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Left atrial enlargement

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https://www.readbyqxmd.com/read/27911009/echocardiographic-predictors-of-outcome-in-patients-with-chronic-obstructive-pulmonary-disease
#1
Ivan Stankovic, Robert Marcun, Aleksandra Janicijevic, Jerneja Farkas, Sasa Kadivec, Ivan Ilic, Aleksandar N Neskovic, Mitja Lainscak
BACKGROUND: We aimed to assess the relationship between echocardiographic characteristics and mortality in patients with chronic obstructive pulmonary disease (COPD). METHODS: We prospectively studied 154 patients (mean age 71 ± 10 years, 71% male) with COPD. All patients underwent transthoracic Doppler echocardiography within 48 hours of hospital admission. Primary endpoint was all-cause mortality during a median period of 22 months. RESULTS: Mildly elevated tricuspid regurgitation pressure and mitral E/e' ratio were the most commonly encountered echocardiographic abnormalities, observed in 60% and 56% of patients, respectively...
December 2, 2016: Journal of Clinical Ultrasound: JCU
https://www.readbyqxmd.com/read/27907007/exploring-regulatory-mechanisms-of-atrial-myocyte-hypertrophy-of-mitral-regurgitation-through-gene-expression-profiling-analysis-role-of-nfat-in-cardiac-hypertrophy
#2
Tzu-Hao Chang, Mien-Cheng Chen, Jen-Ping Chang, Hsien-Da Huang, Wan-Chun Ho, Yu-Sheng Lin, Kuo-Li Pan, Yao-Kuang Huang, Wen-Hao Liu, Chia-Chen Wu
BACKGROUND: Left atrial enlargement in mitral regurgitation (MR) predicts a poor prognosis. The regulatory mechanisms of atrial myocyte hypertrophy of MR patients remain unknown. METHODS AND RESULTS: This study comprised 14 patients with MR, 7 patients with aortic valve disease (AVD), and 6 purchased samples from normal subjects (NC). We used microarrays, enrichment analysis and quantitative RT-PCR to study the gene expression profiles in the left atria. Microarray results showed that 112 genes were differentially up-regulated and 132 genes were differentially down-regulated in the left atria between MR patients and NC...
2016: PloS One
https://www.readbyqxmd.com/read/27899861/echocardiographic-follow-up-of-patent-foramen-ovale-and-the-factors-affecting-spontaneous-closure
#3
Ali Yildirim, Alperen Aydin, Tevfik Demir, Fatma Aydin, Birsen Ucar, Zubeyir Kilic
BACKGROUND: The aim of the present study was to evaluate the echocardiographic follow-up of patent foramen ovale, which is considered a potential etiological factor in various diseases, and to determine the factors affecting spontaneous closure. METHODS: Between January 2000 and June 2012, records of 918 patients with patent foramen ovale were retrospectively reviewed. Patency of less than 3 mm around the fossa ovalis is called patent foramen ovale. Patients with cyanotic congenital heart diseases, severe heart valve disorders and severe hemodynamic left to right shunts were excluded from the study...
November 2016: Acta Cardiologica Sinica
https://www.readbyqxmd.com/read/27888051/absence-of-oral-anticoagulation-and-subsequent-outcomes-among-outpatients-with-atrial-fibrillation
#4
Paul L Hess, Sunghee Kim, Gregg C Fonarow, Laine Thomas, Daniel E Singer, James V Freeman, Bernard J Gersh, Jack Ansell, Peter R Kowey, Kenneth W Mahaffey, Paul S Chan, Benjamin A Steinberg, Eric D Peterson, Jonathan P Piccini
BACKGROUND: Prior studies have shown a treatment gap in oral anticoagulation (OAC) use among patients with atrial fibrillation yet have incompletely characterized factors associated with failure to treat and subsequent outcomes in contemporary practice. METHODS: Using data collected between June 2010 and August 2011 from 174 ambulatory care sites in the Outcomes Registry for Better Informed Treatment of Atrial Fibrillation, we identified factors associated with absence of OAC via stratified logistic regression...
November 22, 2016: American Journal of Medicine
https://www.readbyqxmd.com/read/27870913/genomic-contributors-to-rhythm-outcome-of-atrial-fibrillation-catheter-ablation-pathway-enrichment-analysis-of-gwas-data
#5
Daniela Husser, Petra Büttner, Laura Ueberham, Borislav Dinov, Philipp Sommer, Arash Arya, Gerhard Hindricks, Andreas Bollmann
BACKGROUND: Left atrial enlargement and persistent atrial fibrillation (AF) are well-known predictors for arrhythmia recurrence after AF catheter ablation (LRAF). In this study, by using pathway enrichment analysis of GWAS data, we tested the hypothesis that genetic pathways associated with these phenotypes are also associated with LRAF. METHODS: Samples from 660 patients with paroxysmal (n = 370) or persistent AF (n = 290) undergoing de-novo AF catheter ablation were genotyped for ~1,000,000 SNPs...
