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left atrial function

Ahmet Karakurt, Cennet Yildiz, Abdülmelik Yildiz, Yavuz Karabağ, Metin Çağdaş, İbrahim Rencüzoğulları, İnanç Artaç, Doğan İliş
OBJECTIVE: To evaluate left atrial (LA) deformation parameters strain (S)/strain rate (SR) and time to peak S/SR obtained by two-dimensional speckle tracking echocardiography (2D-STE) in patients with hypertension for three LA mechanical phases and to compare them with the same indices in the control subjects. METHODS: Fifty-five patients with hypertension (HT) and 29 healthy controls were included in the study. All patients had normal LA poster-anterior diameter, LA and left ventricular ejection fractions (LVEF >50%) in two-dimensional echocardiography (2-DE)...
June 18, 2018: Acta Cardiologica
Arash Salemi, Andrea De Micheli, Abdullah Aftab, Adham Elmously, Regis Chang, S Chiu Wong, Berhane M Worku
OBJECTIVES: Left atrial appendage thrombus (LAT) was an exclusion criterion in the seminal transcatheter aortic valve replacement (TAVR) trials; however, such patients do undergo TAVR in the 'real-world' setting. This study sought to analyse outcomes after TAVR in patients with LAT or spontaneous echo contrast (SEC). METHODS: All patients undergoing TAVR at our institution between March 2009 and December 2014 were prospectively analysed. The presence of LAT or SEC was determined via a retrospective chart review...
June 14, 2018: Interactive Cardiovascular and Thoracic Surgery
Tornike Sologashvili, Laure Wannaz, Maurice Beghetti, Yacine Aggoun, René Prêtre, Patrick O Myers
OBJECTIVES: Ventricular retraining and arterial switch have been described in late-presenting transposition of the great arteries (TGA) in older infants who were unable to undergo neonatal arterial switch operation (ASO) and late survivors of atrial switch with systemic right ventricular dysfunction. There are little data available on patients presenting between these 2 groups. This study aims to review the early and mid-term outcomes of the management of late-presenting TGA with an unprepared left ventricle (LV) by a 2-stage arterial switch...
April 17, 2018: Interactive Cardiovascular and Thoracic Surgery
Antonello D'Andrea, Olga Vriz, Francesco Ferrara, Rosangela Cocchia, Marianna Conte, Marco Di Maio, Caterina Driussi, Raffaella Scarafile, Francesca Martone, Simona Sperlongano, Giampaolo Tocci, Rodolfo Citro, Pio Caso, Eduardo Bossone, Paolo Golino
Background: Transthoracic Doppler echocardiographic examination is commonly performed to define the diastolic ventricular function since it is widely available, noninvasive, and inexpensive with respect to other diagnostic imaging modalities. However, data regarding age- and gender-matched reference values are scanty and sometimes conflicting. This study aims to explore the physiologic variations of left ventricular (LV) E/e ' ratio as assessed in a large cohort of healthy adults and to investigate clinical and echocardiographic correlates...
April 2018: Journal of Cardiovascular Echography
Melissa A Daubert, David J Whellan, Holger Woehrle, Gudaye Tasissa, Kevin J Anstrom, JoAnn Lindenfeld, Adam Benjafield, Amy Blase, Naresh Punjabi, Mona Fiuzat, Olaf Oldenburg, Christopher M O'Connor
BACKGROUND: Sleep-disordered breathing (SDB), including central and obstructive sleep apnea, is a marker of poor prognosis in heart failure (HF) and may worsen cardiac dysfunction over time. Treatment of SDB with adaptive servoventilation (ASV) may reverse pathologic cardiac remodeling in HF patients. METHODS: The Cardiovascular Improvements with Minute Ventilation-targeted Adaptive Servo-Ventilation Therapy in Heart Failure (CAT-HF) trial randomized patients with acute decompensated HF and confirmed SDB to either optimal medical therapy (OMT) or treatment with ASV and OMT...
