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https://www.readbyqxmd.com/read/29677021/pericardial-patch-exclusion-technique-for-left-atrial-appendage-closure
#1
Olivia K Ginty, Feras H Khaliel, Corey Adams, Michael W A Chu
We describe a technique of left atrial appendage occlusion that consists of autologous pericardial patch closure of the left atrial appendage orifice from within the left atrium. This pericardial patch exclusion technique has little added risk of bleeding, can be performed through sternotomy or right minithoracotomy, and can be used in re-operative situations.
April 19, 2018: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/29676485/evaluation-of-the-left-atrial-appendage-by-real-time-three-dimensional-transesophageal-echocardiography-online
#2
Juan Zhang, Cun-Ying Cui, Dan-Qing Huang, Yuan-Yuan Liu, Yun-Yun Qin, Lian-Zhong Zhang, Lin Liu
OBJECTIVE: The objective of this study was to evaluate the feasibility of online real time three-dimensional transesophageal echocardiography (RT3DTEE) in the measurement of left atrial appendage (LAA) orifice size. We also analyzed the correlation between LAA ejection fraction (EF) and its peak empty velocity (PEV). METHODS: There were 91 subjects enrolled in this study, with 46 patients with AF and 45 individuals with sinus rhythm (SR). RT3DTEE was performed by four methods including iSlice and iCrop online and QLAB software 3DQ and GI-3DQ off-line which were used to measure LAA orifice area, long diameter, short diameter, depth in the largest LAA, and number of LAA lobes...
April 20, 2018: Echocardiography
https://www.readbyqxmd.com/read/29670888/computational-fluid-dynamic-analysis-of-the-left-atrial-appendage-to-predict-thrombosis-risk
#3
Giorgia Maria Bosi, Andrew Cook, Rajan Rai, Leon J Menezes, Silvia Schievano, Ryo Torii, Gaetano Burriesci
During Atrial Fibrillation (AF) more than 90% of the left atrial thrombi responsible for thromboembolic events originate in the left atrial appendage (LAA), a complex small sac protruding from the left atrium (LA). Current available treatments to prevent thromboembolic events are oral anticoagulation, surgical LAA exclusion, or percutaneous LAA occlusion. However, the mechanism behind thrombus formation in the LAA is poorly understood. The aim of this work is to analyse the hemodynamic behaviour in four typical LAA morphologies - "Chicken wing", "Cactus", "Windsock" and "Cauliflower" - to identify potential relationships between the different shapes and the risk of thrombotic events...
2018: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/29667208/the-use-of-cardiac-ct-alone-to-exclude-left-atrial-thrombus-before-atrial-fibrillation-ablation-efficiency-safety-and-cost-analysis
#4
Wassim Mosleh, Ali Sheikh, Zaid Said, Mohamed A Abdel-Aal, Siri Gadde, Tanvi Shah, Michael F Wilson, Hiroko Beck, Chee Kim, Umesh C Sharma
BACKGROUND: Atrial fibrillation (AF) is a growing financial burden on the healthcare system. Cardiac computed tomographic angiography (CCTA) is needed for pulmonary vein mapping before AF ablation (AFA). CCTA has shown to be an alternative to transesophageal echocardiogram (TEE) to rule-out left atrial appendage thrombus (LAAT) pre-AFA. We aim to examine the safety, cost-effectiveness, and time-efficiency of utilizing CCTA alone to rule out LAAT before AFA. METHODS: We prospectively screened patients with paroxysmal AF undergoing cryoablation...
April 17, 2018: Pacing and Clinical Electrophysiology: PACE
https://www.readbyqxmd.com/read/29666031/measurement-of-left-atrial-volume-by-2d-and-3d-non-contrast-computed-tomography-compared-with-cardiac-magnetic-resonance-imaging
#5
Maise Høigaard Fredgart, Rasmus Carter-Storch, Jacob Eifer Møller, Kristian Altern Øvrehus, Redi Pecini, Jordi Sanchez Dahl, Oke Gerke, Roudyna Ahmad Alturkmany, Axel Brandes, Jes Sanddal Lindholt, Axel Cosmus Pyndt Diederichsen
BACKGROUND: Cardiac magnetic resonance imaging (MRI) is considered the gold standard for assessment of left atrial (LA) volume. We assessed the feasibility of evaluating LA volume using 3D non-contrast computed tomography (NCCT). Furthermore, since manual tracing of LA volume is time consuming, we evaluated the accuracy of the LA area using 2D NCCT imaging for LA volume assessment. METHODS: MRI and NCCT imaging were performed in 69 patients before and one year after aortic valve replacement...
