Read by QxMD icon Read


Monish S Raut, Sumir Dubey, Arun Maheshwari, Manish Sharma
Inverted left atrial tissue is mostly identified when the heart is empty while coming off bypass. During echocardiography a new, echodense mobile mass in the left atrium without attachment is visualized. Such a picture can easily produce not only confusion in the diagnosis but also mitral valve obstruction, hemodynamic instability, and a possibility of appendage necrosis. Inability to identify such inverted tissue can lead to unwanted interventions with additional cardiopulmonary bypass time.
September 2016: Indian Heart Journal
Jagdish C Mohan, Madhu Shukla, Vishwas Mohan, Arvind Sethi
Left atrial dissection is a very uncommon complication of cardiac surgery and usually causes significant hemodynamic compromise. Little is known about spontaneous dissection of the left atrium. Two patients, one middle-aged man and another elderly woman were evaluated following stroke. Routine trans-thoracic echocardiogram showed vertical division of the left atrium with both chambers communicating with each other through an orifice. Detailed trans-oesophageal echocardiographic study revealed dissection of the left atrium producing an additional false chamber (pseudo-aneurysm) placed posterior to the left atrial appendage and above the postero-lateral aspect of mitral annulus...
September 2016: Indian Heart Journal
Yu-Yang Chen, Qi Liu, Li Liu, Xiao-Rong Shu, Zi-Zhuo Su, Hai-Feng Zhang, Ru-Qiong Nie, Jing-Feng Wang, Shuang-Lun Xie
BACKGROUND: Metabolic syndrome (MS) is a risk factor for stroke and thromboembolism event. Left atrial or LA appendage (LA/LAA) thrombus is a surrogate of potential stroke. The relationship between MS and atrial thrombus remains unclear. In this study, we sought to investigate the effect of MS on risk stratification of LA/LAA thrombus formation in patients with nonvalvular atrial fibrillation (NVAF). METHODS: This cross-sectional study enrolled 294 consecutive NVAF patients without prior anticoagulant and lipid-lowering therapies...
2016: Chinese Medical Journal
Lim Eng, Jacqueline Saw
No abstract text is available yet for this article.
September 2016: Journal of Thoracic Disease
Xavier Freixa, Laura Llull, Sameer Gafoor, Ignacio Cruz-Gonzalez, Samera Shakir, Heyder Omran, Sergio Berti, Gennaro Santoro, Joelle Kefer, Ulf Landmesser, Jens Erik Nielsen-Kudsk, Prapa Kanagaratnam, Fabian Nietlispach, Steffen Gloekler, Adel Aminian, Paolo Danna, Marco Rezzaghi, Friederike Stock, Miroslava Stolcova, Luis Paiva, Marco Costa, Xavier Millán, Reda Ibrahim, Tobias Tichelbäcker, Wolfgang Schillinger, Jai-Wun Park, Horst Sievert, Bernhard Meier, Apostolos Tzikas
Cardioembolic strokes are generally more lethal and disabling than other source of strokes. Data from PROTECT AF (Watchman Left Atrial Appendage Closure Technology for Embolic Protection in Patients With Atrial Fibrillation) suggest that strokes after left atrial appendage occlusion (LAAO) with the Watchman device are less disabling than those in the warfarin group. No data assessing the severity of strokes after LAAO with the AMPLATZER Cardiac Plug (ACP) are available. The objective of the study was to evaluate the severity of cerebrovascular events after LAAO with the ACP in a population mostly characterized by an absolute or relative contraindication to oral anticoagulation...
September 15, 2016: American Journal of Cardiology
Sotirios Nedios, Emmanuel Koutalas, Philipp Sommer, Arash Arya, Sascha Rolf, Daniela Husser, Andreas Bollmann, Gerhard Hindricks, Ole-Alexander Breithardt
AIMS: The association between anatomical left atrial (LA) remodelling and ventricular diastolic dysfunction (DD) in atrial fibrillation (AF) patients is not well studied. We aimed to examine the effect of DD on anatomic LA remodelling and their relation with ablation outcomes. METHODS AND RESULTS: In 104 patients (58 ± 10 years, 69% male) referred for AF ablation, LA volume (LAV) was determined by computed tomography. A cutting plane, between the pulmonary vein (PV) ostia and the appendage and parallel to the posterior wall, divided LAV into anterior- (LA-A) and posterior-LA parts...