July 2018: American Heart Journal
Steven M Markowitz, Bruce B Lerman
In delaying transmission of the cardiac impulse from the atria to the ventricles, the atrioventricular (AV) node serves a critical function in augmenting ventricular filling during diastole and limiting the ventricular response during atrial tachyarrhythmias. The complex structure of the nodal region, however, also provides the substrate for reentrant rhythms. Recent discoveries have elucidated the cellular basis and anatomical determinants of slow conduction in the node. Based on analysis of gap junction proteins, distinct structural components of the AV node have been defined, including the compact node, right and left inferior nodal extensions, the lower nodal bundle, and transitional tissue...
June 16, 2018: Journal of Interventional Cardiac Electrophysiology: An International Journal of Arrhythmias and Pacing
Cesare Cuspidi, Carla Sala, Marijana Tadic, Elisa Gherbesi, Guido Grassi, Giuseppe Mancia
AIM: The association between pre-hypertension (pre-HTN) and subclinical cardiac damage remains undefined. We performed a systematic meta-analysis of echocardiographic studies in order to provide a comprehensive information on structural and functional cardiac changes in untreated pre-HTN subjects. DESIGN: Studies were identified by crossing the following search terms: "pre-hypertension", "high normal blood pressure" "heart" "left ventricular hypertrophy", "left ventricular function", "diastolic function", "left atrial size", "aortic root size", "echocardiography...
June 8, 2018: International Journal of Cardiology
Carolyn S P Lam, Adriaan A Voors, Rudolf A de Boer, Scott D Solomon, Dirk J van Veldhuisen
This review aims to provide a translational perspective on recent developments in heart failure with preserved ejection fraction (HFpEF), linking mechanistic insights to potential therapies. A key concept in this review is that HFpEF is a haemodynamic condition wherein the heart fails to keep up with the circulatory demands of the body, or does so at the expense of raised left ventricular filling pressures. We, therefore, propose that the 'final common pathway' for development of congestion, i.e. basic haemodynamic mechanisms of increased left ventricular end-diastolic pressure, left atrial hypertension, pulmonary venous congestion, and plasma volume expansion, represents important initial targets for therapy in HFpEF...
June 13, 2018: European Heart Journal
Anupama Vasudevan, Aneley Hundae, Darara Borodge, Peter A McCullough, Peter J Wells
Radiofrequency catheter ablation of the cavotricuspid isthmus is a proven therapy for typical atrial flutter (AFl); however, in some patients, new atrial arrhythmias (AA) may occur after AFl ablation. This study explored the difference in the occurrence of spontaneous AA after AFl ablation as a function of the patient's presenting rhythm on the day of the AFl ablation. A retrospective study of consecutive patients who underwent AFl ablation at Baylor University Medical Center at Dallas was performed. A total of 188 subjects were included; 50% (94) presented in AFl (Group AFl) on the day of the ablation procedure and 94 presented in sinus rhythm (SR; Group SR)...
July 2018: Proceedings of the Baylor University Medical Center
Stephen A Gannon, Kenneth J Mukamal, James D Chang
AIMS: The aim of this study was to identify echocardiographic predictors of improved or worsening renal function during intravenous diuresis for decompensated heart failure. Secondary aim included defining the incidence and clinical risk factors for acute changes in renal function with decongestion. METHODS AND RESULTS: A retrospective review of 363 patients admitted to a single centre for decompensated heart failure who underwent intravenous diuresis and transthoracic echocardiography was conducted...
June 14, 2018: ESC Heart Failure
Ewa Pilichowska-Paszkiet, Jakub Baran, Grażyna Sygitowicz, Agnieszka Sikorska, Sebastian Stec, Piotr Kułakowski, Beata Zaborska
AIM: Left atrial (LA) fibrosis promotes atrial fibrillation (AF), may predict poor radiofrequency catheter ablation (RFCA) outcome, and may be assessed invasively using electroanatomical mapping (EAM). Speckle tracking echocardiography (STE) enables quantitative assessment of LA function. The aim was to assess the relationship between LA fibrosis derived from EAM and LA echocardiographic parameters as well as biomarkers of fibrosis in patients with AF. METHODS: Sixty-six patients (64% males, mean age 56 ± 10) with nonvalvular AF treated with first RFCA were prospectively studied...