2016: PloS One
https://www.readbyqxmd.com/read/27847200/reduction-of-atrial-fibrillation-by-tanshinone-iia-in-chronic-heart-failure
#6
Zhifeng He, Changzheng Sun, Yi Xu, Dezhi Cheng
The aim of the present study was to confirm the effect of Tanshinone IIA (TAN) on the prevention of AF in chronic heart failure (CHF), and to elucidate the underlying electrophysiological mechanisms for the antiarrhythmic effects of TAN at the level of the atrium in an experimental model of CHF. In 10 female rabbits, CHF was induced by rapid ventricular pacing, leading to a significant decrease in ejection fraction in the presence of a dilated left ventricle and atrial enlargement. Twelve rabbits were sham-operated and served as controls...
November 12, 2016: Biomedicine & Pharmacotherapy, Biomédecine & Pharmacothérapie
https://www.readbyqxmd.com/read/27834762/anatomic-correlation-of-posterior-aortic-root-enlarging-incisions
#7
Habib Subhani, Abdullrazak Hossien, Vi Tran, Andrew Cook, Qamar Abid, Rasheed Saad
OBJECTIVES: To clarify the terms surrounding the posterior aortic root enlarging incisions and correlate them anatomically. METHODS: This is a human cadaveric heart study in which measurements were taken along the path of the named incisions in 42 normal and congenitally malformed hearts using calipers. RESULTS: Our results indicate that there is a variable overlap of the left atrial wall with the anterior mitral leaflet and the aorta and that in individual cases it may not be possible to accurately predict the possibility of enlarging the root without opening the left atrium, though some papers suggest otherwise...
November 2016: World Journal for Pediatric & Congenital Heart Surgery
https://www.readbyqxmd.com/read/27830886/anomalous-left-brachiocephalic-vein-important-vascular-anomaly-concomitant-with-congenital-anomalies-and-heart-diseases
#8
Shahram Kahkouee, Makan Sadr, Elham Pedarzadeh, Sara Fardin, Ali Borhani, Saeid Gholami, Ghazaleh Amjad
BACKGROUND: Anomalous left brachiocephalic vein (ALBCV) is a rare and less known systemic venous anomaly. Infrequently, this vein takes an abnormal course and passes to the right behind or beneath the aortic arch to create the superior vena cava (SVC). Its incidence was reported much higher in patients with congenital heart disease (CHD) especially in conotruncal and aortic arch anomalies. It could be misdiagnosed with normal or abnormal mediastinal structures. It also could make complication during surgeries or invasive strategies...
November 10, 2016: Folia Morphologica (Warsz)
https://www.readbyqxmd.com/read/27825670/left-atrial-volume-and-function-in-dogs-with-naturally-occurring-myxomatous-mitral-valve-disease
#9
M Höllmer, J L Willesen, A Tolver, J Koch
OBJECTIVE: Myxomatous mitral valve disease (MMVD) induces progressive left atrial (LA) enlargement. The LA modulates left ventricular filling and performance through its reservoir, conduit, and contractile function. Assessment of LA size and function may provide valuable information on the level of cardiac compensation. Left atrial function in dogs with naturally occurring MMVD remains largely unexplored. The objective of this study was to evaluate LA volume and function in dogs with naturally occurring MMVD...
November 5, 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/27824871/aortic-and-cardiac-structure-and-function-using-high-resolution-echocardiography-and-optical-coherence-tomography-in-a-mouse-model-of-marfan-syndrome
#10
Ling Lee, Jason Z Cui, Michelle Cua, Mitra Esfandiarei, Xiaoye Sheng, Winsey Audrey Chui, Michael Haoying Xu, Marinko V Sarunic, Mirza Faisal Beg, Cornelius van Breemen, George G S Sandor, Glen F Tibbits
Marfan syndrome (MFS) is an autosomal-dominant disorder of connective tissue caused by mutations in the fibrillin-1 (FBN1) gene. Mortality is often due to aortic dissection and rupture. We investigated the structural and functional properties of the heart and aorta in a [Fbn1C1039G/+] MFS mouse using high-resolution ultrasound (echo) and optical coherence tomography (OCT). Echo was performed on 6- and 12-month old wild type (WT) and MFS mice (n = 8). In vivo pulse wave velocity (PWV), aortic root diameter, ejection fraction, stroke volume, left ventricular (LV) wall thickness, LV mass and mitral valve early and atrial velocities (E/A) ratio were measured by high resolution echocardiography...
