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https://www.readbyqxmd.com/read/29330651/3d-computed-tomography-to-compare-the-dimensions-of-the-left-atrial-appendage-in-patients-with-normal-sinus-rhythm-and-those-with-paroxysmal-atrial-fibrillation
#1
Maiko Hozawa, Yoshihiro Morino, Yuki Matsumoto, Ryoichi Tanaka, Kyohei Nagata, Akiko Kumagai, Atsushi Tashiro, Akio Doi, Kunihiro Yoshioka
Although paroxysmal atrial fibrillation (PAF) is an important cause of cardioembolic stroke, in contrast to chronic AF patients, the anatomical features of the left atrial appendage (LAA) in PAF patients remain unknown. Here, we investigated differences in LAA structures in patients with PAF and those with normal sinus rhythms (NSR) using 3D-computed tomography (3D-CT), which allows us to visualize complicated LAA structures at high spatial resolution. Study subjects were 30 consecutive PAF and 30 NSR patients with complete enhanced cardiac 3D-CT images available...
January 12, 2018: Heart and Vessels
https://www.readbyqxmd.com/read/29327638/hybrid-and-surgical-procedures-for-the-treatment-of-persistent-and-longstanding-persistent-atrial-fibrillation
#2
Jose M Sanchez, Ghannam Al-Dosari, Sherman Chu, Ramin Beygui, Tobias Deuse, Nitish Badhwar, Randall J Lee
Atrial fibrillation (AF) is the most common cardiac arrhythmia. The incidence of AF increases with age and is associated with increased stroke, heart failure and mortality. Persistent and long standing persistent AF is difficult to treat and often refractory to medical therapy and catheter ablation. Areas covered: This article reviews the historical development of the surgical Cox-MAZE procedure and current hybrid and minimally invasive surgical approaches for the treatment of persistent and long standing persistent AF...
January 12, 2018: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/29325636/left-atrial-appendage-closure-and-systemic-homeostasis-the-laa-homeostasis-study
#3
Dhanunjaya Lakkireddy, Mohit Turagam, Muhammad Rizwan Afzal, Johnson Rajasingh, Donita Atkins, Buddhadeb Dawn, Luigi Di Biase, Krzysztof Bartus, Saibal Kar, Andrea Natale, David J Holmes
BACKGROUND: The impact of left atrial appendage (LAA) exclusion, comparing an epicardial LAA or an endocardial LAA device, on systemic homeostasis remains unknown. OBJECTIVES: This study compared the effects of epicardial or endocardial LAA devices on the neurohormonal profiles of patients, emphasizing the roles of the renin-angiotensin-aldosterone system and the autonomic nervous system. METHODS: This is a prospective, single-center, observational study including 77 patients who underwent LAA closure by an epicardial (n = 38) or endocardial (n = 39) device...
January 16, 2018: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/29313819/real-world-safety-and-efficacy-of-watchman-laa-closure-at-one-year-in-patients-on-dual-antiplatelet-therapy-results-of-the-dapt-subgroup-from-the-ewolution-all-comers-study
#4
Martin W Bergmann, Hüseyin Ince, Stephan Kische, Thomas Schmitz, Felix Meincke, Boris Schmidt, David Foley, Timothy R Betts, Marek Grygier, Alexey V Protopopov, Kenneth M Stein, Lucas V A Boersma
AIMS: The study aims to confirm efficacy and safety of WATCHMAN LAA closure in AF patients unsuitable for oral anticoagulation. METHODS AND RESULTS: The EWOLUTION registry prospectively collects all clinical data on 1005 European patients implanted with a WATCHMAN device. Following the procedure, 605 patients (60.2%) received dual antiplatelet therapy according to the local standard; DAPT was discontinued in 85% of pts within 1 year. CHA2DS2-VASc and HAS-BLED scores were 4...
January 9, 2018: EuroIntervention
https://www.readbyqxmd.com/read/29304951/left-atrial-appendage-angiography-is-associated-with-the-incidence-and-number-of-magnetic-resonance-imaging-detected-brain-lesions-after-percutaneous-catheter-based-left-atrial-appendage-closure
#5
Andreas Rillig, Barbara Bellmann, Carsten Skurk, David Manuel Leistner, Karl Georg Haeusler, Tina Lin, Rohat Geran, Luzie Koehler, Selma Guttmann, Daniel Steffens, Mario Kasner, Philipp Jakob, Verena Tscholl, Mattias Roser, Klaus Lenz, Kersten Villringer, Jai-Wun Park, Jochen B Fiebach, Ulf Landmesser
BACKGROUND: Percutaneous catheter-based left atrial appendage closure (LAAC) is a procedure being increasingly performed in patients with atrial fibrillation and high bleeding risk. OBJECTIVE: The purpose of this study was to evaluate the incidence of magnetic resonance imaging (MRI)-detected acute brain lesions (ABLs) as well as potential changes in neurocognitive function after percutaneous LAAC in patients with atrial fibrillation. METHODS: Brain MRI at 3 T was performed within 24 hours before and after LAAC along with neurologic (National Institutes of Health Stroke Scale [NIHSS] score) and cognitive (Montreal Cognitive Assessment [MoCA] test) assessment...
