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mitral valve gradients

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https://www.readbyqxmd.com/read/28549026/the-use-of-rapid-deployment-valves-in-combined-aortic-and-mitral-valve-surgery-one-year-clinical-and-echocardiographic-outcomes
#1
Markus Schlömicher, Matthias Bechtel, Zulfugar Taghiyev, Yazan Al-Jabery, Peter Lukas Haldenwang, Vadim Moustafine, Justus Thomas Strauch
OBJECTIVE: Patients undergoing multiple valve surgery represent a high-risk group who could potentially benefit from a reduction of cross-clamp and cardiopulmonary bypass times because prolonged bypass and cross-clamp times are considered independent risk factors for increased morbidity and mortality after cardiac surgery. METHODS: Between July 2013 and November 2014, 16 patients underwent rapid deployment aortic valve replacement with the EDWARDS INTUITY valve system in the setting of concomitant mitral disease...
May 25, 2017: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/28532769/mitral-valve-repair-for-pure-mitral-regurgitation-followed-years-later-by-mitral-valve-replacement-for-mitral-stenosis
#2
Tiffany M Becker, Paul A Grayburn, William C Roberts
We describe herein 2 patients who developed severe mitral stenosis (MS) approximately two decades after a mitral valve repair operation for pure mitral regurgitation (MR) secondary to mitral valve prolapse. This report's purpose is to point out that use of a circumferential mitral annular ring during the repair has the potential to produce a transmitral pressure gradient just like that occurring after mitral valve replacement utilizing a mechanical prosthesis or a bioprosthesis in the mitral position.
April 12, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28506459/increased-mitral-gradient-after-transcatheter-aortic-valve-replacement-is-it-anatomic-mitral-valve-obstruction-or-related-to-hemodynamics
#3
Michael Essandoh, Jonathan Tang, Leonid Gorelik
No abstract text is available yet for this article.
February 13, 2017: Journal of Cardiothoracic and Vascular Anesthesia
https://www.readbyqxmd.com/read/28483264/transcatheter-aortic-valve-insertion-after-previous-mitral-valve-operation
#4
Kevin L Greason, Gurpreet S Sandhu, Vuyisile T Nkomo, Katherine S King, David L Joyce, Eric E Williamson, David R Holmes
OBJECTIVE: There are limited data on transcatheter aortic valve insertion after previous mitral valve operation. To better understand the associated procedural risks, we reviewed our single-center experience. METHODS: We retrospectively reviewed the records of 772 consecutive patients who received transcatheter aortic valve insertion from November 2008 through August 2016. There were 18 (2%) patients who had previous mitral valve operation that included valve repair in 4 patients (22%) and replacement in 14 (78%)...
April 4, 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28473215/management-of-nonagenarian-patients-with-severe-aortic-stenosis-the-role-of-comorbidity
#5
Eva Bernal, Albert Ariza-Solé, Antoni Bayés-Genís, Francesc Formiga, Pablo Díez-Villanueva, Rafael Romaguera, Hugo González-Saldívar, Manuel Martínez-Sellés
BACKGROUND: The number of nonagenarian patients with aortic stenosis will likely increase due to the ageing population. We assessed the clinical characteristics, management, and outcomes of nonagenarian patients with severe aortic stenosis. METHODS: A total of 177 (117 females and 60 males) consecutive nonagenarian patients from two large contemporary registries were included in this study. Clinical characteristics, comorbidity as assessed by the Charlson Index, clinical management, and outcomes were recorded...
April 12, 2017: Heart, Lung & Circulation
https://www.readbyqxmd.com/read/28473128/transcatheter-aortic-valve-implantation-within-degenerated-aortic-surgical-bioprostheses-partner-2-valve-in-valve-registry
#6
John G Webb, Michael J Mack, Jonathon M White, Danny Dvir, Philipp Blanke, Howard C Herrmann, Jonathon Leipsic, Susheel K Kodali, Raj Makkar, D Craig Miller, Philippe Pibarot, Augusto Pichard, Lowell F Satler, Lars Svensson, Maria C Alu, Rakesh M Suri, Martin B Leon
BACKGROUND: Early experience with transcatheter aortic valve replacement (TAVR) within failed bioprosthetic surgical aortic valves has shown that valve-in-valve (VIV) TAVR is a feasible therapeutic option with acceptable acute procedural results. OBJECTIVES: The authors examined 30-day and 1-year outcomes in a large cohort of high-risk patients undergoing VIV TAVR. METHODS: Patients with symptomatic degeneration of surgical aortic bioprostheses at high risk (≥50% major morbidity or mortality) for reoperative surgery were prospectively enrolled in the multicenter PARTNER (Placement of Aortic Transcatheter Valves) 2 VIV trial and continued access registries...