2016: PloS One
https://www.readbyqxmd.com/read/27822477/left-atrial-enlargement-on-transthoracic-echocardiography-predicts-left-atrial-thrombus-on-transesophageal-echocardiography-in-ischemic-stroke-patients
#11
James Anaissie, Dominique Monlezun, A Seelochan, James E Siegler, Maria Chavez-Keatts, Jonathan Tiu, Denise Pineda, Alexander George, Amir Shaban, Nidal Abi Rafeh, Laurie Schluter, Sheryl Martin-Schild, Ramy El Khoury
Background. Transesophageal echocardiogram (TEE) is superior to transthoracic echocardiogram (TTE) in detecting left atrial thrombus (LAT), a risk factor for stroke, but is costly and invasive, carrying a higher risk for complications. Aims. To determine the utility of using left atrial enlargement (LAE) on TTE to predict LAT on TEE. Methods. AIS patients who presented in 06/2008-7/2013 and underwent both TTE and TEE were identified from our prospective stroke registry. Analysis consisted of multivariate logistic regression with propensity score adjustment and receiver operating characteristic (ROC) area under the curve (AUC) analyses...
2016: BioMed Research International
https://www.readbyqxmd.com/read/27813300/echocardiographic-screening-for-non-ischaemic-stage-b-heart-failure-in-the-community
#12
Hong Yang, Kazuaki Negishi, Ying Wang, Mark Nolan, Makoto Saito, Thomas H Marwick
AIMS: Incident heart failure (HF) continues to pose a common and serious problem. We sought to examine the value of echocardiographic predictors of new HF in a community-based elderly population at risk for HF, independent of and incremental to clinical evaluation. METHODS AND RESULTS: Asymptomatic patients ≥65 years old, with ≥1 HF risk factor (hypertension, type 2 diabetes, or obesity) were recruited from the community; patients with valve disease, reduced ejection fraction (EF), and atrial fibrillation (AF) were excluded...
November 2016: European Journal of Heart Failure
https://www.readbyqxmd.com/read/27812768/impact-of-anteroinferior-transseptal-puncture-on-creation-of-a-complete-block-at-the-mitral-isthmus-in-patients-with-atrial-fibrillation
#13
Kenji Okubo, Taishi Kuwahara, Masateru Takigawa, Yasuaki Tanaka, Jun Nakajima, Yuji Watari, Emiko Nakashima, Kazuya Yamao, Yuichiro Sagawa, Katsumasa Takagi, Tadashi Fujino, Hiroyuki Tsutsui, Atsushi Takahashi
PURPOSE: Achieving complete mitral isthmus (MI) conduction block for atrial fibrillation (AF) ablation remains challenging. We hypothesized that transseptal puncture (TSP) at the anteroinferior aspect of the atrial septum (anteroinferior TSP) could shorten the distance to the MI and improve catheter contact and stability, enabling complete MI block. This study investigated the efficacy of anteroinferior TSP for MI ablation in AF patients. METHODS: Three hundred and twenty consecutive patients (mean age: 62 ± 9 years, 84 % male) with persistent AF undergoing AF ablation, including MI ablation, were enrolled...
November 3, 2016: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
https://www.readbyqxmd.com/read/27776714/assessment-for-pulmonary-artery-hypertension-using-clinical-and-echocardiographic-criteria-in-patients-with-systemic-sclerosis
#14
Nadera Methia, Samia Latreche, Omar Ait Mokhtar, Jean-Jacques Monsuez, Salim Benkhedda
BACKGROUND: Prognosis of systemic sclerosis (SSc) is affected by pulmonary artery hypertension (PAH). METHODS: Among 202 patients (mean age: 46.1 ± 13.3 years; 177 women) with SSc, those with a tricuspid regurgitation (TR) jet maximal velocity at 2D-echocardiography (2DE) < 2.8m/second were not considered at high risk for PAH, whereas those with a TR velocity >3m/second or between 2.8 and 3m/second and associated with dyspnea were. RESULTS: Among 22 patients at risk, 15 (mean age: 50...
