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https://www.readbyqxmd.com/read/28734454/patient-specific-ventricular-access-site-selection-for-the-neochord-mitral-valve-repair-procedure
#1
Andrea Colli, Eleonora Bizzotto, Erica Manzan, Laura Besola, Nicola Pradegan, Roberto Bellu, Demetrio Pittarello, Gino Gerosa
Selecting the ventricular access site on the basis of mitral valve anatomy improves the outcomes for a subgroup of patients undergoing the transapical echocardiographically guided NeoChord (NeoChord, Inc, St. Louis Park, MN) repair procedure to correct mitral regurgitation and who have a leaflet-to-annulus index lower than the recommended efficacy threshold of 1.25.
August 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28728784/mitral-annuloplasty-ring-suture-forces-impact-of-surgeon-ring-and-use-conditions
#2
Eric L Pierce, Charles H Bloodworth, Andrew W Siefert, Thomas F Easley, Tetsushi Takayama, Tomonori Kawamura, Robert C Gorman, Joseph H Gorman, Ajit P Yoganathan
OBJECTIVE: The study objective was to quantify the effect of ring type, ring-annulus sizing, suture position, and surgeon on the forces required to tie down and constrain a mitral annuloplasty ring to a beating heart. METHODS: Physio (Edwards Lifesciences, Irvine, Calif) or Profile 3D (Medtronic, Dublin, Ireland) annuloplasty rings were instrumented with suture force transducers and implanted in ovine subjects (N = 23). Tie-down forces and cyclic contractile forces were recorded and analyzed at 10 suture positions and at 3 levels of increasing peak left ventricular pressure...
June 21, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28721493/modelling-of-lesions-associated-with-functional-mitral-regurgitation-in-an-ex-vivo-platform
#3
Michal Jaworek, Federico Lucherini, Claudia Romagnoni, Guido Gelpi, Monica Contino, Paolo Romitelli, Carlo Antona, Gianfranco B Fiore, Riccardo Vismara
Functional mitral regurgitation (FMR) is a complex pathology involving valvular and subvalvular structures reconfiguration, and its treatment is considered challenging. There is a lack of experimental models allowing for reliable preclinical FMR treatments' evaluation in a realistic setting. A novel approach to simulate FMR was developed and incorporated into an ex vivo passive beating heart platform. FMR was obtained by dilating the mitral annulus (MA) mainly in the antero-posterior direction and displacing the papillary muscles (PMs) apically and laterally by ad hoc designed and 3D printed dilation and displacing devices...
July 18, 2017: Annals of Biomedical Engineering
https://www.readbyqxmd.com/read/28708196/assessment-of-mitral-apparatus-in-patients-with-acute-inferoposterior-myocardial-infarction-and-ischaemic-mitral-regurgitation-with-two-dimensional-echocardiography-from-anatomically-correct-imaging-planes
#4
Karolina Mėlinytė, Živile Valuckiene, Renaldas Jurkevičius
BACKGROUND: Ischaemic mitral regurgitation (IMR) is associated with adverse prognosis after myocardial infarction (MI) as a result of left ventricular remodelling and geometric deformation of the mitral apparatus (MA). AIM: The aim of this study was to assess MA from anatomically correct imaging planes in acute inferoposterior MI and IMR. METHODS: Ninety-three patients with no structural cardiac valve abnormalities and the first acute inferoposterior MI were prospectively enrolled into the study...
2017: Kardiologia Polska
https://www.readbyqxmd.com/read/28697033/ventricular-perforation-during-open-surgical-balloon-expandable-mitral-valve-replacement-a-case-report
#5
Yousef M Hamdeh, Jordan E Goldhammer, Nicholas J Ruggiero, John W Entwistle
A 79-year-old woman with severe mitral annular calcification was scheduled for mitral valve replacement. A SAPIEN 3 valve was implanted in mitral position using an open surgical approach. Immediately after cardiopulmonary bypass, bleeding from an unidentified source was encountered. Cardiopulmonary bypass was emergently resumed and a laceration of the left ventricular apex due to the valve delivery system was detected. Risk factors specific to the open surgical approach include a decompressed ventricle, decreased annulus to apical distance, and the absence of continuous fluoroscopic and echocardiographic imaging...