April 10, 2018: Journal of Cardiovascular Computed Tomography
https://www.readbyqxmd.com/read/29663763/catheter-based-left-atrial-appendage-closure
#6
Ketil Lunde, Ahmed Al-Ani, Reidar Bjørnerheim, Anders Hervold, Anders Opdahl, Jan Otto Beitnes
BAKGRUNN: Atrieflimmer er en vanlig tilstand i befolkningen og gir økt risiko for hjerneslag. Antikoagulasjonsbehandling er effektivt for å forebygge tromboembolisme ved atrieflimmer, men av ulike grunner blir mange atrieflimmerpasienter med indikasjon for antikoagulasjonsbehandling ikke behandlet. Kateterbasert lukking av venstre atriums aurikkel er en ny metode for å forebygge hjerneslag ved atrieflimmer. MATERIALE OG METODE: I perioden september 2014-april 2016 gjennomgikk 27 pasienter med atrieflimmer og høy risiko for hjerneslag forsøk på kateterbasert lukking av venstre atriums aurikkel ved Oslo universitetssykehus...
April 17, 2018: Tidsskrift for Den Norske Lægeforening: Tidsskrift for Praktisk Medicin, Ny Række
https://www.readbyqxmd.com/read/29662815/the-treatment-of-left-atrial-appendage-aneurysm-by-a-minimally-invasive-approach
#7
Young Woong Kim, Ho Jin Kim, Min Ho Ju, Jae Won Lee
Left atrial appendage (LAA) aneurysm is a rare, pathologic condition that may lead to atrial tachyarrhythmia or thromboembolic events. A 49-year-old man presented with aggravated palpitation and dizziness. He suffered from refractory atrial fibrillation despite a previous history of radiofrequency catheter ablation. Echocardiography revealed a 57-mm LAA aneurysm. Surgical ablation was performed through a right mini-thoracotomy, and the LAA aneurysm was obliterated with a 50-mm AtriClip (Atricure Inc., Westchester, OH, USA)...
April 2018: Korean Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29659784/left-atrial-geometry-and-outcome-of-atrial-fibrillation-ablation-results-from-the-multicentre-lago-af-study
#8
Felipe Bisbal, Francisco Alarcón, Angel Ferrero-de-Loma-Osorio, Juan Jose González-Ferrer, Concepción Alonso, Marta Pachón, Helena Tizón, Pilar Cabanas-Grandío, Manuel Sanchez, Eva Benito, Albert Teis, Ricardo Ruiz-Granell, Julián Pérez-Villacastín, Xavier Viñolas, Miguel Angel Arias, Ermengol Vallés, Enrique García-Campo, Ignacio Fernández-Lozano, Roger Villuendas, Lluís Mont
Aims: Left atrial (LA) remodelling is a key determinant of atrial fibrillation (AF) ablation outcome. Optimal methods to assess this process are scarce. LA sphericity is a shape-based parameter shown to be independently associated to procedural success. In a multicentre study, we aimed to test the feasibility of assessing LA sphericity and evaluate its capability to predict procedural outcomes. Methods and results: This study included consecutive patients undergoing first AF ablation during 2013...
April 12, 2018: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29658867/repair-of-partial-anomalous-pulmonary-venous-connection-a-rare-case-evaluated-by-multi-slice-computed-tomographic-angiography
#9
Yukun Cao, Tin Yang, Ma Hou, Hongcha Zhang, Xi Chen, Fe Zou
Partial anomalous pulmonary venous connection (PAPVC) is an uncommon congenital heart disease, which may be difficult to identify and often remains undiagnosed. Accurate diagnosis of major aortopulmonary collaterals and partial anomalous pulmonary venous drainage in patients with congenital heart disease is important but problematic. The goal of this publication is to present the diagnosis and surgical repair of this rare pathology in an eight-year-old boy. Atrial septal defect was found by echocardiography, but no anomalous pulmonary vein was found...