October 2016: American Journal of the Medical Sciences
https://www.readbyqxmd.com/read/27773589/the-role-of-left-atrial-volume-index-in-patients-with-a-first-ever-acute-ischemic-stroke
#15
Murat Biteker, Kadir Kayataş, Özcan Başaran, Volkan Dogan, Eda Özlek, Bülent Özlek
BACKGROUND: Although an enlarged left atrium has recently emerged as a marker of adverse outcomes in various diseases, its discriminatory value and prognostic role in acute ischemic stroke (AIS) are not well studied. We studied whether left atrial volume index (LAVI) predicts mortality and discriminates stroke subtypes after AIS. METHODS: We prospectively followed 310 consecutive first-ever AIS patients aged 50 years or older who were admitted to the hospital within 24 hours of the onset of stroke symptoms...
October 20, 2016: Journal of Stroke and Cerebrovascular Diseases: the Official Journal of National Stroke Association
https://www.readbyqxmd.com/read/27758811/left-atrial-remodeling-and-atrioventricular-coupling-in-a-canine-model-of-early-heart-failure-with-preserved-ejection-fraction
#16
Rosita Zakeri, Gilles Moulay, Qiang Chai, Ozgur Ogut, Saad Hussain, Hiroyuki Takahama, Tong Lu, Xiao-Li Wang, Wolfgang A Linke, Hon-Chi Lee, Margaret M Redfield
BACKGROUND: Left atrial (LA) compliance and contractility influence left ventricular stroke volume. We hypothesized that diminished LA compliance and contractile function occur early during the development of heart failure with preserved ejection fraction (HFpEF) and impair overall cardiac performance. METHODS AND RESULTS: Cardiac magnetic resonance imaging, echocardiography, left ventricular and LA pressure-volume studies, and tissue analyses were performed in a model of early HFpEF (elderly dogs, renal wrap-induced hypertension, exogenous aldosterone; n=9) and young control dogs (sham surgery; n=13)...
October 2016: Circulation. Heart Failure
https://www.readbyqxmd.com/read/27733460/catheter-ablation-for-atrial-fibrillation-in-a-patient-with-unilateral-left-pulmonary-artery-agenesis-an-enlarged-right-pulmonary-vein-caused-arrhythmogenicity-of-atrial-fibrillation
#17
Naotaka Hashiguchi, Takashi Kurita, Shunichi Miyazaki
No abstract text is available yet for this article.
October 12, 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27733026/association-of-left-atrial-enlargement-with-cortical-infarction-in-subjects-with-patent-foramen-ovale
#18
Mi Ji Lee, Sung-Ji Park, Chang Hyo Yoon, Ji-Won Hwang, Sookyung Ryoo, Suk Jae Kim, Gyeong-Moon Kim, Chin-Sang Chung, Kwang Ho Lee, Oh Young Bang
BACKGROUND AND PURPOSE: Left atrial dysfunction has been reported in patients with patent foramen ovale (PFO). Here we investigated the role of left atrial dysfunction in the development of embolic stroke in patients with PFO. METHODS: We identified consecutive patients with embolic stroke of undetermined sources except for PFO (PFO+ESUS). Healthy subjects with PFO served as controls (PFO+control). A stratified analysis by 10-year age group and an age- and sex- matching analysis were performed to compare echocardiographic markers between groups...
September 2016: Journal of Stroke
https://www.readbyqxmd.com/read/27728041/to-detect-left-atrial-enlargment-in-patient-with-mitral-stenosis-with-electrocardiography-and-its-corelation-with-transthoracic-2d-echocardiography
#19
S B Lunge, A Modak, S K Jadhav
No abstract text is available yet for this article.
January 2016: Journal of the Association of Physicians of India
https://www.readbyqxmd.com/read/27701468/determinants-of-left-atrial-volume-in-patients-with-atrial-fibrillation
#20
Matthias Bossard, Rahel Kreuzmann, Thomas Hochgruber, Philipp Krisai, Andreas J Zimmermann, Stefanie Aeschbacher, Katrin Pumpol, Arnheid Kessel-Schaefer, Frank-Peter Stephan, Nadja Handschin, Christian Sticherling, Stefan Osswald, Beat A Kaufmann, Guillaume Paré, Michael Kühne, David Conen
INTRODUCTION: Left atrial (LA) enlargement is an important risk factor for incident stroke and a key determinant for the success of rhythm control strategies in patients with atrial fibrillation (AF). However, factors associated with LA volume in AF patients remain poorly understood. METHODS: Patients with paroxysmal or persistent AF were enrolled in this study. Real time 3-D echocardiography was performed in all participants and analyzed offline in a standardized manner...
2016: PloS One
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