June 13, 2018: Echocardiography
Marcell J Tjørnild, Søren N Skov, Karen B Poulsen, Mona Sharghbin, Leila L Benhassen, Lisa Carlson Hanse, Farhad Waziri, Diana M Røpcke, Sten L Nielsen, J Michael Hasenkam
OBJECTIVES: To investigate mitral valve posterior leaflet and subvalvular reconstruction using a 2-ply small intestinal submucosal extracellular matrix sheet. METHODS: Mitral valve posterior leaflet and subvalvular reconstruction was characterized in an acute 80-kg porcine model with 7 pigs acting as their own controls. The characterization was based on pressure catheter measurements of pressure differences to identify mitral regurgitation, stenosis and systolic anterior motion...
April 19, 2018: European Journal of Cardio-thoracic Surgery
Manasawee Indrabhinduwat, Maria C Arciniegas Calle, Joseph P Colgan, Benoy N Villarraga
A 37-year-old male presented with cough, dyspnea, significant weight loss (45 pounds) and subacute fever for the past two months. Physical examination revealed inspiratory and expiratory wheezing bilaterally. A normal S1, S2 and a 3/6 systolic ejection murmur at the left upper parasternal border with respiratory variation were found during cardiac auscultation. Kidney and bone marrow biopsy reported a high grade B cell lymphoma. Echocardiography and cardiac CT findings consisted of multiple intracardiac masses affecting the right ventricular (RV) outflow track, RV apex, medial portion of the right atrium and posterior left atrium, as well as mild impairment of the RV systolic function...
June 12, 2018: Echo Research and Practice
Hee Tae Yu, Pil-Sung Yang, Tae-Hoon Kim, Jae-Sun Uhm, Jong-Youn Kim, Boyoung Joung, Moon-Hyoung Lee, Hui-Nam Pak
BACKGROUND: Catheter ablation is a good treatment option for atrial fibrillation (AF) in young symptomatic patients. However, there is little information on the efficacy of catheter ablation of early-onset AF between sexes.Methods and Results:This study included 1,060 patients under the age 60 years old (837 men, 49.8±7.7 years old, 70.8% paroxysmal AF) who underwent catheter ablation for AF. Sex differences in clinical presentation and ablation outcomes were compared with and without propensity score-matching...
June 8, 2018: Circulation Journal: Official Journal of the Japanese Circulation Society
Seijirow Goya, Tomoki Wada, Kazumi Shimada, Daiki Hirao, Ryou Tanaka
OBJECTIVE: To investigate the dose-dependent effects of isoflurane and dobutamine on haemodynamics in dogs with experimentally induced mitral valve insufficiency (MI). STUDY DESIGN: Experimental, dose-response study. ANIMALS: Six healthy Beagle dogs. METHODS: Dogs with surgically induced MI were anaesthetized once. First, anaesthesia was maintained at an end-tidal isoflurane concentration (Fe'Iso) 1.0% (ISO1.0) for 20 minutes...
April 18, 2018: Veterinary Anaesthesia and Analgesia
Anub G John, Glenn A Hirsch, Marcus F Stoddard
OBJECTIVES: This study assessed if frequent premature atrial contractions (PACs) were associated with decreased left atrial (LA) strain and adverse remodeling. BACKGROUND: Left atrial dysfunction and enlargement increases risk of stroke. If frequent PACs cause LA dysfunction and remodeling, PAC suppressive therapy may be beneficial. METHODS: Inclusion criteria were age ≥18 years and sinus rhythm. Exclusion criteria were atrial fibrillation or any etiology for LA enlargement...