January 2018: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29297907/-combined-left-atrial-appendage-percutaneous-closure-and-atrial-fibrillation-ablation-a-single-center-experience
#6
Elisa Pelissero, Marco Giuggia, Maria Chiara Todaro, Giuseppe Trapani, Benedetta Giordano, Gaetano Senatore
BACKGROUND: We evaluated long-term safety and efficacy of concomitant left atrial appendage (LAA) closure and atrial fibrillation (AF) ablation. METHODS: From February 2013 to June 2017, all patients referred for AF ablation and LAA closure (group 1) were enrolled in the study and compared with a matched control group undergoing AF ablation only (group 2). Pulmonary vein isolation was achieved in all cases with radiofrequency or cryoballoon. LAA was occluded with Watchman or Amplatzer Cardiac Plug or Amulet (ACP) devices...
December 2017: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/29289951/cardioembolic-stroke-in-patient-with-transcatheter-occluded-left-atrial-appendage
#7
Umberto Cucchini, Denisa Muraru, Luigi P Badano
A cerebral ischemic event in a patient managed with left atrial appendage (LAA) transcatheter obliteration is illustrated. Transesophageal echocardiography allowed identification and accurate definition of the LAA device leakage.
January 2018: Journal of Invasive Cardiology
https://www.readbyqxmd.com/read/29289004/parallel-assessment-of-marine-autotrophic-picoplankton-using-flow-cytometry-and-chemotaxonomy
#8
Marju Tamm, Peeter Laas, Rene Freiberg, Peeter Nõges, Tiina Nõges
Autotrophic picoplankton (0.2-2μm) can be a significant contributor to primary production and hence play an important role in carbon flow. The phytoplankton community structure in the Baltic Sea is very region specific and the understanding of the composition and dynamics of pico-size phytoplankton is generally poor. The main objective of this study was to determine the contribution of picoeukaryotic algae and their taxonomic composition in late summer phytoplankton community of the West-Estonian Archipelago Sea...
December 27, 2017: Science of the Total Environment
https://www.readbyqxmd.com/read/29287901/serum-levels-of-endocan-and-endoglin-are-associated-with-large-artery-atherosclerotic-stroke
#9
Xin-Wei He, Shao-Fa Ke, Yu-Yan Bao, Wei-Jun Hong, Yu-Guang Shen, Cai Li, Feng Zhu, En Wang, Xiao-Ping Jin
BACKGROUND: Accumulating evidence has suggested that endocan and endoglin may play important roles in cardiovascular disease. However, no previous study has focused on these circulating levels in patients with large-artery atherosclerotic (LAA) stroke. METHODS: Serum levels of endocan and endoglin in 114 patients with LAA stroke and 114 age- and sex-matched controls were measured by ELISA. Serum samples from patients were available on days 1 and 6 and in the 4th week after IS...
December 26, 2017: Clinica Chimica Acta; International Journal of Clinical Chemistry
https://www.readbyqxmd.com/read/29281559/left-atrial-abnormality-laa-as-a-predictor-of-ibrutinib-associated-atrial-fibrillation-in-patients-with-chronic-lymphocytic-leukemia
#10
Anthony R Mato, Suparna Clasen, Peter Pickens, Lisa Gashonia, Joanna Rhodes, Jakub Svoboda, Mitchell Hughes, Chadi Nabhan, Naveed Ali, Stephen Schuster, Joseph Carver
Results from several recent studies in chronic lymphocytic leukemia (CLL) have demonstrated an association between ibrutinib exposure and the development of atrial fibrillation, estimated incidence of 11% with long-term follow up. This is a common cause of ibrutinib discontinuation. Risk factors for atrial fibrillation include advanced age, hypertension (HTN), mitral valve disease (MVD), left atrial remodeling, coronary artery disease (CAD) and risk factors for cardiovascular dysfunction We conducted a retrospective case control study using the presence of left atrial abnormality identified on pre-ibrutinib EKGs, defined as either (1) Lead II-bifed p wave, with 40 mcsec between peaks for ≥ 2...