July 10, 2017: A & A Case Reports
https://www.readbyqxmd.com/read/28676926/the-infant-with-aortic-arch-hypoplasia-and-small-left-heart-structures-echocardiographic-indices-of-mitral-and-aortic-hypoplasia-predicting-successful-biventricular-repair
#6
Jennifer M Plymale, Peter C Frommelt, Melodee Nugent, Pippa Simpson, James S Tweddell, Amanda J Shillingford
In infants with aortic arch hypoplasia and small left-sided cardiac structures, successful biventricular repair is dependent on the adequacy of the left-sided structures. Defining accurate thresholds of echocardiographic indices predictive of successful biventricular repair is paramount to achieving optimal outcomes. We sought to identify pre-operative echocardiographic indices of left heart size that predict intervention-free survival in infants with small left heart structures undergoing primary aortic arch repair to establish biventricular circulation (BVC)...
July 4, 2017: Pediatric Cardiology
https://www.readbyqxmd.com/read/28669136/left-ventricular-diverticulum-mimicking-cardiac-tumor
#7
Maciej T Wybraniec, Wojciech Wróbel, Jarosław Myszor, Katarzyna Mizia-Stec
Left ventricular (LV) diverticulum represents a rare and frequently asymptomatic congenital anomaly, which is incidentally discovered during routine transthoracic echocardiography. We present a case of a 66-year-old female patient who was admitted to the cardiology department due to incidental finding of a tumor-like mass associated with the posterior mitral leaflet. Preliminary echocardiographic evaluation revealed a solid structure, suspected of mitral annulus calcification or LV malignancy. However, cardiac contrast-enhanced computed tomography confirmed the presence of LV diverticulum, partially filled with calcified thrombus...
July 2, 2017: Echocardiography
https://www.readbyqxmd.com/read/28665712/left-ventricular-end-diastole-hemodynamics-is-strongly-associated-with-spontaneous-cardiac-baroreflex-in-humans
#8
Karol Makowski, Elżbieta Kramarz, Grzegorz Kamiński, Monika Grzęda, Paulina Kramarz, Grzegorz Kade
BACKGROUND: In animals, hemodynamic conditions during left ventricular (LV) end-diastole are crucial for the excitation of autonomic afferents distributed throughout cardiac chambers and large thoracic vessels. The objective of the study was to select the echocardiographic indices of LV diastolic function that are the most potent predictors of the heart's spontaneous baroreflex in humans. METHODS: In 47 untreated hypertensive patients (26 with normal and 21 with increased left atrium diameter) and 24 healthy controls, baroreflex sensitivity (BRS) was assessed in the low (αLF; 0...
June 30, 2017: Clinical and Experimental Hypertension: CHE
https://www.readbyqxmd.com/read/28656784/the-spectrum-of-mitral-valve-pathologies-relevance-for-surgical-and-structural-interventions
#9
Sho Torii, Maria E Romero, Hiroyoshi Mori, Emanuel Harari, Frank D Kolodgie, Aloke V Finn, Renu Virmani
The mitral valve apparatus, both functionally and morphologically is composed of a constellation of individual structures, including the annulus, anterior and posterior leaflets, chordae tendineae, and papillary muscles. Most also include the left ventricular wall and the left atrium which are essential for the valve to function normally. Areas covered: The commonest conditions responsible for mitral valve dysfunction in the Western World are degenerative and functional mitral regurgitation, which are discussed in detail...
July 4, 2017: Expert Review of Cardiovascular Therapy
https://www.readbyqxmd.com/read/28638016/-atrioventricular-junction-reconstruction-in-severe-calcification-of-mitral-fibrous-annulus
#10
A I Katkov, Yu V Belov, R N Komarov, P V Lednev
No abstract text is available yet for this article.
2017: Khirurgiia
https://www.readbyqxmd.com/read/28623932/impact-of-glycemic-control-on-aortic-stiffness-left-ventricular-mass-and-diastolic-longitudinal-function-in-type-2-diabetes-mellitus
#11
Michaela Kozakova, Carmela Morizzo, Alan G Fraser, Carlo Palombo
BACKGROUND: Poor glycemic control is associated with impaired left ventricular (LV) diastolic function in patients with type 2 diabetes mellitus (T2DM). Inappropriate LV mass increase and accelerated aortic stiffening were suggested to participate on deterioration of diastolic function. The present study investigated the inter-relationships between glycemic control, early diastolic and systolic longitudinal velocity of mitral annulus, LV mass and aortic stiffness in T2DM patients free of cardiovascular disease and with preserved LV ejection fraction, and compared them with those observed in healthy volunteers of similar age and sex distribution...
