J Deshmukh, Thomas M Munger, Philip Araoz, Peter A Brady, Yong-Mei Cha, Douglas L Packer, Paul A Friedman, Samuel J Asirvatham, Peter A Noseworthy, Siva K Mulpuru
BACKGROUND: Many patients with atrial fibrillation (AF) or atrial flutter (Aflutter) have concomitant sinus node dysfunction (SND). Ablation may result in injury to the sinus node complex or its blood supply resulting in sinus arrest and need for temporary pacing. We sought to characterize patients who develop acute SND (ASND) during/immediately after AF/Aflutter ablation. METHODS: We performed a retrospective analysis of AF/Aflutter ablation patients between January 1, 2010 and February 28, 2015 to characterize those who required temporary pacemaker (TPM) implantation due to ASND (sinus arrest, sinus bradycardia <40 beats/min, or junctional rhythm with hemodynamic compromise) following atrial ablation...
October 2016: Pacing and Clinical Electrophysiology: PACE
Arash Aryana, André d'Avila
Incomplete left atrial appendage closure (LAAC) occurs in ∼30-40 % of cases following both surgical and percutaneous closure methods. Incomplete surgical LAAC may further be classified as incompletely surgically ligated LAA (ISLL) or LAA stump. ISLL is associated with a significantly increased risk of thrombus formation/thromboembolism. Moreover, this risk is highest in the absence of oral anticoagulation (OAC) and inversely correlates with the size of the ISLL neck. Not only routine screening for ISLL seems critical, but also long-term OAC should strongly be considered in this high-risk cohort...
September 2016: Current Cardiology Reports
Sachin Talwar, Manikala Vinod Kumar, Amolkumar Bhoje, Shiv Kumar Choudhary, Shyam Sunder Kothari, Rajnish Juneja, Anita Saxena, Balram Airan
OBJECTIVES: In developing countries, where patients present late, the atrial switch operation is still a preferred palliation for d-transposition of great arteries (d-TGA). In this report, we present our experience in patients with d-TGA who were 5 years of age or older. METHODS: Twenty-seven patients underwent an atrial switch procedure between January 2004 and December 2014. The standard technique consisted of a combination of the Senning and Mustard's repair with Schumacker's in situ modification for construction of the pulmonary venous baffle...
July 17, 2016: Interactive Cardiovascular and Thoracic Surgery
Manoj Thangam, Sriram Nathan, Biswajit Kar, Marija Petrovic, Manish Patel, Pranav Loyalka, L Maximilian Buja, Igor D Gregoric
We discuss the case of a 38-year-old black man who presented at our hospital with his first episode of syncope, recently developed atrial arrhythmias refractory to pharmacologic therapy, and a left atrial thrombus. He was diagnosed with primary cardiac sarcoidosis characterized by predominant involvement of the epicardium that caused atrial fibrillation and atrial flutter. Histologic analysis of his epicardial lesions yielded a diagnosis of sarcoidosis. This patient's atrial arrhythmia was successfully treated with a hybrid operation that involved resection of his atrial appendage, an Epicor maze procedure, and radiofrequency ablation during a catheter-based electrophysiologic study...
June 2016: Texas Heart Institute Journal
Cátia Costa, Teresa González-Alujas, Filipa Valente, Carlos Aranda, José Rodríguez-Palomares, Laura Gutierrez, Giuliana Maldonado, Laura Galian, Gisela Teixidó, Artur Evangelista
BACKGROUND: Left atrial deformation (LAD) parameters are new markers of atrial structural remodelling that seem to be affected in atrial fibrillation (AF) and atrial flutter (AFL). This study aimed to determine whether LAD can identify patients with a higher risk of thrombosis and unsuccessful electrical cardioversion (ECV). METHODS: Retrospective study including 56 patients with AF or AFL undergoing ECV, with previous transthoracic (TTE) and transoesophageal echocardiography (TEE) studies...