December 27, 2017: Cancer Biology & Therapy
https://www.readbyqxmd.com/read/29278840/temporal-and-geospatial-trends-of-pediatric-cancer-incidence-in-nebraska-over-a-24-year-period
#11
P A Farazi, S Watanabe-Galloway, L Westman, B Rettig, P Hunt, R Cammack, J W Sparks, D W Coulter
BACKGROUND: Data from the Surveillance, Epidemiology, and End Results (SEER) revealed that the incidence of pediatric cancer in Nebraska exceeded the national average during 2009-2013. Further investigation could help understand these patterns. METHODS: This retrospective cohort study investigated pediatric cancer (0-19 years old) age adjusted incidence rates (AAR) in Nebraska using the Nebraska Cancer Registry. SEER AARs were also calculated as a proxy for pediatric cancer incidence in the United States (1990-2013) and compared to the Nebraska data...
December 23, 2017: Cancer Epidemiology
https://www.readbyqxmd.com/read/29276498/role-of-hyperintense-acute-reperfusion-marker-for-classifying-the-stroke-etiology
#12
Hee Young Choi, Kyung Mi Lee, Hyug-Gi Kim, Eui Jong Kim, Woo Suk Choi, Bum Joon Kim, Sung Hyuk Heo, Dae-Il Chang
Purpose: The hyperintense acute reperfusion marker (HARM) is a delayed enhancement of the subarachnoid or subpial space observed on post-contrast fluid-attenuated inversion recovery (FLAIR) images and is associated with permeability changes to the blood-brain barrier in acute stroke. We investigated the relationship between HARM and stroke etiology based on the Trial of ORG 10172 in Acute Stroke Treatment (TOAST) classification. In addition, we evaluated the relationship between HARM and stroke locations with respect to vascular territories and anatomic compartments...
2017: Frontiers in Neurology
https://www.readbyqxmd.com/read/29260531/-assessment-of-left-atrial-appendage-size-and-morphology-by-enhanced-cardiac-computed-tomography-in-patients-with-non-valvular-atrial-fibrillation
#13
Zhong-Xiu Chen, Wen-Juan Bai, Hong Tang, Wei Cheng, Li Rao
OBJECTIVE: This study was designed to investigate left atrial appendage (LAA) size and morphology characteristics in patients with non-valvular atrial fibrillation (NVAF) by enhanced cardiac computed tomography (CT) scanning,and to evaluate the predictive value of these parameters for thromboembolic risk. METHODS: A total of 189 NVAF patients were prospectively enrolled during December 2012 to January 2014 in West China Hospital of Sichuan University. Fifty-two atrial tachycardia patients without organ dysfunction were also recruited as controls...
November 2017: Sichuan da Xue Xue Bao. Yi Xue Ban, Journal of Sichuan University. Medical Science Edition
https://www.readbyqxmd.com/read/29250273/left-atrial-appendage-characteristics-in-patients-with-persistent-atrial-fibrillation-undergoing-catheter-ablation-laapaf-study
#14
Enes E Gul, Usama Boles, Sohaib Haseeb, Justin Flood, Ayuish Bansal, Benedict Glover, Damian Redfearn, Chris Simpson, Hoshiar Abdollah, Adrian Baranchuk, Kevin A Michael
Background: Despite technological and scientific efforts, the recurrence rate of persistent atrial fibrillation (AF) remains high. Several studies have shown that in addition to pulmonary vein (PV) isolation other non-PV triggers, particularly left atrial appendage may be the source of initiation and maintenance of AF. There are few studies showing the role of left atrial appendage (LAA) isolation in order to obtain higher success rate in persistent AF patients. Objective: We analyzed the LAA volume, volume index and shape relative to the LA in patients with persistent AF undergoing AF ablation...
February 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29250246/leaks-after-left-atrial-appendage-ligation-with-lariat-device-incidence-pathophysiology-clinical-implications-and-methods-of-closure-a-case-based-discussion
#15
Bharath Yarlagadda, Valay Parikh, Tawseef Dar, Dhanunjaya Lakkireddy
Catheter based left atrial appendage (LAA) closure techniques are emerging as a promising alternative for stroke prevention in patients who cannot tolerate oral anticoagulation. Lariat procedure involves percutaneous catheter based epicardial ligation of the LAA with a suture via an endo-epicardial hybrid approach. It offers the advantage of not leaving behind a focus for thrombus formation or embolization. Similar to surgical ligation of the left atrial appendage, Lariat ligation is limited by leaks in a small percentage of patients...
