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Dimensional ratios of the mitral valve

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https://www.readbyqxmd.com/read/28391001/three-dimensional-mitral-valve-morphology-and-age-related-trends-children-and-young-adults-with-structurally-normal-hearts-using-transthoracic-echocardiography
#1
Matthew A Jolley, Sunil J Ghelani, Adi Adar, David M Harrild
BACKGROUND: The mitral valve has a complex three-dimensional (3D) morphology that is incompletely described by two-dimensional echocardiography (echo). Three-dimensional echo provides a more robust tool to analyze the mitral valve. The shape of the mitral annulus and leaflets, and differences with age, have not been described by 3D echo in normal children. Our objective was to characterize and quantify the 3D mitral valve morphology in children with normal transthoracic echocardiograms over a broad spectrum of age and to identify differences in valve shape with age...
April 6, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28289019/insufficient-leaflet-remodeling-in-patients-with-atrial-fibrillation-association-with-the-severity-of-mitral-regurgitation
#2
Nobuyuki Kagiyama, Akihiro Hayashida, Misako Toki, Shota Fukuda, Minako Ohara, Atsushi Hirohata, Keizo Yamamoto, Mitsuaki Isobe, Kiyoshi Yoshida
BACKGROUND: The relationship between annular dilatation caused by atrial fibrillation (AF) and mitral regurgitation (MR) remains controversial. We hypothesized that the small ratio of total leaflet area/annulus area (TLA/AA), reflecting insufficient leaflet remodeling to annular dilatation, is a main component of MR in patients with AF. METHODS AND RESULTS: Three-dimensional transesophageal echocardiographic data of the mitral valve were analyzed in 28 AF patients with moderate or severe MR (MR group), age- and sex-matched 56 AF patients with mild or less MR (non-MR group), and 16 control subjects...
March 2017: Circulation. Cardiovascular Imaging
https://www.readbyqxmd.com/read/28279678/mitral-valve-morphology-assessed-by-three-dimensional-transthoracic-echocardiography-in-healthy-dogs-and-dogs-with-myxomatous-mitral-valve-disease
#3
G Menciotti, M Borgarelli, M Aherne, S Wesselowski, J Häggström, I Ljungvall, S M Lahmers, J A Abbott
OBJECTIVE: To assess differences in morphology of the mitral valve (MV) between healthy dogs and dogs affected by myxomatous mitral valve disease (MMVD) using real-time transthoracic three-dimensional echocardiography (RT3DE). ANIMALS: Thirty-four were normal dogs and 79 dogs were affected by MMVD. METHODS: Real-time transthoracic three-dimensional echocardiography mitral datasets were digitally recorded and analyzed using dedicated software...
April 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28197645/subclinical-decrease-in-myocardial-function-in-asymptomatic-infants-of-diabetic-mothers-a-tissue-doppler-study
#4
Jenny E Zablah, Dorota Gruber, Guillaume Stoffels, Estefania G Cabezas, Denise A Hayes
Infants of diabetic mothers (IDMs) with hypertrophic cardiomyopathy are recognized to have impaired myocardial performance, but less is known about ventricular function in IDMs without hypertrophy. We hypothesized that in asymptomatic newborns with normal two-dimensional echocardiographic evaluations, pulsed wave tissue Doppler imaging (TDI) would suggest a subclinical decrease in the cardiac function of IDMs compared to infants of non-diabetics (nIDMs). This is a retrospective cohort study of asymptomatic neonates ≥36 weeks gestation, at 0-7 days of life, with normal standard echocardiograms...
February 14, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28041955/cardiac-dysfunction-in-children-and-young-adults-with-heart-transplantation-a-comprehensive-echocardiography-study
#5
Marcello Chinali, Claudia Esposito, Giorgia Grutter, Roberta Iacobelli, Alessandra Toscano, Maria Grazia D'Asaro, Alessia Del Pasqua, Gianluca Brancaccio, Francesco Parisi, Fabrizio Drago, Gabriele Rinelli
BACKGROUND: Transplanted heart dysfunction is a serious life-threatening condition in pediatric transplant recipients. Several studies have focused on echocardiographic detection of early signs of cardiac dysfunction in this population. We evaluated advanced echocardiographic indices of cardiac function in a large sample of children and young adults with heart transplants with apparently normal cardiac function. METHODS: The study included 60 patients with normal ejection fraction with transplantation performed at pediatric age between 1986 and 2014 and 60 healthy control subjects...
