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tricuspid annulus

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https://www.readbyqxmd.com/read/29157520/interventional-imaging-of-the-tricuspid-valve
#1
REVIEW
Francesco Ancona, Eustachio Agricola, Stefano Stella, Cristina Capogrosso, Claudia Marini, Alberto Margonato, Rebecca T Hahn
Nowadays, reasonable transcatheter tricuspid valve (TV) interventions are emerging as therapeutic options for functional tricuspid regurgitation (TR). The preprocedural planning is based on a multimodality imaging approach, which aims to (1) define the mechanisms of TR, (2) characterize TV morphology, (3) analyze the anatomic relationship between the TV apparatus and other structures, and (4) determine the size of the tricuspid annulus and vena cavae. Intraprocedural guidance is based mainly on transesophageal echocardiography (seldom transthoracic) and fluoroscopy, with the recent introduction of fusion imaging...
January 2018: Interventional cardiology clinics
https://www.readbyqxmd.com/read/29157516/anatomy-of-the-tricuspid-valve-pathophysiology-of-functional-tricuspid-regurgitation-and-implications-for-percutaneous-therapies
#2
REVIEW
Nicola Buzzatti, Michele De Bonis, Neil Moat
The tricuspid valve is a complex dynamic apparatus made up of many different closely linked structures: the annulus, the three leaflets, the chordae, the papillary muscles and the right ventricle. Other nearby structures, such as the coronary sinus ostium, the conduction system, the membranous septum, and the right coronary artery must be taken into account when dealing with the tricuspid. Annulus dilation and leaflet tethering due to right ventricular remodeling are the 2 major mechanisms responsible for most tricuspid regurgitation cases...
January 2018: Interventional cardiology clinics
https://www.readbyqxmd.com/read/29153573/3-dimensional-echocardiographic-analysis%C3%A2-of-the-tricuspid-annulus-provides%C3%A2-new-insights-into-tricuspid-valve%C3%A2-geometry-and-dynamics
#3
Karima Addetia, Denisa Muraru, Federico Veronesi, Csaba Jenei, Giacomo Cavalli, Stephanie A Besser, Victor Mor-Avi, Roberto M Lang, Luigi P Badano
OBJECTIVES: The authors used transthoracic 3-dimensional transthoracic echocardiography (3DE) to characterize tricuspid annulus (TA) geometry and dynamics in healthy volunteers. BACKGROUND: Accurate sizing of the TA is essential for planning tricuspid annuloplasty and for implantation of new percutaneous tricuspid devices. METHODS: 3DE of the TA from 209 healthy volunteers was analyzed using custom software to measure TA area, perimeter, circularity, and dimensions at end diastole (equals tricuspid valve closure), mid-systole, end systole, and late diastole...
November 10, 2017: JACC. Cardiovascular Imaging
https://www.readbyqxmd.com/read/29143104/left-ventricular-end-diastolic-dimension-and-septal-e-are-predictors-of-cardiac-index-at-rest-while-tricuspid-annular-plane-systolic-excursion-is-a-predictor-of-peak-oxygen-uptake-in-patients-with-pulmonary-hypertension
#4
Yoshihisa Nakano, Naoki Okumura, Shiro Adachi, Shigetake Shimokata, Fumitaka Tajima, Yoshihiro Kamimura, Toyoaki Murohara, Takahisa Kondo
Little is known regarding a correlation of hemodynamics at rest or exercise capacity with echocardiographic parameters in patients with pulmonary hypertension (PH). To clarify these potential correlations, we performed transthoracic echocardiography, right heart catheterization, and cardiopulmonary exercise testing in 53 patients with pulmonary arterial hypertension (PAH) and chronic thromboembolic pulmonary hypertension (CTEPH). Left ventricular end-diastolic dimension (LVDd), early diastolic velocity of the septal mitral annulus (septal e'), tricuspid regurgitation peak gradient (TRPG), and tricuspid annular plane systolic excursion (TAPSE) were significantly correlated with cardiac index (LVDd; r = 0...
November 15, 2017: Heart and Vessels
https://www.readbyqxmd.com/read/29139013/engineering-analysis-of-tricuspid-annular-dynamics-in-the-beating-ovine-heart
#5
Manuel K Rausch, Marcin Malinowski, Penny Wilton, Asghar Khaghani, Tomasz A Timek
Functional tricuspid regurgitation is a significant source of morbidity and mortality in the US. Furthermore, treatment of functional tricuspid regurgitation is suboptimal with significant recurrence rates, which may, at least in part, be due to our limited knowledge of the relationship between valvular shape and function. Here we study the dynamics of the healthy in vivo ovine tricuspid annulus to improve our understanding of normal annular deformations throughout the cardiac cycle. To this end, we determine both clinical as well as engineering metrics of in vivo annular dynamics based on sonomicrometry crystals surgically attached to the annulus...