June 2016: Echo Research and Practice
Amr F Barakat, Ayman A Hussein, Walid I Saliba, Mohammed Bassiouny, Khaldoun Tarakji, Mohamed Kanj, Wael Jaber, L Leonardo Rodriguez, Richard Grimm, M Shazam Hussain, Andrew Russman, Ken Uchino, Dolora Wisco, Peter Rasmussen, Mark Bain, John Vargo, Gregory Zuccaro, David Gottesman, Bruce D Lindsay, Oussama M Wazni
BACKGROUND: The implantation of left atrial appendage closure device (WATCHMAN, Boston Scientific, Natick, MA) is an alternative option to oral anticoagulation (OAC) for stroke prevention in atrial fibrillation. Patients require short-term OAC after implantation to avoid device thrombosis. The 2 clinical trials that assessed this device excluded patients thought not to be candidates for OAC. As such, little is known about the safety of this strategy in patients with previous major bleeding events...
June 2016: Circulation. Arrhythmia and Electrophysiology
Carola Gianni, Luigi Di Biase, Chintan Trivedi, Sanghamitra Mohanty, Yalçın Gökoğlan, Mahmut F Güneş, Rong Bai, Amin Al-Ahmad, J David Burkhardt, Rodney P Horton, Andrew K Krumerman, Eugen C Palma, Miguel Valderrábano, Douglas Gibson, Matthew J Price, Andrea Natale
OBJECTIVES: The aim of this study was to evaluate the incidence and clinical implications of leaks (acute incomplete occlusion, early and late reopenings) following LAA ligation with the LARIAT device. BACKGROUND: Percutaneous LAA ligation with the LARIAT device may represent an alternative for stroke prevention in high-risk patients with atrial fibrillation with contraindications to oral anticoagulation. METHODS: This was a retrospective, multicenter study of 98 consecutive patients undergoing successful LAA ligation with the LARIAT device...
May 23, 2016: JACC. Cardiovascular Interventions
Giuseppe Patti, Vittorio Pengo, Rossella Marcucci, Plinio Cirillo, Giulia Renda, Francesca Santilli, Paolo Calabrò, Alberto Ranieri De Caterina, Ilaria Cavallari, Elisabetta Ricottini, Vito Maurizio Parato, Giacomo Zoppellaro, Giuseppe Di Gioia, Pietro Sedati, Vincenzo Cicchitti, Giovanni Davì, Enrica Golia, Ivana Pariggiano, Paola Simeone, Rosanna Abbate, Domenico Prisco, Marco Zimarino, Francesco Sofi, Felicita Andreotti, Raffaele De Caterina
The left atrial appendage (LAA) is the main source of thromboembolism in patients with non-valvular atrial fibrillation (AF). As such, the LAA can be the target of specific occluding device therapies. Optimal management of patients with AF includes a comprehensive knowledge of the many aspects related to LAA structure and thrombosis. Here we provide baseline notions on the anatomy and function of the LAA, and then focus on current imaging tools for the identification of anatomical varieties. We also describe pathogenetic mechanisms of LAA thrombosis in AF patients, and examine the available evidence on treatment strategies for LAA thrombosis, including the use of non-vitamin K antagonist oral anticoagulants and interventional approaches...
April 26, 2016: European Heart Journal
Tarun Jain, Jainil Shah, Sunay Shah, Shalini Modi
Device based closure of the left atrial appendage (LAA) has emerged as a viable approach for stroke prevention in atrial fibrillation (AF) patients with contraindications to chronic oral anticoagulation. One of the most feared complications is device related thrombus formation. We present a 66-year-old male with chronic AF who developed a life-threatening intracranial bleed on oral anti-coagulation. He subsequently underwent LAA closure using an Amplatzer muscular ventricular septal defect closure device for stroke prevention...
March 2016: Journal of Cardiovascular Ultrasound
Florentino Lupercio, Juan Carlos Ruiz, David F Briceno, Jorge Romero, Pedro A Villablanca, Cecilia Berardi, Robert Faillace, Andrew Krumerman, John D Fisher, Kevin Ferrick, Mario Garcia, Andrea Natale, Luigi Di Biase
BACKGROUND: Thromboembolic event (TE) risk stratification is performed by using CHA2DS2VASc score. It has been suggested that left atrial appendage (LAA) morphology independently influences TE risk in patients with nonvalvular atrial fibrillation. LAA morphology has been classified into 4 types: chicken wing, cauliflower, windsock, and cactus. OBJECTIVE: The purpose of this study was to determine TE risk for each LAA morphology in patients with atrial fibrillation with low to intermediate TE risk...