June 17, 2017: Cardiovascular Diabetology
https://www.readbyqxmd.com/read/28606165/pitfalls-in-tamvi-experience-with-the-repositionable-lotus%C3%A2-valve-system
#12
Paul P Heinisch, Fabien Praz, Bernhard Winkler, Stephan Windecker, Christoph Huber, Thierry Carrel
BACKGROUND: Simultaneous transapical implantation of transcatheter heart valves in the native mitral and aortic position may be considered as an alternative to surgical valve replacement in high-risk patients presenting with combined valve disease. CASE PRESENTATION: A 59-year-old female with severe aortic stenosis, severe mitral stenosis with mild mitral insufficiency, persistent atrial fibrillation, severe chronic obstructive pulmonary disease and NYHA class of IV was evaluated by our interdisciplinary heart team...
June 12, 2017: Journal of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28592041/-the-effects-of-different-tidal-volume-ventilation-on-right-ventricular-function-in-critical-respiratory-failure-patients
#13
L X Liu, J Q Wu, Q Y Wu, Q Zhang, B Yu, S M Ge, Y Huo, X T Wang, Y G Chao, Z J Hu
Objective: To observe and explore the effects of different tidal volume (VT) ventilation on right ventricular (RV) function in patients with critical respiratory failure. Methods: Consecutive respiratory failure patients who were treated with invasive ventilator over 24 h in the Department of Critical Care Medicine at the Fourth Hospital of Hebei Medical University from June to December in 2015 were enrolled in this study.Clinical data including patients' vital signs, ventilator parameters and RV echocardiography were collected within 6 h (D0), day1(D1), day2 (D2) and day3 (D3) after ventilation started...
June 1, 2017: Zhonghua Nei Ke za Zhi [Chinese Journal of Internal Medicine]
https://www.readbyqxmd.com/read/28579307/tricuspid-annular-plane-systolic-excursion-in-dogs-with-myxomatous-mitral-valve-disease-with-and-without-pulmonary-hypertension
#14
H Poser, M Berlanda, M Monacolli, B Contiero, A Coltro, C Guglielmini
OBJECTIVES: To evaluate tricuspid annular plane systolic excursion (TAPSE) in dogs with myxomatous mitral valve disease (MMVD) with or without pulmonary hypertension (PH) and to study the correlations with clinical and echocardiographic parameters. ANIMALS: The study population included 99 dogs with MMVD and tricuspid regurgitation. METHODS: This is a prospective clinical study. All dogs received a transthoracic echocardiographic evaluation, including 2D, M-mode, echo-Doppler, and tissue Doppler measurements...
June 2017: Journal of Veterinary Cardiology: the Official Journal of the European Society of Veterinary Cardiology
https://www.readbyqxmd.com/read/28562831/three-dimensional-volumetric-assessment-of-diastolic-function-by-cardiac-magnetic-resonance-imaging-the-multi-ethnic-study-of-atherosclerosis-mesa
#15
Marcelo S Nacif, Andre L C Almeida, Alistair A Young, Brett R Cowan, Anderson C Armstrong, Eunice Yang, Christopher T Sibley, W Gregory Hundley, Songtao Liu, Joao Ac Lima, David A Bluemke
Background: Cardiac Magnetic Resonance is in need of a simple and robust method for diastolic function assessment that can be done with routine protocol sequences. Objective: To develop and validate a three-dimensional (3D) model-based volumetric assessment of diastolic function using cardiac magnetic resonance (CMR) imaging and compare the results obtained with the model with those obtained by echocardiography. Methods: The study participants provided written informed consent and were included if having undergone both echocardiography and cine steady-state free precession (SSFP) CMR on the same day...