November 14, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/29116970/assessment-of-tricuspid-annular-motion-by-speckle-tracking-in-anesthetized-patients-using-transesophageal-echocardiography
#6
Tao Shen, Michael H Picard, Lanqi Hua, Sara M Burns, Michael N Andrawes
BACKGROUND: The perioperative assessment of right ventricular (RV) function remains a challenge. Tricuspid annular plane systolic excursion (TAPSE) using M-mode is a widely used measure of RV function. However, accurate alignment of the ultrasound beam with the direction of annular movement can be difficult with transesophageal echocardiography (TEE) to measure TAPSE, precluding effective use of M-mode to measure annular excursion. Tracking of specular reflectors in the myocardium may provide an angle-independent method to assess annular motion with TEE...
November 7, 2017: Anesthesia and Analgesia
https://www.readbyqxmd.com/read/29111309/functional-tricuspid-regurgitation-and-the-dynamic-tricuspid-annulus-new-perspectives-from-3d-tee-imaging
#7
EDITORIAL
Reza Arsanjani, Harish Ramakrishna
No abstract text is available yet for this article.
July 29, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29106546/clinical-validation-of-automatic-local-activation-time-annotation-during-focal-premature-ventricular-complex-ablation-procedures
#8
Juan Acosta, David Soto-Iglesias, Juan Fernández-Armenta, Manuel Frutos-López, Beatriz Jáuregui, Eduardo Arana-Rueda, Marcos Fernández, Diego Penela, Alejandro Alcaine, Lucas Cano, Alonso Pedrote, Antonio Berruezo
Aims: Current navigation systems incorporate algorithms for automatic identification of local activation time (LAT). However, data about their utility and accuracy in premature ventricular complex (PVC) ablation procedures are scarce. This study analyses the accuracy of an algorithmic method based on automatic annotation of the maximal negative slope of the unipolar electrogram within the window demarcated by the bipolar electrogram compared with conventional manual annotation during PVC ablation procedures...
November 2, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/29104202/-successful-surgical-treatment-of-primary-cardiac-lymphoma-detected-with-the-onset-of-acute-heart-failure-report-of-a-case
#9
Ryosai Inoue, Bun Nakamura, Masahiro Inagaki, Taro Fujii, Koji Hirano, Yasumi Maze, Toshiya Tokui
A 83-year-old woman, suffering from rapidly worsening dyspnea and weight gain from a week ago, was referred for evaluation and treatment of cardiac tumor in the right atrium. Echocardiography and enhanced computed tomography revealed a large tumor, more than 6 cm, occupying the right atrium and blocking the tricuspid valve inflow. Electrocardiogram showed bradycardiac atrial fibrillation. We performed partial resection with cardiopulmonary bypass, in order to improve hemodynamics and to make a definite diagnosis...
November 2017: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/29102273/hemodynamic-assessment-of-extra-cardiac-tricuspid-valves-using-particle-image-velocimetry
#10
Munirah Ismail, Foad Kabinejadian, Yen Ngoc Nguyen, Edgar Tay Lik Wui, Sangho Kim, Hwa Liang Leo
There has not been much progress in the development of transcatheter tricuspid valves to treat tricuspid regurgitation because of the difficulty in anchoring a stented valve onto the complex tricuspid annulus. Hence, the concept of heterotopic implantation of the transcatheter tricuspid valve onto the cavo-atrial junction was proposed. However, to date there has been no detailed in vitro investigation of the hemodynamic performance of this new device. The study utilises both 2-D and 3-D particle image velocimetry (PIV) to interrogate the flow patterns in the vicinity of the extra-cardiac tricuspid valves in an in vitro physiological flow loop, specifically at four measurement locations in the cavo-atrial anatomy...
December 2017: Medical Engineering & Physics
https://www.readbyqxmd.com/read/29100836/changes-in-tricuspid-annular-geometry-in-patients-with-functional-tricuspid-regurgitation
#11
Ting Hai, Yannis Amador, Feroze Mahmood, Jelliffe Jeganathan, Arash Khamooshian, Ziyad O Knio, Robina Matyal, Alina Nicoara, David C Liu, Venkatachalam Senthilnathan, Kamal R Khabbaz
OBJECTIVE: To determine whether the indices of tricuspid annular dynamics that signify irreversible tricuspid valvular remodeling can improve surgical decision making by helping to better identify patients with functional tricuspid regurgitation who could benefit from annuloplasty. DESIGN: Retrospective analysis study. SETTING: Tertiary hospital. PARTICIPANTS: A total number of 55 patients were selected, 18 with functional tricuspid valve (TV) regurgitation and 37 normal nonregurgitant TVs...