July 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
I C Van Gelder, A H Hobbelt, E G Marcos, U Schotten, R Cappato, T Lewalter, J Schwieler, M Rienstra, G Boriani
Atrial fibrillation (AF) is not benign. Cardiovascular diseases and risk factors differ importantly amongst patients. Careful phenotyping with the aim to start tailored therapy may improve outcome and quality of life. Furthermore, structural remodelling plays an important role in initiation and progression of AF. Therapies that interfere in the remodelling processes are promising because they may modify the atrial substrate. However, success is still limited probably due to variations in the underlying substrate in individual patients...
May 2016: Journal of Internal Medicine
Faisal F Syed, Christopher V DeSimone, Paul A Friedman, Samuel J Asirvatham
Percutaneous left atrial appendage (LAA) closure is being increasingly used as a treatment strategy to prevent stroke in patients with atrial fibrillation (AF) who have contraindications to anticoagulants. Several approaches and devices have been developed in the last few years, each with their own unique set of advantages and disadvantages. In this article, the published studies on surgical and percutaneous approaches to LAA closure are reviewed, focusing on stroke mechanisms in AF, LAA structure and function relevant to stroke prevention, practical differences in procedural approach, and clinical considerations surrounding management...
April 2016: Heart Failure Clinics
Hena Patel, Stephen Boateng, Gurpreet Singh, Steven Feinstein
UNLABELLED: Spontaneous echo contrast (SEC) is frequently observed in patients with structural and functional cardiovascular abnormalities. Literature describes cases of SEC either from agglutination of red blood cells and plasma proteins or from microcavitations. SEC secondary to the former is an independent predictor of future thromboembolic events and is most commonly observed in the left atrium or left atrial appendage. Thus, many authors reason that left atrial SEC is an indication for initiating anticoagulant therapy...
September 1, 2015: Echo Research and Practice
Muhamed Saric, Alicia C Armour, M Samir Arnaout, Farooq A Chaudhry, Richard A Grimm, Itzhak Kronzon, Bruce F Landeck, Kameswari Maganti, Hector I Michelena, Kirsten Tolstrup
Embolism from the heart or the thoracic aorta often leads to clinically significant morbidity and mortality due to transient ischemic attack, stroke or occlusion of peripheral arteries. Transthoracic and transesophageal echocardiography are the key diagnostic modalities for evaluation, diagnosis, and management of stroke, systemic and pulmonary embolism. This document provides comprehensive American Society of Echocardiography guidelines on the use of echocardiography for evaluation of cardiac sources of embolism...
January 2016: Journal of the American Society of Echocardiography
Walter Serra, Mauro Li Calzi, Paolo Coruzzi
Electric external cardioversion (EEC) for permanent atrial fibrillation (AF) carries a risk of thromboembolic events (TE). The use of transesophageal echocardiography (TEE) to guide the management of atrial fibrillation may be considered a clinically effective alternative strategy to conventional therapy for patients in whom elective cardioversion is planned. Therapeutic anticoagulation with novel oral anticoagulants (NOAC) is recommended for 3 to 4 weeks before and an anticoagulation life-long therapy is recommended after EEC to reduce TE, in patients with high CHA2DS2-VASc score; however, only few data are currently available about safety of short-term anticoagulation with NOAC in the setting of EEC...
September 28, 2015: Clinics and Practice
Didier Klug, Philippe Commeau, Pascal Defaye, Jean-Benoît Thambo, Daniel Gras, Pierre Aubry, Jean-Luc Pasquie, Patrice Guerin, Emmanuel Teiger, René Koning, Olivier Piot
Atrial fibrillation (AF) is the most common rhythm disturbance. Among the major thromboembolic complications associated with AF, strokes are foremost, with a 4.4% yearly incidence in the absence of preventive treatment. Therefore, the prevention of these embolic accidents is a priority. While proof of the efficacy of oral anticoagulants (OACs) for this indication is long-standing and convincing, they are associated with haemorrhagic complications. Consequently, their prescription is based on an estimate of the risk (haemorrhagic complications)/benefit (thromboembolic prevention) ratio...
August 2015: Archives of Cardiovascular Diseases
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