2017: Arquivos Brasileiros de Cardiologia
https://www.readbyqxmd.com/read/28556391/cardiac-myxoma-a-rare-case-series-of-3-patients-and-a-literature-review
#16
Haiyan Wang, Quan Li, Minghua Xue, Pengzhan Zhao, Jing Cui
Myxoma is the most common tumor in the heart. A typical myxoma is relatively straightforward to diagnose. However, certain cardiac myxomas have rare features. We report three extremely rare cases of cardiac myxoma. One case involved a myxoma that originated from the annulus of the tricuspid after valvuloplasty, one case involved myxomas associated with left atrial thrombus and severe mitral stenosis, and the third case involved myxoma combined with severe calcification. All three cases were diagnosed by echocardiography and pathology...
May 27, 2017: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/28548471/recurrent-mitral-paravalvular-leak-benefits-of-leak-site-repair-compared-to-re-replacement
#17
Jae-Woong Choi, Ho Y Hwang, Kyung H Kim, Ki-Bong Kim, Hyuk Ahn
BACKGROUND: Mitral paravalvular leak (PVL) recurrence after surgical correction has not yet been well demonstrated. The aims of this study were (1) to evaluate the long-term results of surgical mitral PVL correction, including recurrent PVL, and (2) to elucidate the factors including surgical technique that affect the risk of recurrent PVL. METHODS: Eighty-six patients who underwent surgical treatment for mitral PVL were enrolled in this study. Thirty-six patients underwent leak site repair (MVP group), and 50 patients underwent re-replacement (MVR group)...
May 26, 2017: Journal of Cardiovascular Surgery
https://www.readbyqxmd.com/read/28540065/dynamic-and-quantitative-evaluation-of-degenerative-mitral-valve-disease-a-dedicated-framework-based-on-cardiac-magnetic-resonance-imaging
#18
Francesco Sturla, Francesco Onorati, Giovanni Puppini, Omar A Pappalardo, Matteo Selmi, Emiliano Votta, Giuseppe Faggian, Alberto Redaelli
BACKGROUND: Accurate quantification of mitral valve (MV) morphology and dynamic behavior over the cardiac cycle is crucial to understand the mechanisms of degenerative MV dysfunction and to guide the surgical intervention. Cardiac magnetic resonance (CMR) imaging has progressively been adopted to evaluate MV pathophysiology, although a dedicated framework is required to perform a quantitative assessment of the functional MV anatomy. METHODS: We investigated MV dynamic behavior in subjects with normal MV anatomy (n=10) and patients referred to surgery due to degenerative MV prolapse, classified as fibro-elastic deficiency (FED, n=9) and Barlow's disease (BD, n=10)...
April 2017: Journal of Thoracic Disease
https://www.readbyqxmd.com/read/28537419/repair-of-a-submitral-aneurysm-with-associated-left-atrial-wall-dissection
#19
Deep Chandh Raja, Vijayanand Palanisamy, Kumar Chidambaram, Ulhas Pandurangi, Ajit Sankardas Mullasari, Rajan Sethuratnam
We describe a case of submitral aneurysm in a 40-year-old man, which was distinctive in its anatomy and pathophysiology. The patient had a congenital submitral aneurysm located in the anterolateral part of the mitral annulus, complicated by dissection of the left atrial wall, severe mitral regurgitation, and compression of the left circumflex artery. He was managed successfully with aid of a comprehensive preoperative evaluation with all available imaging guidance and methodical surgical techniques, resulting in exclusion of the aneurysm, mitral valve replacement, and a graft to the left circumflex artery...
January 1, 2017: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/28528875/comparison-of-central-and-peripheral-hemodynamics-in-association-with-left-ventricular-diastolic-dysfunction-in-the-community-based-elderly-chinese
#20
Jing Xiong, Xuejing Yu, Shikai Yu, Bin Bai, Henry Xu, Hongwei Ji, Jiadela Teliewubai, Kai Wang, Chen Chi, Yuyan Lu, Yiwu Zhou, Ximin Fan, Jue Li, Yi Zhang, Yawei Xu
The aim of the study was to investigate the association of left ventricular diastolic dysfunction (LVDD) with central and peripheral hemodynamics. A total of 1599 community-based senior residents (aged ≥ 65 years) in northern Shanghai, China, were recruited as of August 2015. Echocardiography was performed for each participant using the MyLab30 Gold CV system. According to the recommendations from the American Society of Echocardiography, the ratio of E (peak early diastolic transmitral flow velocity) to E' (early diastolic lateral mitral annulus velocity) was assessed for the evaluation of LVDD...
April 27, 2017: Journal of the American Society of Hypertension: JASH
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