June 20, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/29081909/geometric-comparison-of-the-mitral-and-tricuspid-valve-annulus-insights-from-three-dimensional-transesophageal-echocardiography
#12
Amgad N Makaryus, Haisam Ismail, John N Makaryus, Dali Fan
AIM: To apply real time three-dimensional transesophageal echocardiography (RT3D TEE) for quantitative and qualitative assessment of the mitral valve annulus (MVA) and tricuspid valve annulus (TVA) in the same patient. METHODS: Our retrospective cohort study examined the MVA and TVA in 49 patients by RT3D TEE. MVA and TVA shape were examined by TEE. The MVA and TVA volume data set images were acquired in the mid esophageal 4-chamber view. The MVA and TVA were acquired separately, with optimization of each for the highest frame rate and image quality...
September 26, 2017: World Journal of Cardiology
https://www.readbyqxmd.com/read/29081399/re-visiting-anatomical-macroreentrant-tachycardia-after-atrial-fibrillation-ablation-using-ultra-high-resolution-mapping-implications-for-ablation
#13
Masateru Takigawa, Nicolas Derval, Antonio Frontera, Ruairidh Martin, Seigo Yamashita, Ghassen Cheniti, Konstantinos Vlachos, Nathaniel Thompson, Takeshi Kitamura, Michel Wolf, Gregoire Massoullie, Clair Martin, Nora Al-Jefairi, Sana Amraoui, Josselin Duchateau, Nicolas Klotz, Thomas Pambrun, Arnaud Denis, Frederic Sacher, Hubert Cochet, Hocini Meleze, Michel Haissaguierre, Pierre Jais
BACKGROUND: Anatomical macroreentrant atrial tachycardias (MATs) are conventionally reported to depend on the cavotricuspid isthmus (CTI), the mitral isthmus (MI), or the left atrial roof, and are commonly seen following catheter ablation (CA) for atrial fibrillation (AF). OBJECTIVES: To define the precise circuits of anatomical MAT with ultra-high resolution mapping. METHODS: In 57 patients (mean age, 62 years; 10 female) who developed at least one anatomical MAT, we analyzed 88 MAT circuits including 16 peri-tricuspid, 42 peri-mitral, and 30 roof-dependent circuits, using high-density mapping and entrainment...
October 25, 2017: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/29081323/cardiovascular-adaptation-to-extrauterine-life-after-intrauterine-growth-restriction
#14
Luciana Rodriguez-Guerineau, Miriam Perez-Cruz, María D Gomez Roig, Francisco J Cambra, Juan Carretero, Fredy Prada, Olga Gómez, Fátima Crispi, Joaquim Bartrons
Introduction The adaptive changes of the foetal heart in intrauterine growth restriction can persist postnatally. Data regarding its consequences for early circulatory adaptation to extrauterine life are scarce. The aim of this study was to assess cardiac morphometry and function in newborns with late-onset intrauterine growth restriction to test the hypothesis that intrauterine growth restriction causes cardiac shape and functional changes at birth. METHODS: A comprehensive echocardiographic study was performed in 25 neonates with intrauterine growth restriction and 25 adequate-for-gestational-age neonates...
October 30, 2017: Cardiology in the Young
https://www.readbyqxmd.com/read/29079046/global-and-regional-right-ventricular-function-assessed-by-novel-three-dimensional-speckle-tracking-echocardiography
#15
Tomoko Ishizu, Yoshihiro Seo, Akiko Atsumi, Yumiko Oishi Tanaka, Masayoshi Yamamoto, Tomoko Machino-Ohtsuka, Hitoshi Horigome, Kazutaka Aonuma, Yasushi Kawakami
BACKGROUND: Accurate assessment of global and regional right ventricular (RV) systolic function is challenging. The aims of this study were to confirm the reliability and feasibility of a three-dimensional (3D) speckle-tracking echocardiography (STE) system, using comparison with cardiac magnetic resonance imaging (CMR), and to assess the contribution of regional RV function to global function. METHODS: In a retrospective, cross-sectional study setting, RV volumetric data were studied in 106 patients who were referred for both CMR and 3D echocardiography within 1 month...