June 10, 2018: Echocardiography
Hubert Cochet, Lucas Morlon, Marie-Philippe Vergé, Marjorie Salel, Claudia Camaioni, Amélie Reynaud, Jérôme Peyrou, Philippe Ritter, Pierre Jais, François Laurent, Stéphane Lafitte, Michel Montaudon, Patricia Réant
BACKGROUND: Novel predictors of atrial fibrillation (AF) in hypertrophic cardiomyopathy (HCM) are desirable. AIM: To detect new multimodality imaging variables predictive of de novo AF in HCM. METHODS: Consecutive patients with HCM underwent clinical assessment and 48-hour Holter electrocardiography to detect AF episodes. Left ventricular (LV) morphology, function and fibrosis, and the left atrium (LA) were characterized by cardiac magnetic resonance...
June 5, 2018: Archives of Cardiovascular Diseases
Łukasz Mazurkiewicz, Lidia Ziółkowska, Joanna Petryka, Mateusz Śpiewak, Łukasz Małek, Agata Kubik, Magdalena Marczak, Jolanta Misko, Grażyna Brzezińska-Rajszys
OBJECTIVES: To investigate biatrial mechanics and their relation with left ventricular outflow tract (LVOT) obstruction (LVOTO), the degree of hypertrophy, indices of ventricular diastolic function and fibrosis in children with hypertrophic cardiomyopathy (HCM). METHODS: Fifty-five consecutive, prospectively recruited children with HCM (mean age 12.5 ± 4.6 years, 69.1% male), 19 (34.5%) of whom had LVOTO, underwent cardiac magnetic resonance and echocardiography with quantification of phasic components of biatrial function, biventricular diastolic function and fibrosis...
June 7, 2018: European Radiology
Sergio Berti, Luigi Emilio Pastormerlo, Gennaro Santoro, Elvis Brscic, Matteo Montorfano, Luigi Vignali, Paolo Danna, Claudio Tondo, Marco Rezzaghi, Gianpiero D'Amico, Amerigo Stabile, Salvatore Saccà, Giuseppe Patti, Antonio Rapacciuolo, Arnaldo Poli, Paolo Golino, Paolo Magnavacchi, Francesco Meucci, Bruno Pezzulich, Miroslava Stolcova, Giuseppe Tarantini
OBJECTIVES: This study sought to evaluate the feasibility, safety, and efficacy of intracardiac echocardiography (ICE)-guided versus transesophageal echocardiography (TEE)-guided left atrial appendage occlusion (LAAO) by the use of Amplatzer Cardiac Plug or Amulet devices included in a large Italian registry. BACKGROUND: TEE is widely used for LAAO procedure guidance. ICE may be a potential alternative imaging modality in LAAO. METHODS: Data from 604 LAAO procedures performed in 16 Italian centers were reviewed...
June 11, 2018: JACC. Cardiovascular Interventions
Luis Nombela-Franco, Josep Rodés-Cabau, Ignacio Cruz-Gonzalez, Xavier Freixa, Luis Asmarats, Hipólito Gutiérrez, Shweta Sahay, Tania Rodriguez-Gabella, Jose Carlos Moreno-Samos, Gabriela Tirado-Conte, Luis Renier Goncalves-Ramirez, Juan Carlos Rama-Merchan, Ignacio J Amat-Santos, Gilles O'Hara, Victoria Martín-Yuste, Armando Bethencourt, Pilar Jimenez-Quevedo, Carlos Macaya
OBJECTIVES: The aims of this registry were to determine the incidence, predictors, and prognostic value of periprocedural acute kidney injury (AKI) after left atrial appendage closure (LAAC). BACKGROUND: No data exist on the occurrence of AKI after LAAC. METHODS: A total of 355 patients undergoing LAAC were included in the study. AKI was defined as an absolute or a relative increase in serum creatinine of >0.3 mg/dl or ≥50%, respectively, after the procedure or the need for hemodialysis during index hospitalization...
June 11, 2018: JACC. Cardiovascular Interventions
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