May 2017: Journal of Heart and Lung Transplantation
https://www.readbyqxmd.com/read/27989043/distant-position-of-chordae-from-coaptation-causes-mitral-regurgitation-in-patients-with-atrial-fibrillation
#6
Yuji Itabashi, Hirotsugu Mihara, Javier Berdejo, Hiroto Utsunomiya, Takahiro Shiota
BACKGROUND: The study aim was to investigate the mechanism of mitral regurgitation (MR) in lone atrial fibrillation (AF) patients using three-dimensional (3D) transesophageal echocardiography (TEE). METHODS: A retrospective analysis was conducted of 64 patients with AF and a normal left ventricle, and without prolapse of the mitral valve. Among these patients, significant MR was not identified in 33 cases (AF+MR- group) but was present in 31 cases (AF+MR+ group)...
May 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27753898/os-01-07-clinical-importance-of-collagen-metabolism-markers-in-rheumatic-heart-valve-disease-in-indian-subpopulation
#7
Tanima Banerjee, Somaditya Mukherjee, Sudip Ghosh, Monodeep Biswas, Santanu Datta, Sanjib Pattari, Shelly Chatterjee, Arun Bandyopadhyay
OBJECTIVE: Rheumatic Heart Disease (RHD), a chronic acquired heart disorder results from Acute Rheumatic Fever. RHD is mostly prevalent in developing nations which is mainly diagnosed by transthoracic echocardiography. Till date, there is no biochemical marker for disease management. In the present study we aim to investigate whether mitral valve remodeling contributes to altered levels of circulating biomarkers of collagen metabolism in rheumatic heart disease. DESIGN AND METHOD: The study involved RHD subjects with before and after valve replacement surgery which includes age and sex matched controls...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27643244/os-01-07-clinical-importance-of-collagen-metabolism-markers-in-rheumatic-heart-valve-disease-in-indian-subpopulation
#8
Tanima Banerjee, Somaditya Mukherjee, Sudip Ghosh, Monodeep Biswas, Santanu Datta, Sanjib Pattari, Shelly Chatterjee, Arun Bandyopadhyay
OBJECTIVE: Rheumatic Heart Disease (RHD), a chronic acquired heart disorder results from Acute Rheumatic Fever. RHD is mostly prevalent in developing nations which is mainly diagnosed by transthoracic echocardiography. Till date, there is no biochemical marker for disease management. In the present study we aim to investigate whether mitral valve remodeling contributes to altered levels of circulating biomarkers of collagen metabolism in rheumatic heart disease. DESIGN AND METHOD: The study involved RHD subjects with before and after valve replacement surgery which includes age and sex matched controls...
September 2016: Journal of Hypertension
https://www.readbyqxmd.com/read/27502294/predicting-outcomes-after-percutaneous-mitral-balloon-valvotomy-the-impact-of-left-ventricular-strain-imaging
#9
Sergio Barros-Gomes, Mackram F Eleid, Jordi S Dahl, Cristina Pislaru, Rick A Nishimura, Patricia A Pellikka, Sorin V Pislaru
AIMS: This study aimed (1) to evaluate the impact of preprocedural two-dimensional speckle-tracking echocardiography (2D-STE) on long-term outcome after successful percutaneous mitral balloon valvotomy (PMBV) in patients with mitral stenosis (MS) and (2) to determine whether 2D-STE detects underlying diastolic dysfunction as defined by invasive haemodynamic study. METHODS AND RESULTS: Sixty-four consecutive MS patients with preserved left ventricular ejection fraction (LVEF ≥50%) and who underwent successfully PMBV were studied...
August 7, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/27448551/mitral-valve-repair-using-a-semirigid-ring-patient-selection-and-early-outcomes
#10
Song Wan, Alex Pw Lee, Saina Attaran, Peter Sy Yu, Sylvia Sw Au, Micky Wt Kwok, Rainbow Wh Lau, Randolph Hl Wong, Innes Yp Wan, Siu-Keung Ng, Malcolm J Underwood
BACKGROUND: Commonly used complete mitral annuloplastic rings include saddle-shaped and semirigid rings, with no clear indication for either type. A semirigid ring may be preferred in patients whose native mitral saddle shape is well maintained. We present our experience of using semirigid rings for mitral valve repair. METHODS: We routinely measured the annular height-to-commissural width ratio by 3-dimensional transesophageal echocardiography prior to mitral repair...