October 12, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Lin Wang, Madhavi Kadiyala, Elana Koss, Abhimanyu Yarramaneni, Kathleen Rapelje, Stephanie Kampfer, Nathaniel Reichek, David Hoch, Vinay Jayam, Joseph Levine, Jie J Cao
BACKGROUND: We investigated CT angiography (CTA) in assessment of left atrial appendage (LAA) stasis and thrombus in pre-procedural evaluation for atrial fibrillation (AF) ablation in a large community cohort. METHODS AND RESULTS: We reviewed CTA and transesophageal echocardiographic images obtained in 861 consecutive patients with a history of AF undergoing same-day CTA and transesophageal echocardiogram (TEE) before AF ablation at a single hospital (2006-2013)...
October 12, 2016: Pacing and Clinical Electrophysiology: PACE
Zhonghua Sun, Yanmin Zhou, Ding Zhou, Yat-Yin Lam, Yunzhou Huang, Jian Zhang, Yuanlu Chen, Xiangqian Qi
No abstract text is available yet for this article.
October 1, 2016: International Journal of Cardiology
Ignacio Cruz-González, Juan C Rama-Merchan, Sandra Martínez-Peralta, Luis López-Mesonero, Javier Rodríguez-Collado, Pedro L Sánchez
No abstract text is available yet for this article.
October 5, 2016: Revista Española de Cardiología
Andrea Radinovic, Patrizio Mazzone, Giovanni Landoni, Eustachio Agricola, Damiano Regazzoli, Paolo Della Bella
BACKGROUND: Left atrial catheterization through transseptal puncture is frequently performed in cardiac catheterization procedures. Appropriate transseptal puncture is critical to achieve procedural success. AIMS: The aim of the study is to evaluate the feasibility of selective transseptal punctures, using a modified radiofrequency (RF) transseptal needle and transesophageal echocardiography (TEE), in different types of procedures that require specific sites of left atrial catheterization...
October 2016: Annals of Cardiac Anaesthesia
Martin Fiala, Veronika Bulková, Libor Škňouřil, Renáta Nevřalová, Ondřej Toman, Jaroslav Januška, Jindřich Špinar, Dan Wichterle
AIMS: Identifying patients who benefit from restored sinus rhythm (SR) would optimize the selection of candidates for ablation of long-standing persistent atrial fibrillation (LSPAF). This prospective study sought to identify the hitherto unknown factors associated with global functional improvement after successful radiofrequency catheter ablation of LSPAF. METHODS AND RESULTS: In 171 LSPAF patients (84% of the total consecutive 203 patients) who were examined in SR 12 months after ablation, the individual per cent change from baseline value in maximum oxygen consumption at exercise test (VO2 max), left ventricular ejection fraction (LVEF), N-terminal prohormone of brain natriuretic peptide (NT-proBNP), and five-dimensional descriptive system (EQ-5D) of quality-of-life questionnaire were classified in quartiles by 0 (worse) to 3 (best) grades...
October 5, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
Navkaranbir S Bajaj, Rajat Kalra, Nirav Patel, Taimoor Hashim, Hemant Godara, Sameer Ather, Garima Arora, Tilak Pasala, Thomas T Whitfield, David C McGiffin, Mustafa I Ahmed, Steven G Lloyd, Nita A Limdi, Pankaj Arora
BACKGROUND: Multiple novel oral anticoagulants and left atrial appendage closure devices (WATCHMAN) have been tested against dose-adjusted vitamin K antagonists in randomized controlled trials for stroke prophylaxis in non-valvular atrial fibrillation. No direct comparisons of these strategies are available from randomized controlled trials. We conducted the current analyses by combining efficacy and safety characteristics of all FDA approved stroke prophylaxis treatment strategies for patients with non-valvular atrial fibrillation...
2016: PloS One
Erin A Fender, Jawad G Kiani, David R Holmes
PURPOSE OF REVIEW: Anticoagulant therapy effectively reduces the incidence of stroke in patients with atrial fibrillation (AF) but is underutilized and frequently contraindicated. The left atrial appendage (LAA) is the primary site of thrombus formation in AF patients. Surgical and percutaneous appendage closure has been evaluated as a site-specific therapy to reduce systemic thromboembolism. RECENT FINDINGS: We will review LAA closure techniques, examine recent outcome data, and discuss the indications for, and potential complications of, each approach...