March 8, 2018: Heart Surgery Forum
https://www.readbyqxmd.com/read/29652284/inverted-left-atrial-appendage-during-minimally-invasive-mitral-valve-repair
#10
Kazuto Miyata, Sayaka Shigematsu
Inverted left atrial appendage (LAA) is a rare complication in cardiac surgery. The echocardiographic appearance often leads to misdiagnosis of thrombus or some other cardiac mass. Patients misdiagnosed in this way often undergo unnecessary anticoagulation or surgical treatment. Recently, minimally invasive mitral valve surgery (MIMVS) has become more widespread. However, as the incision for MIMVS through the right thoracotomy is very small, the inverted LAA is not within the surgical field of the cardiac surgeon...
April 2018: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/29650978/percutaneous-closure-of-left-atrial-appendage-significantly-affects-lipidome-metabolism
#11
G Yücel, M Behnes, C Barth, A Wenke, B Sartorius, K Mashayekhi, B Yazdani, T Bertsch, J Rusnak, A Saleh, U Hoffmann, C Fastner, S Lang, X Zhou, K Sattler, M Borggrefe, I Akin
Patients with non-valvular atrial fibrillation (AF) and a high risk for oral anticoagulation can be treated by percutaneous implantation of left atrial appendage occlusion devices (LAAC) to reduce the risk of cardio-embolic stroke. This study evaluates whether LAAC may influence lipid metabolism, which has never been investigated before. Patients with successful LAAC were included consecutively. Venous peripheral blood samples of patients were collected immediately before (T0, baseline) and 6 months after (T1, mid-term) LAAC...
April 12, 2018: Scientific Reports
https://www.readbyqxmd.com/read/29648705/a-rare-giant-congenital-left-atrial-appendage-aneurysm-in-a-1-day-old-newborn
#12
Derya Aydin Sahin, Selman Vefa Yildirim, Murat Ozkan
Congenital left atrial appendage aneurysm (LAAA) is a very rare condition and occurs as a result of congenital dysplasia of musculi pectinate. These patients may be asymptomatic and/or may present with dyspnea, and thromboembolic events. The most common complications are life-threatening thromboembolic events and supraventricular tachyarrhythmias. Transthoracic echocardiography plays a very important role in the diagnosis of LAAA. Herein, we present a rare case of giant congenital LAAA.
April 12, 2018: Echocardiography
https://www.readbyqxmd.com/read/29629551/totally-thoracoscopic-left-atrial-occlusion-concomitant-to-endoscopic-atraumatic-coronary-artery-bypass-grafting-eacab
#13
Piotr Suwalski, Anna Witkowska
Atrial fibrillation, as the most prevalent arrhythmia, has more impact on morbidity and mortality than any other rhythm disorder. It is often concomitant with structural heart diseases like coronary artery disease. The worst complication of atrial fibrillation is stroke, but the double or triple antithrombotic therapy especially in fragile and elderly patients is associated with significant risk of bleeding. The left atrial appendage occlusion may reduse both the risk of stroke and drug intake. Here we present, to our knowledge, the first description of a simultaneous totally thoracoscopic 3D augmented coronary artery bypass grafting and left atrial appendage occlusion...
March 15, 2018: Multimedia Manual of Cardiothoracic Surgery: MMCTS
https://www.readbyqxmd.com/read/29628346/concomitant-surgical-closure-of-left-atrial-appendage-a-systematic-review-and-meta-analysis
#14
Masahiko Ando, Masaki Funamoto, Duke E Cameron, Thoralf M Sundt
OBJECTIVES: Although percutaneous closure of the left atrial appendage is supported as a potential alternative to lifelong anticoagulation in patients with atrial fibrillation, comprehensive evidence on surgical left atrial appendage closure in heart surgery is limited. METHODS: We conducted a meta-analysis of studies comparing patients who underwent open cardiac surgery with or without left atrial appendage closure. A literature search was performed on PubMed, Embase, and Cochrane Trials databases...