September 2016: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/27153370/the-geometrical-effect-of-different-annuloplasty-rings-on-mitral-valve-annulus
#11
COMPARATIVE STUDY
Sameer Al-Maisary, Bastian Graser, Sandy Engelhardt, Ivo Wolf, Matthias Karck, Raffaele DE Simone
BACKGROUND: Different types of mitral annuloplasty rings are commercially available. The aim of this study was to investigate the effect of implantation of six types of annuloplasty rings on the geometry and dynamics of the mitral valve. METHODS: Three-dimensional echocardiography images of 42 patients were acquired to visualize the mitral valve annulus. Virtual representations of six commercially available annuloplasty rings were matched to anatomical mitral annuli of each patient according to anterolateral-posteromedial diameter...
June 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/27107264/acute-effect-of-mitraclip-implantation-on-mitral-valve-geometry-in-patients-with-functional-mitral-regurgitation-insights-from-three-dimensional-transoesophageal-echocardiography
#12
Ibtihal Al Amri, Philippe Debonnaire, Frank van der Kley, Martin J Schalij, Jeroen J Bax, Nina Ajmone Marsan, Victoria Delgado
AIMS: Our aim was to evaluate the acute effects of transcatheter edge-to-edge mitral valve repair using the MitraClip device on mitral valve geometry in patients with functional mitral regurgitation (FMR). METHODS AND RESULTS: Forty-two patients (age 73 years [IQ range 66.1-78.0], 55% men, 62% ischaemic FMR) with moderate-to-severe and severe FMR treated with the MitraClip were included. Three-dimensional transoesophageal echocardiography was performed prior to and immediately after MitraClip implantation...
April 20, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27059745/assessment-of-cardiac-function-in-absence-of-congenital-and-acquired-heart-disease-in-patients-with-down-syndrome
#13
Sevket Balli, Ilker Kemal Yucel, Ayse Esin Kibar, Ibrahim Ece, Eylem Sen Dalkiran, Sukru Candan
BACKGROUND: Extra genetic material in patients with Down syndrome (DS) may affect the function of any organ system. We evaluated cardiac functions using conventional tissue Doppler and two-dimensional speckle tracking echocardiography in patients with DS in the absence of congenital and acquired heart disease in patients. METHODS: A total of 115 patients with DS between 6 and 13 years of age with clinically and anatomically normal heart and 55 healthy children were included in this cross-sectional study...
November 2016: World Journal of Pediatrics: WJP
https://www.readbyqxmd.com/read/27027836/two-dimensional-left-atrium-to-aorta-ratios-and-left-ventricular-m-mode-transthoracic-echocardiographic-measurements-in-clinically-normal-adult-dachshunds
#14
Chee Kin Lim, Geoffrey T Fosgate, Henry W Green, Robert M Kirberger
OBJECTIVE: To estimate the left atrium-to-aorta ratio (LA:Ao) and establish 95% prediction intervals for left ventricular M-mode transthoracic echocardiographic measurements in clinically normal adult Dachshunds. ANIMALS: 40 healthy Dachshunds. PROCEDURES: For each dog, 3 standard 2-D echocardiographic methods (diameter, circumference, and cross-sectional area) were used to measure the left atrium and aorta and calculate the LA:Ao from right parasternal short axis (RPSA) images obtained at the level of the aortic valve cusps...
April 2016: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/27009978/comparison-of-four-echocardiographic-methods-to-determine-left-atrial-size-in-dogs
#15
COMPARATIVE STUDY
M Höllmer, J L Willesen, A Tolver, J Koch
OBJECTIVES: To compare a linear and three volume-based two-dimensional echocardiographic methods for measuring LA size: left atrium to aorta ratio (LA/Ao ratio), biplane area-length, biplane modified Simpson and monoplane area-length. ANIMALS: One hundred seventy-six client-owned dogs of different breeds, 88 healthy dogs and 88 dogs with myxomatous mitral valve disease of different disease severity. METHODS: The left apical four- and two-chamber views were used to measure LA volumes...