May 9, 2017: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/28473116/elevated-mitral-valve-pressure-gradient-after-mitraclip-implantation-deteriorates-long-term-outcome-in-patients-with-severe-mitral-regurgitation-and-severe%C3%A2-heart-failure
#7
Michael Neuss, Thomas Schau, Akihiro Isotani, Markus Pilz, Maren Schöpp, Christian Butter
OBJECTIVES: This single-center study was performed to analyze the effect of an increased transvalvular gradient after the MitraClip (MC) (Abbott Laboratories, Abbott Park, Illinois) procedure on patient outcome during follow-up. BACKGROUND: Percutaneous transcatheter repair of the mitral valve with the MC device has been established as a novel technique for patients with severe mitral regurgitation and high surgical risk. This study investigated the influence of an increased pressure gradient after MC implantation on the long-term outcome of patients...
May 8, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28470915/comparison-of-fast-acquisition-strategies-in-whole-heart-four-dimensional-flow-cardiac-mr-two-center-1-5-tesla-phantom-and-in-vivo-validation-study
#8
Pankaj Garg, Jos J M Westenberg, Pieter J van den Boogaard, Peter P Swoboda, Rahoz Aziz, James R J Foley, Graham J Fent, F G J Tyl, L Coratella, Mohammed S M ElBaz, R J van der Geest, David M Higgins, John P Greenwood, Sven Plein
PURPOSE: To validate three widely-used acceleration methods in four-dimensional (4D) flow cardiac MR; segmented 4D-spoiled-gradient-echo (4D-SPGR), 4D-echo-planar-imaging (4D-EPI), and 4D-k-t Broad-use Linear Acquisition Speed-up Technique (4D-k-t BLAST). MATERIALS AND METHODS: Acceleration methods were investigated in static/pulsatile phantoms and 25 volunteers on 1.5 Tesla MR systems. In phantoms, flow was quantified by 2D phase-contrast (PC), the three 4D flow methods and the time-beaker flow measurements...
May 4, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28451038/-myxoma-involving-posterolateral-leaflet-about-a-case
#9
Fouad Nya, Abdessamad Abdou, Mehdi Bamous, Younes Moutakiallah, Noureddine Atmani, Aniss Seghrouchni, Mahdi Aithoussa, Abdellatif Boulahya
Cardiac myxomas are the most common type of primary cardiac tumors. They mainly affect the interatrial septum and exceptionally the heart valves. Surgical excision remains the only therapeutic alternative. We here report the case of a 69-year old patient with no significant pathological history suffering from NYHA class II-III dyspnea associated with lipothymia. Transthoracic echocardiography showed a tight calcified aortic narrowing with aortic valve gradient of 58 mmHg. A sessile mass of 15mm diameter inserted into the posterolateral leaflet, without stenosis or mitral regurgitation evoking an atypical localization of myxomaor or fibroelastoma was detected at the level of the mitral valve...
2017: Pan African Medical Journal
https://www.readbyqxmd.com/read/28427597/intentional-percutaneous-laceration-of%C3%A2-the%C3%A2-anterior-mitral-leaflet-to-prevent%C3%A2-outflow%C3%A2-obstruction-during-transcatheter-mitral-valve-replacement-first-in-human%C3%A2-experience
#10
Vasilis C Babaliaros, Adam B Greenbaum, Jaffar M Khan, Toby Rogers, Dee Dee Wang, Marvin H Eng, William W O'Neill, Gaetano Paone, Vinod H Thourani, Stamatios Lerakis, Dennis W Kim, Marcus Y Chen, Robert J Lederman
OBJECTIVES: This study sought to use a new catheter technique to split the anterior mitral valve leaflet (AML) and prevent iatrogenic left ventricular outflow tract (LVOT) obstruction immediately before transcatheter mitral valve replacement (TMVR). BACKGROUND: LVOT obstruction is a life-threatening complication of TMVR, caused by septal displacement of the AML. METHODS: The procedure was used in patients with severe mitral valve disease and prohibitive surgical risk...