October 2017: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/29244764/the-seagrass-holobiont-and-its-microbiome
#16
REVIEW
Kelly Ugarelli, Seemanti Chakrabarti, Peeter Laas, Ulrich Stingl
Seagrass meadows are ecologically and economically important components of many coastal areas worldwide. Ecosystem services provided by seagrasses include reducing the number of microbial pathogens in the water, providing food, shelter and nurseries for many species, and decreasing the impact of waves on the shorelines. A global assessment reported that 29% of the known areal extent of seagrasses has disappeared since seagrass areas were initially recorded in 1879. Several factors such as direct and indirect human activity contribute to the demise of seagrasses...
December 15, 2017: Microorganisms
https://www.readbyqxmd.com/read/29236953/applications-of-cardiac-computed-tomography-in-electrophysiology-intervention
#17
S Liddy, U Buckley, H K Kok, B Loo, B Glover, G R Dhillon, O Buckley
Cardiac electrophysiology is an evolving specialty that has seen rapid advances in recent years. Concurrently, there has been much progress in the field of cardiac imaging. Electrophysiologists are increasingly requesting cross-sectional imaging in advance of many procedures. Pulmonary vein isolation and left atrial appendage (LAA) occlusion are now an established treatment options for atrial fibrillation. In patients undergoing pulmonary vein isolation, applications of computed tomography (CT) include evaluating the left atrial and pulmonary venous anatomy, excluding LAA thrombus and assessing for pulmonary vein stenosis...
December 9, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/29233088/left-atrial-enlargement-and-clinical-considerations-in-patients-with-or-without-a-residual-interatrial-shunt-after-closure-of-the-left-atrial-appendage-with-the-watchman%C3%A2-device
#18
Blerim Luani, Thomas Groscheck, Conrad Genz, Ivan Tanev, Thomas Rauwolf, Joerg Herold, Senad Medunjanin, Alexander Schmeisser, Rüdiger C Braun-Dullaeus
BACKGROUND: Interventional closure of the left atrial appendage (LAA) in patients with non-valvular atrial fibrillation, high thromboembolic and bleeding risk or bleeding history is an alternative therapeutic strategy to oral anticoagulation. It is not known if the exclusion of the LAA from the blood circulation affects the left atrial volume (LAV) and consequently its prognostic value or the circulatory performance of the heart in humans. METHODS: We aimed to prospectively assess potential changes in baseline LAV, left ventricular ejection fraction (LVEF), NT-proBNP-level and the covered distance in the 6-min walk-test 6 weeks and 6 months after LAA closure with the WATCHMAN™ device...
December 12, 2017: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/29232701/differential-impact-of-white-matter-hyperintensities-on-long-term-outcomes-in-ischemic-stroke-patients-with-large-artery-atherosclerosis
#19
Minyoul Baik, Kyoungsub Kim, Joonsang Yoo, Hyeon Chang Kim, Seong Ho Jeong, Ki Hoon Kim, Hyung Jong Park, Young Dae Kim, Ji Hoe Heo, Hyo Suk Nam
BACKGROUND: The presence of white matter hyperintensity (WMH) is related to poor long-term outcomes in stroke patients. However, the long-term outcome is unknown in patients with both large artery atherosclerosis (LAA) and WMH. METHODS: We investigated the impact of WMH on long-term outcome in patients with LAA. Consecutive patients in a prospective stroke registry were included. Patients were followed for a median of 7.7 years (interquartile range, 5.6-9.7). The degree of WMH was assessed by Fazekas grade on fluid-attenuated inversion recovery images...
2017: PloS One
https://www.readbyqxmd.com/read/29223726/computed-tomography-measurement-of-the-left-atrial-appendage-for-optimal-sizing-of-the-watchman-device
#20
Bo Xu, Jorge Betancor, Kimi Sato, Serge Harb, Karim Abdur Rehman, Kunal Patel, Arnav Kumar, Paul C Cremer, Wael Jaber, L Leonardo Rodriguez, Paul Schoenhagen, Oussama Wazni
INTRODUCTION: Percutaneous left atrial appendage (LAA) occlusion is an emerging treatment option for patients with non-valvular atrial fibrillation who cannot tolerate oral anticoagulation. The Watchman device (Boston Scientific Corporation, Natick, MA, USA) is deployed at the ostium of the LAA, and an appropriately sized device is critical for successful occlusion. However, standardized imaging protocols for device sizing have not been established. OBJECTIVES: We investigated the clinical utility of a standardized imaging protocol, with pre-procedural multi-detector cardiac computed tomography (MDCT), and intra-procedural transesophageal echocardiography (TEE), for Watchman device sizing...
December 5, 2017: Journal of Cardiovascular Computed Tomography
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