November 2016: Current Atherosclerosis Reports
Daniele Gemma, Raúl Moreno Gómez, Jaime Fernández de Bobadilla, Guillermo Galeote García, Teresa López Fernandez, Jose R López-Mínguez, José L López-Sendón
Mitral stenosis (MS) is frequently associated with the development of atrial fibrillation (AF) as a consequence of hemodynamic and inflammatory changes in the left atrium. Both conditions predispose to thrombus formation, with frequent involvement of the left atrial appendage (LAA), and consequent increase in the incidence of systemic thromboembolic events. Percutaneous mitral valvuloplasty (PMV) reduces the risk of thromboembolism in patients with significant mitral stenosis. Percutaneous LAA closure is also associated with a reduction in thromboembolic risk in patients with AF, but there are no data regarding the use of this technique in patients with significant mitral valve disease...
September 29, 2016: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
Yae Matsuo, Petr Neuzil, Jan Petru, Milan Chovanec, Marek Janotka, Subbarao Choudry, Jan Skoda, Lucie Sediva, Masahiko Kurabayashi, Vivek Y Reddy
BACKGROUND: Transcatheter left atrial appendage closure is an alternative therapy for stroke prevention in atrial fibrillation patients. These procedures are currently guided with transesophageal echocardiography and fluoroscopy in most centers. As intracardiac echocardiography (ICE) is commonly used in other catheter-based procedures, we sought to determine the safety and effectiveness of intracardiac echocardiography-guided left atrial appendage closure with the Watchman device. METHODS AND RESULTS: A total of 27 patients (11 males, 77...
2016: Journal of the American Heart Association
Adam W Powell, Michael D Taylor, Carol M Cottrill, John L Jefferies
No abstract text is available yet for this article.
September 27, 2016: European Heart Journal Cardiovascular Imaging
Peter Fahmy, Lim Eng, Jacqueline Saw
Percutaneous left atrial appendage (LAA) closure is gaining interest as an alternative option for prevention of strokes in patients with Atrial Fibrillation (AF), especially for those with contraindications to anticoagulation. Complications from these procedures are well described in the medical literature. LAA closures may lead to pericardial effusion, device-associated thrombus, and device embolization. Understanding the reasons for embolization, strategies to avoid embolization, and the techniques for retrieval of LAA devices (ACP/AMULET and WATCHMAN) should be appreciated by endovascular implanters...
September 28, 2016: Catheterization and Cardiovascular Interventions
Rishi Arora, Gary L Aistrup, Stephen Supple, Caleb Frank, Jasleen Singh, Shannon Tai, Anne Zhao, Laura Chicos, William Marszalec, Ang Guo, Long-Sheng Song, J Andrew Wasserstrom
BACKGROUND: The peculiarities of T-tubule morphology and distribution in the atrium - and how they contribute to excitation-contraction coupling - are just beginning to be understood. OBJECTIVE: To determine T-tubule density in the intact, live right and left atria in a large animal and to determine intra-regional differences in T-tubule organization within each atrium. METHODS: Using confocal microscopy, T-tubules were imaged in both atria in intact, Langendorf-perfused normal dog hearts loaded with di-4-ANEPPS...
September 23, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
Hai Liu, Guangxian Chen, Hongsheng Zheng, Han Qin, Mengya Liang, Kangni Feng, Zhongkai Wu
The majority of proteomic studies have focused on identifying atrial fibrillation (AF)-associated proteins in the right atrium (RA), thus potential differences in AF‑associated proteins between the RA and left atrium (LA) remain unknown. The aim of the present study was to perform proteomic analysis to compare the potential differences in AF‑associated proteins between the right atrial appendage (RAA) and left atrial appendage (LAA) in patients with rheumatic mitral valve disease (RMVD). RAA and LAA tissues were obtained from 18 patients with RMVD (10 with AF) during mitral valve replacement surgery...
September 26, 2016: Molecular Medicine Reports
Muhittin Demirel, Cüneyt Toprak, Emrah Acar, Servet İzci, Lütfi Öcal
No abstract text is available yet for this article.
September 2016: Türk Kardiyoloji Derneği Arşivi: Türk Kardiyoloji Derneğinin Yayın Organıdır
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"