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Po-01-087 a rare case of bi-atrial fdg-uptake: presenting as new onset atrial fibrillation
Isolated atrial myocarditis is rare, with presenting symptoms that are non-specific. Prior reports have suggested association with atrial arrythmias and increased risk of stroke due to atrial dysfunction. Fluorodeoxyglucose (FDG)-positron emission tomography (PET) CT scan is considered as a goal standard test for the diagnosis of myocarditis.
Source: Heart Rhythm - May 1, 2023 Category: Cardiology Authors: Adnan Ahmed, Danish Bawa, William C. Kellogg, Vasvi Singh, Rajesh Kabra, Naga Venkata K. Pothineni, Douglas Darden, Rakesh Gopinathannair, Dhanunjaya R. Lakkireddy Source Type: research

Po-644-03 impact of pre-procedural planning with a novel cardiac ct software platform on the efficiency of a left atrial appendage closure procedure
Percutaneous left atrial appendage closure (LAAC) is an accepted option for stroke prevention in high-risk patients with atrial fibrillation (AF) unable to take long-term oral anticoagulation. Cardiac CT scans are increasingly being used for pre-procedural planning of structural heart procedures. However, the impact of pre-procedural planning on LAAC procedures is unknown.
Source: Heart Rhythm - April 29, 2022 Category: Cardiology Authors: Jeromane Tenido-Ng, Stephanie Durkin, Advay G. Bhatt, Elliot Brown, Howard Goldschmidt, Himanshu Gupta, Dan L. Musat, Suneet Mittal Source Type: research

Multidetector computed tomography may be an adequate screening test to reduce periprocedural stroke in atrial fibrillation ablation: A multicenter propensity-matched analysis
Source: Heart Rhythm - January 27, 2014 Category: Cardiology Authors: Sung-Jin Hong, Jong-Yun Kim, Jin-Bae Kim, Jung-Hoon Sung, Dong Wook Kim, Jae-Sun Uhm, Hye-Jeong Lee, Young Jin Kim, Hui-Nam Pak, Moon-Hyoung Lee, Boyoung Joung Source Type: research

Relationship between left atrial appendage morphology and stroke in patients with atrial fibrillation
Background: Atrial fibrillation (AF) is an important cause of stroke. Given the morbidity and mortality associated with stroke, the risk stratification of patients based on left atrial appendage (LAA) characteristics is of great interest.Objective: To explore the association between LAA morphology and LAA characteristics including the extent of trabeculations, orifice diameter, and length with prevalent stroke in a large cohort of patients with drug refractory AF who underwent AF ablation to develop mechanistic insight regarding the risk of stroke.Methods: An institutional cohort of 1063 patients referred for AF ablation f...
Source: Heart Rhythm - September 27, 2013 Category: Cardiology Authors: Irfan M. Khurram, Jane Dewire, Michael Mager, Farhan Maqbool, Stefan L. Zimmerman, Vadim Zipunnikov, Roy Beinart, Joseph E. Marine, David D. Spragg, Ronald D. Berger, Hiroshi Ashikaga, Saman Nazarian, Hugh Calkins Tags: Atrial Fibrillation Source Type: research

Endocardial occlusion of incompletely surgically ligated left atrial appendage using an Amplatzer septal occluder device
A 55-year-old man underwent a surgical Maze procedure for the treatment of nonvalvular atrial fibrillation with concomitant surgical suture ligation of left atrial appendage (LAA). Baseline transesophageal echocardiography (TEE) and computed tomography (CT) angiography revealed a normal LAA free of thrombus (A). Ten days after surgery, he developed an acute embolic stroke. Repeat TEE and CT angiography demonstrated an incompletely surgically ligated LAA (ISLL) without thrombus, with the ISLL neck dimensions measuring 3 × 3 mm (B). He was promptly initiated on oral anticoagulation (OAC) therapy. But owing to intolerance to...
Source: Heart Rhythm - June 24, 2013 Category: Cardiology Authors: Arash Aryana, Sean Bailey, Padraig Gearoid O’Neill, André d’Avila Tags: Image Source Type: research

Left atrial appendage and thromboembolism: Shape matters
The assessment of the left atrial appendage (LAA) morphology is a relatively new concept as the use of computed tomography (CT) and magnetic resonance imaging has become common in the preablation assessment of patients with atrial fibrillation (AF). In the not so distant past, transesophageal echocardiogram (TEE) was the primary modality used to analyze the LAA. Three-dimensional rendering of the LAA has allowed assessment and classification of different morphologies and now their correlation with thromboembolic risk. In this issue of HeartRhythm, Kimura et al make a case for a specific LAA morphology being related to a hi...
Source: Heart Rhythm - February 18, 2013 Category: Cardiology Authors: Sumit Verma Tags: Editorial Commentary Source Type: research

Anatomical characteristics of the left atrial appendage in cardiogenic stroke with low CHADS2 scores
Conclusions: The LAA anatomy might be useful for predicting strokes in patients with nonvalvular AF who have low CHADS2 scores.
Source: Heart Rhythm - February 4, 2013 Category: Cardiology Authors: Takehiro Kimura, Seiji Takatsuki, Kohei Inagawa, Yoshinori Katsumata, Takahiko Nishiyama, Nobuhiro Nishiyama, Kotaro Fukumoto, Yoshiyasu Aizawa, Yoko Tanimoto, Kojiro Tanimoto, Masahiro Jinzaki, Keiichi Fukuda Tags: Creative Concepts Source Type: research