October 24, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/29067078/tetralogy-of-fallot-repair-in-patients-presenting-after-infancy-a-single-surgeon-experience
#16
Tariq Waqar, Muhammad Usman Riaz, Tania Mahar
OBJECTIVE: To determine the early surgical outcomes of Tetralogy of Fallot (TOF) repair in children and young adults operated after the age of one year. METHODS: In this retrospective study, 307 cases of primary repair of Tetralogy of Fallot were done between September 2012 to February 2017, at CPE Institute of cardiology, Multan. Out of 307 operated patients, 4 (1.3%) patients had previous modified Blalock Taussig shunts, 2 (0.6%) associated ASD with TOF, 3 (0...
July 2017: Pakistan Journal of Medical Sciences Quarterly
https://www.readbyqxmd.com/read/28994686/lutembacher-syndrome-dilemma-of-doing-a-tricuspid-annuloplasty
#17
A V Varsha, Gladdy George, Raj Sahajanandan
We discuss the case of a 24-year-old woman with Lutembacher syndrome and severe tricuspid regurgitation (TR) who underwent surgical closure of atrial septal defect and mitral valve replacement without tricuspid annuloplasty despite a severe TR and a large tricuspid annulus on preoperative echo. The pathophysiology of Lutembacher syndrome is discussed below. The utility of perioperative echocardiography in assessing the annular diameter, tenting area and coaptation depth and thus providing insights into the functioning of the tricuspid valve will also be emphasized...
October 2017: Annals of Cardiac Anaesthesia
https://www.readbyqxmd.com/read/28988491/left-atrial-outflow-obstruction-in-double-outlet-right-atrium
#18
Arun Gopalakrishnan, Bijulal Sasidharan, Jaganmohan Tharakan, Ajitkumar Valaparambil
We describe an unusual case of partial atrioventricular septal defect with malalignment of the septum primum to the left atrium with respect to the ventricular septum, committing the tricuspid valve to both ventricles (double-outlet right atrium). Abnormal attachment of the septum primum to the lateral aspect of mitral annulus resulted in left atrial outflow obstruction. The patient underwent successful surgical correction.
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28988308/improving-the-role-of-echocardiography-in-studying-the-right-ventricle-of-repaired-tetralogy-of-fallot-patients-comparison-with-cardiac-magnetic-resonance
#19
Carolina D'Anna, Armando Caputi, Benedetta Natali, Benedetta Leonardi, Aurelio Secinaro, Gabriele Rinelli, Alessia Del Pasqua, Claudia Esposito, Adriano Carotti, Fabrizio Drago, Marcello Chinali
Right ventricular (RV) evaluation represents one of the major clinical tasks in the follow-up of repaired tetralogy of Fallot patients (rToF) with pulmonary valve regurgitation, as both severe RV dilatation and dysfunction are key factors in defining the need of pulmonary valve replacement. The aim of our study was to report the diagnostic accuracy of echocardiography in the identification of rToF patients with severely dilated and/or depressed RV as compared to cardiac magnetic resonance (CMR). Among our patients with rToF, a subgroup of 95 (17...
October 7, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28982563/the-international-multicenter-trivalve%C3%A2-registry-which-patients-are-undergoing-transcatheter-tricuspid-repair
#20
Maurizio Taramasso, Rebecca T Hahn, Hannes Alessandrini, Azeem Latib, Adrian Attinger-Toller, Daniel Braun, Eric Brochet, Kim A Connelly, Paolo Denti, Florian Deuschl, Andrea Englmaier, Neil Fam, Christian Frerker, Joerg Hausleiter, Jean-Michel Juliard, Ryan Kaple, Felix Kreidel, Karl Heinz Kuck, Shingo Kuwata, Marco Ancona, Margarita Malasa, Tamim Nazif, Georg Nickenig, Fabian Nietlispach, Alberto Pozzoli, Ulrich Schäfer, Joachim Schofer, Robert Schueler, Gilbert Tang, Alec Vahanian, John G Webb, Ermela Yzeiraj, Francesco Maisano, Martin B Leon
OBJECTIVES: This study sought to develop a large, international registry to evaluate the diffusion of these approaches and investigate patient characteristics and initial clinical results. BACKGROUND: Several transcatheter tricuspid valve therapies are emerging as therapeutic options for patients with severe symptomatic tricuspid regurgitation (TR), generally a high-risk surgical population. METHODS: The TriValve (Transcatheter Tricuspid Valve Therapies) registry included 106 high-risk patients (76 ± 9 years of age; 60...
October 9, 2017: JACC. Cardiovascular Interventions
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