March 12, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29623540/patient-specific-catheter-shaping-for-the-minimally-invasive-closure-of-the-left-atrial-appendage
#15
Eva C Graf, Ilka Ott, Julian Praceus, Felix Bourier, Tim C Lueth
PURPOSE: The minimally invasive closure of the left atrial appendage is a promising alternative to anticoagulation for stroke prevention in patients suffering from atrial fibrillation. One of the challenges of this procedure is the correct positioning and the coaxial alignment of the tip of the catheter sheath to the implant landing zone. METHOD: In this paper, a novel preoperative planning system is proposed that allows patient-individual shaping of catheters to facilitate the correct positioning of the catheter sheath by offering a patient-specific catheter shape...
April 5, 2018: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/29622180/roles-of-transesophageal-echocardiography-and-cardiac-computed-tomography-for-evaluation-of-left-atrial-thrombus-and-associated-pathology-a-review-and-critical-analysis
#16
REVIEW
Faraz Pathan, Harvey Hecht, Jagat Narula, Thomas H Marwick
Evaluation of the left atrium and left atrial appendage for the presence of thrombus prior to cardioversion and pulmonary vein isolation, and of the entire heart for embolic sources in the setting of cryptogenic stroke, has long been standard medical care. Guidelines have uniformly recommended transesophageal echocardiography (TEE) to accomplish these goals. In recent years, computed tomographic angiography has demonstrated diagnostic accuracy similar to that of TEE for the detection of thrombus. Analysis of the pertinent data and relative merits of the 2 technologies leads to the conclusions that: 1) both modalities have some unique, nonoverlapping capabilities that may dictate their use in specific situations; 2) computed tomographic angiography is a reasonable alternative to TEE when the primary aim is to exclude left atrial and left atrial appendage thrombus and in patients in whom the risks associated with TEE outweigh the benefits; and 3) both options should be discussed with the patient in the setting of shared decision making...
April 2018: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29622160/left-atrial-appendage-occlusion-device-related-thrombus-certainties-and-uncertainties
#17
EDITORIAL
Miguel Valderrábano
No abstract text is available yet for this article.
April 10, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29622159/device-related-thrombosis-after-percutaneous-left-atrial-appendage-occlusion-for-atrial-fibrillation
#18
Laurent Fauchier, Alexandre Cinaud, François Brigadeau, Antoine Lepillier, Bertrand Pierre, Selim Abbey, Marjaneh Fatemi, Frederic Franceschi, Paul Guedeney, Peggy Jacon, Olivier Paziaud, Sandrine Venier, Jean Claude Deharo, Daniel Gras, Didier Klug, Jacques Mansourati, Gilles Montalescot, Olivier Piot, Pascal Defaye
BACKGROUND: Transcatheter left atrial appendage (LAA) occlusion is an alternative strategy for stroke prevention in patients with atrial fibrillation (AF). OBJECTIVES: This study sought to determine the incidence, predictors, and prognosis of thrombus formation on devices in patients with AF who were treated with LAA closure. METHODS: The study retrospectively analyzed data from patients treated with 2 LAA closure devices seen in 8 centers in France from February 2012 to January 2017...
April 10, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29615335/does-left-atrial-appendage-ligation-during-coronary-bypass-surgery-decrease-the-incidence-of-postoperative-stroke
#19
Yen-Yi Juo, Katherine Lee Bailey, Young-Ji Seo, Esteban Aguayo, Peyman Benharash
OBJECTIVE: The study objective was to evaluate the association between surgical left atrial appendage ligation and in-hospital stroke incidence after coronary artery bypass grafting among patients with atrial fibrillation. METHODS: A retrospective cohort study was performed by using the Nationwide Inpatient Sample between 2008 and 2014. All atrial fibrillation patients who underwent coronary artery bypass graft were included and categorized as left atrial appendage ligation or control group...
March 12, 2018: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/29611829/a-left-ventricle-to-left-atrial-appendage-fistula-after-mitral-valve-replacement
#20
Yafen Liang, Bantayehu Sileshi, Clayton A Kaiser, Mias Pretorius, Andrew D Shaw
No abstract text is available yet for this article.
March 1, 2018: A&A practice
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