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https://www.readbyqxmd.com/read/28212053/transthoracic-echocardiography-pitfalls-and-limitations-as-delineated-at-cardiac-ct-and-mr-imaging
#1
Sachin B Malik, Natalie Chen, Rex A Parker, Joe Y Hsu
Transthoracic echocardiography ( TTE transthoracic echocardiography ) is a critical tool in the field of clinical cardiology. It often serves as one of the first-line imaging modalities in the evaluation of cardiac disease owing to its low cost, portability, widespread availability, lack of ionizing radiation, and ability to evaluate both anatomy and function of the heart. Consequently, a large majority of patients undergoing a cardiac computed tomography (CT) or magnetic resonance (MR) imaging examination will have a TTE transthoracic echocardiography available for review...
February 17, 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28207320/cardiac-findings-in-quarter-horses-with-heritable-equine-regional-dermal-asthenia
#2
Erin L Brinkman, Benjamin C Weed, Sourav S Patnaik, Bryn L Brazile, Ryan M Centini, Robert W Wills, Bari Olivier, Dodd G Sledge, Jim Cooley, Jun Liao, Ann M Rashmir-Raven
OBJECTIVE To compare biomechanical and histologic features of heart valves and echocardiographic findings between Quarter Horses with and without heritable equine regional dermal asthenia (HERDA). DESIGN Prospective case-control study. ANIMALS 41 Quarter Horses. PROCEDURES Ultimate tensile strength (UTS) of aortic and mitral valve leaflets was assessed by biomechanical testing in 5 horses with HERDA and 5 horses without HERDA (controls). Histologic evaluation of aortic and mitral valves was performed for 6 HERDA-affected and 3 control horses...
March 1, 2017: Journal of the American Veterinary Medical Association
https://www.readbyqxmd.com/read/28203542/robotic-trans-atrial-and-trans-mitral-ventricular-septal-resection
#3
REVIEW
W Randolph Chitwood
Localized ventricular septal hypertrophy, also known as idiopathic hypertrophic subaortic stenosis or idiopathic hypertrophic subaortic septal obstruction (IHSS), can create severe ventricular outflow obstruction. This often results in a high sub-aortic pressure gradient with potentially lethal symptoms. In 1960, Braunwald described the hemodynamic characteristics of IHSS, and thereafter, Morrow developed a trans-aortic approach to resect a large part of the ventricular septum, enlarging the outflow tract. The Morrow operation has remained the gold standard for surgically treating this pathology...
January 2017: Annals of Cardiothoracic Surgery
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/28195551/b-type-natriuretic-peptide-and-echocardiography-reflect-volume-changes-during-pregnancy
#5
Janet M Burlingame, Kelly Yamasato, Hyeong Jun Ahn, Todd Seto, W H Wilson Tang
OBJECTIVE: To evaluate B-type natriuretic peptide (BNP) and N-terminal pro-B-type natriuretic peptide (NT-proBNP) and cardiac structure and function in normal women through pregnancy and the postpartum. METHODS: In this prospective observational study, we obtained serial transthoracic echocardiograms, BNP, and NT-proBNP at seven intervals from 6 weeks' gestation through 12 months postpartum. Women with hypertension or cardiac disease were excluded. Using 6-12 months postpartum as reference for non-pregnant levels, echocardiogram measurements and BNP/NT-proBNP were compared over time using linear mixed models with Tukey-Kramer adjustment for multiple comparisons...
February 14, 2017: Journal of Perinatal Medicine
https://www.readbyqxmd.com/read/28186289/surgical-antegrade-transcatheter-mitral-valve-implantation-for-symptomatic-mitral-valve-disease-and-heavily-calcified-annulus
#6
Bettina Langhammer, Christoph Huber, Stephan Windecker, Thierry Carrel
No abstract text is available yet for this article.
February 1, 2017: European Journal of Cardio-thoracic Surgery
https://www.readbyqxmd.com/read/28170033/three-dimensional-assessment-of-mitral-valve-annulus-dynamics-and-impact-on-quantification-of-mitral-regurgitation
#7
Suzanne E van Wijngaarden, Vasileios Kamperidis, Madelien V Regeer, Meindert Palmen, Martin J Schalij, Robert J Klautz, Jeroen J Bax, Nina Ajmone Marsan, Victoria Delgado
No abstract text is available yet for this article.
February 7, 2017: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28168038/echocardiography-for-patients-undergoing-extracorporeal-cardiopulmonary-resuscitation-a-primer-for-intensive-care-physicians
#8
REVIEW
Zhongheng Zhang
Echocardiography is an invaluable tool in the management of patients with extracorporeal cardiopulmonary resuscitation (ECPR) and subsequent extracorporeal membrane oxygenation (ECMO) support and weaning. At the very beginning, echocardiography can identify the etiology of cardiac arrest, such as massive pulmonary embolism and cardiac tamponade. Eliminating these culprits saves life and may avoid the initiation of extracorporeal cardiopulmonary resuscitation. If the underlying causes are not identified or intrinsic to the heart (e...