June 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/26937911/left-ventricular-diastolic-dysfunction-assessed-by-conventional-echocardiography-and-spectral-tissue-doppler-imaging-in-adolescents-with-arterial-hypertension
#16
Aleksandra Morka, Leslaw Szydlowski, Ewa Moric-Janiszewska, Boguslaw Mazurek, Grazyna Markiewicz-Loskot, Sebastian Stec
Compared to conventional echocardiography, spectral tissue Doppler imaging (s-TDI) allows more precise evaluation of diastolic cardiac function. The purpose of this study was to conduct s-TDI to analyze the slow movement of the left ventricular (LV) myocardium in adolescents with systemic arterial hypertension (HT) and to determine whether patients with HT suffer from LV diastolic dysfunction. The study group comprised 69 consecutive patients (48 boys and 21 girls aged 14-17 years [mean, 15.5 ± 1.1 years]) with primary HT, and the control group comprised 48 healthy participants (24 boys and 24 girls aged 14-17 years [mean, 15...
February 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/26832312/assessment-of-mitral-valve-morphology-using-three-dimensional-echocardiography-feasibility-and-reference-values
#17
G Menciotti, M Borgarelli, M Aherne, J Häggström, I Ljungvall, S M Lahmers, J A Abbott
OBJECTIVES: To evaluate the feasibility of real time transthoracic three-dimensional echocardiography (RT3DE) for evaluation of normal canine mitral valves (MVs), and to provide reference values for this technique. ANIMALS: Forty-three cardiologically healthy, not sedated dogs. METHODS: Transthoracic RT3DE mitral datasets were acquired during two consecutive 6-month periods. The datasets were analyzed using commercially available software...
June 2016: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/26822698/left-ventricular-volumes-by-echocardiography-in-chronic-aortic-and-mitral-regurgitations
#18
Odd Bech-Hanssen, Christian Lars Polte, Kerstin M Lagerstrand, Åse A Johnsson, Bahaa M Fadel, Sinsia A Gao
Objectives Cut-off values for left ventricular (LV) dimensions indicating severe valve regurgitation have not been defined. The aim of this study was to establish echocardiographic cut-off values for LV dimensions indicating severe chronic aortic (AR) or mitral (MR) regurgitation. Design The hemodynamic significance was confirmed by documented reduction of end-diastolic volume (EDV) and symptom relief after surgery. Eighty-three patients with moderate or severe regurgitation (AR, n = 41; MR, n = 42) without other cardiac conditions underwent prospectively two-dimensional (2DE), real-time three-dimensional (RT3DE) echocardiography and cardiovascular magnetic resonance (CMR) exams within 4 h...
June 2016: Scandinavian Cardiovascular Journal: SCJ
https://www.readbyqxmd.com/read/26664902/mitral-annular-kinetics-left-atrial-and-left-ventricular-diastolic-function-post-mitral-valve-repair-in-degenerative-mitral-regurgitation
#19
Chun G Schiros, Mustafa I Ahmed, David C McGiffin, Xiaoxia Zhang, Steven G Lloyd, Inmaculada Aban, Thomas S Denney, Louis J Dell'Italia, Himanshu Gupta
OBJECTIVE: The relationship of mitral annular (MA) kinetics to left ventricular (LV) and left atrial (LA) function before and after mitral valve (MV) repair has not been well studied. Here we sought to provide comprehensive analysis that relates to MA motions, and LA and LV diastolic function post MV repair. METHODS: Three-dimensional analyses of mitral annular motion, LA function, and LV volumetric and diastolic strain rates were performed on 35 degenerative mitral regurgitation (MR) patients at baseline and 1-year post MV repair, and 51 normal controls, utilizing cardiac magnetic resonance imaging with tissue tagging...
2015: Frontiers in Cardiovascular Medicine
https://www.readbyqxmd.com/read/26467362/assessment-of-left-atrial-volume-and-mechanical-functions-using-real-time-three-dimensional-echocardiography-in-patients-with-mitral-annular-calcification
#20
Adil Bayramoğlu, Hakan Taşolar, Yılmaz Ömür Otlu, Şıho Hidayet, Fuat Kurt, Adil Doğan, Hasan Pekdemir
OBJECTIVE: Mitral annular calcification (MAC) is degeneration of the fibrous annular ring of the mitral valve. Left atrial (LA) function and volume have been evaluated by many methods; however, none have used real-time three-dimensional echocardiography (RT3DE) in patients with MAC. Our study is the first to evaluate LA volume and mechanical function using RT3DE in patients with MAC. METHODS: Our study was a prospective cross-sectional study. In total, 32 patients with echocardiographic evidence of MAC and 30 volunteers without MAC were enrolled in the study...
January 2016: Anatolian Journal of Cardiology
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