2017: Journal of Intensive Care
https://www.readbyqxmd.com/read/28163437/pseudoaneurysm-of-the-left-atrium-following-infective-endocarditis
#9
Devi A Manuel, Bino John Sahayo, Viji Samuel Thomson, Jacob Jose
Transthoracic echocardiogram of a 3-year-old child showed a hypoechoic cavity in the posterior wall of the left atrium communicating with the left ventricle through an orifice in the mitral annulus, suggestive of pseudoaneurysm (Ps), probably the result of infective endocarditis. Three-dimensional echocardiography was helpful to confirm the diagnosis and assess the anatomical relationship of the Ps.
January 2017: Annals of Pediatric Cardiology
https://www.readbyqxmd.com/read/28149574/ischemic-mitral-valve-prolapse
#10
REVIEW
Francesco Nappi, Spadaccio Cristiano, Antonio Nenna, Massimo Chello
Ischemic mitral prolapse (IMP) is a pathologic entity encountered in about one-third among the patients undergoing surgery for ischemic mitral regurgitation (IMR). IMP is generally the result of a papillary muscle injury consequent to myocardial, but the recent literature is progressively unveiling a more complex pathogenesis. The mechanisms underlying its development regards the impairment of one or more components of the mitral apparatus, which comprises the annulus, the chordae tendineae, the papillary muscle and the left ventricular wall...
December 2016: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28140649/effects-of-a-combination-of-acepromazine-maleate-and-butorphanol-tartrate-on-conventional-and-two-dimensional-speckle-tracking-echocardiography-in-healthy-dogs
#11
Giorgia Santarelli, Jesús Talavera López, Josefa Fernández Del Palacio
OBJECTIVE To determine effects of a combination of acepromazine maleate and butorphanol tartrate on conventional echocardiographic variables and on strain values obtained by use of 2-D speckle tracking echocardiography (STE) in healthy dogs. ANIMALS 18 healthy medium- and large-size adult dogs. PROCEDURES Transthoracic echocardiographic examination (2-D, M-mode, color flow, spectral Doppler, and tissue Doppler ultrasonography) and high-definition oscillometric blood pressure measurement were performed before and after dogs were sedated by IM administration of a combination of acepromazine (0...
February 2017: American Journal of Veterinary Research
https://www.readbyqxmd.com/read/28137288/computer-based-comparison-of-different-methods-for-selecting-mitral-annuloplasty-ring-size
#12
Sameer Al-Maisary, Sandy Engelhardt, Bastian Graser, Ivo Wolf, Matthias Karck, Raffaele De Simone
BACKGROUND: Ring sizing for mitral valve annuloplasty is conventionally done intraoperatively using specific 'sizer' instruments, which are placed onto the valve tissue. This approach is barely reproducible since different sizing strategies have been established among surgeons. The goal of this study is to virtually apply different sizing methods on the basis of pre-repair echocardiography to find out basic differences between sizing strategies. METHODS: In three-dimensional echocardiographs of 43 patients, the mitral annulus and the contour of the anterior mitral leaflet were segmented using MITK Mitralyzer software...
January 30, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28130803/mitral-annular-motion-in-patients-after-transcatheter-mitraclip-and-mitral-valve-surgery
#13
Kentaro Toyama, Florian Rader, Kengo Ayabe, Saibal Kar, Alfredo Trento, Toshihiko Nishioka, Michele A De Robertis, Robert J Siegel
BACKGROUND: Longitudinal motion of the mitral annulus is an index that reflects left ventricular (LV) function. The aim of this study was to evaluate and compare the effects of transcatheter mitral valve (MV) repair and open heart surgery for mitral regurgitation (MR) on mitral annular motion (MAM). METHODS: We retrospectively analyzed in total 115 patients who underwent isolated transcatheter MV repair using MitraClip (n=50) or surgical MV interventions (n=65, 50 repairs and 15 replacements) for MR...
January 28, 2017: Echocardiography
https://www.readbyqxmd.com/read/28111804/spontaneous-rupture-of-a-caseous-calcification-of-the-mitral-annulus-in-a-hemodialysis-patient
#14
Azumi Hamasaki, Tetsuro Uchida, Mitsuaki Sadahiro
We report a 56-year-old hemodialysis patient with a spontaneously ruptured caseous calcification of the mitral annulus resulting in multiple cerebral emboli. The mass was resected without replacing the mitral valve. The patient has remained symptom-free 3.5 years following surgery.
February 2017: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/28110433/a-comprehensive-analysis-of-cardiac-valve-plane-displacement-in-healthy-adults-age-stratified-normal-values-by-cardiac-magnetic-resonance
#15
Marco M Ochs, Thomas Fritz, Florian André, Johannes Riffel, Derliz Mereles, Matthias Müller-Hennessen, Evangelos Giannitsis, Hugo A Katus, Matthias G Friedrich, Sebastian J Buss
Cardiac valve plane displacement (CVPD) reflects longitudinal LV function. The purpose of the present study was to determine regional heterogeneity of CVPD in healthy adults to provide normal values by cardiac magnetic resonance (CMR). We measured the anterior aortic plane systolic excursion (AAPSE); the anterior, anterolateral, inferolateral, inferior, and inferoseptal mitral annular plane systolic excursion (MAPSE); and the lateral tricuspid annulus plane systolic excursion (TAPSE). Systolic excursion was measured as the distance from peak end-diastolic to peak end-sysstolic annular position (peak-to-peak) in cine images acquired in 2-, 3- and 4-chamber views...
January 21, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28105997/first-successful-transcatheter-double-valve-replacement-from-a-transapical-access-and-nine-month-follow-up
#16
Robert Bauernschmitt, Stefan Bauer, Christian Liewald, Ramiz Emini, Wolfgang Oechsner, Meinrad Beer, Ralf Sodian, Andreas Liebold
AIMS: While TAVI is the treatment of choice in patients with aortic stenosis considered inoperable or at high risk, interventional replacement of the mitral valve is still in the preclinical or early clinical phase. Our aim was to report on the first transcatheter double valve replacement into native valves from a transapical access. METHODS AND RESULTS: A 67-year-old, highly symptomatic female patient considered inoperable due to severe calcification of the mitral annulus and comorbidities was scheduled for transcatheter double valve replacement by the local Heart Team...
January 20, 2017: EuroIntervention
https://www.readbyqxmd.com/read/28091872/impact-of-revascularization-of-coronary-chronic-total-occlusion-on-left-ventricular-function-and-electrical-stability-analysis-by-speckle-tracking-echocardiography-and-signal-averaged-electrocardiogram
#17
Yohei Sotomi, Atsunori Okamura, Katsuomi Iwakura, Motoo Date, Hiroyuki Nagai, Tomohiro Yamasaki, Yasushi Koyama, Koichi Inoue, Yasushi Sakata, Kenshi Fujii
The present study aimed to assess the mechanisms of effects of percutaneous coronary intervention (PCI) for chronic total occlusion (CTO) from two different aspects: left ventricular (LV) systolic function assessed by two-dimensional speckle tracking echocardiography (2D-STE) and electrical stability evaluated by late potential on signal-averaged electrocardiogram (SAECG). We conducted a prospective observational study with consecutive CTO-PCI patients. 2D-STE and SAECG were performed before PCI, and after 1-day and 3-months of procedure...
January 13, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28070866/finite-element-analysis-of-patient-specific-mitral-valve-with-mitral-regurgitation
#18
Thuy Pham, Fanwei Kong, Caitlin Martin, Qian Wang, Charles Primiano, Raymond McKay, John Elefteriades, Wei Sun
Functional mitral regurgitation (FMR) is a significant complication of left ventricular dysfunction and strongly associated with a poor prognosis. In this study, we developed a patient-specific finite element (FE) model of the mitral apparatus in a FMR patient which included: both leaflets with thickness, annulus, chordae tendineae, and chordae insertions on the leaflets and origins on the papillary muscles. The FE model incorporated human age- and gender-matched anisotropic hyperelastic material properties, and MV closure at systole was simulated...
January 9, 2017: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/28063137/caseous-calcification-of-the-mitral-annulus-not-always-a-benign-condition
#19
Jerrold Spapen, Benjamin Scott
No abstract text is available yet for this article.
January 6, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28045338/systolic-mitral-annulus-velocity-is-a-sensitive-index-for-changes-in-left-ventricular-systolic-function-during-inotropic-therapy-in-patients-with-acute-heart-failure
#20
Trygve Husebye, Jan Eritsland, Reidar Bjørnerheim, Geir Ø Andersen
BACKGROUND: Echocardiography is recommended for assessment of left ventricular systolic function in patients with acute heart failure but few randomised trials have validated techniques like tissue Doppler (TDI) and speckle tracking (STE) in patients with acute heart failure following ST-elevation myocardial infarction. METHODS: This was a substudy from the LEAF (LEvosimendan in Acute heart Failure following myocardial infarction) trial (NCT00324766 ), which randomised 61 patients developing acute heart failure, including cardiogenic shock, within 48 hours after ST-elevation myocardial infarction, double-blind to a 25-hour infusion of levosimendan or placebo...
January 1, 2017: European Heart Journal. Acute Cardiovascular Care
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