April 24, 2017: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/28415120/p1088match-and-mismatch-between-opening-area-and-resistance-in-mild-and-moderate-rheumatic-mitral-stenosis
#11
I El-Dosouky
Background: Mitral valve resistance (MVR) is a hemodynamic consequence of mitral stenosis but it has no clear threshold and it has a shortage of data to be reliable. Purpose: is to investigate match and mismatch between opening area and resistance especially in patients with moderate and mild mitral stenosis. Materials: This cross section case control study comprised 88 patients with moderate and mild rheumatic mitral stenosis. Transthorathic echocardiographic study estimated: mitral valve area (MVA) both by planimerty (2D) and pressure half time (PHT), mitral valve score (MVS), mean transmitral pressure gradient (MPG), diastolic filling time(DFT), left ventricular out flow tract diameter (LVOTd) and velocity time integral (LVOT vti) , the MVR was calculated as: MPG/aortic flow ratio [(LVOTd) (LVOTvti)/ DFT] in dynes...
December 1, 2016: European Heart Journal Cardiovascular Imaging
https://www.readbyqxmd.com/read/28391581/contribution-of-mitral-valve-leaflet-length-and-septal-wall-thickness-to-outflow-tract-obstruction-in-patients-with-hypertrophic-cardiomyopathy
#12
Kareem Morant, Yoko Mikami, Immaculate Nevis, David McCarty, John Stirrat, David Scholl, Martin Rajchl, Peter Giannoccaro, Louis Kolman, Bobby Heydari, Carmen Lydell, Andrew Howarth, Andrew Grant, James A White
We sought to examine whether elongation of the mitral valve leaflets in patients with hypertrophic cardiomyopathy (HCM) is synergistic to septal wall thickness (SWT) in the development of left ventricular outflow tract obstruction (LVOTO). HCM is a common genetic cardiac disease characterized by asymmetric septal hypertrophy and predisposition towards LVOTO. It has been reported that elongation of the mitral valve leaflets may be a primary phenotypic feature and contribute to LVOTO. However, the relative contribution of this finding versus SWT has not been studied...
April 8, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28384909/immediate-outcome-of-balloon-mitral-valvuloplasty-with-jomiva-balloon-during-pregnancy
#13
Shanmuga Sundaram Rathakrisnnan, Ramona Ramasamy, Tamilarasu Kaliappan, Rajendiran Gopalan, Ramasmy Palanimuthu, Premkrishna Anandhan
INTRODUCTION: Rheumatic mitral stenosis is the most common Valvular Heart Disease encountered during pregnancy. Balloon Mitral Valvuloplasty (BMV) is one of the treatment option available if the symptoms are refractory to the medical management and the valve anatomy is suitable for balloon dilatation. BMV with Inoue balloon is the most common technique being followed worldwide. Over the wire BMV is a modified technique using Joseph Mitral Valvuloplasty (JOMIVA) balloon catheter which is being followed in certain centres...
February 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28344613/anp-and-bnp-plasma-levels-in-patients-with-rheumatic-mitral-stenosis-after-percutaneous-balloon-mitral-valvuloplasty
#14
Łukasz Mazurkiewicz, Witold Rużyłło, Zbigniew Chmielak, Ewa Opalińska-Ciszek, Jadwiga Janas, Piotr Hoffman, Tomasz Hryniewiecki, Jacek Grzybowski
INTRODUCTION: Atrial (ANP) and B-type (BNP) natriuretic peptides are hormones secreted by the heart as a response to volume expansion and pressure overload. AIM: To assess the changes of ANP and BNP after percutaneous balloon mitral valvuloplasty (PBMV) and to investigate factors associated with endpoints. MATERIAL AND METHODS: The study included 96 patients (90.7% females, age 51.6 ±12.2 years) with rheumatic mitral valve stenosis (mitral valve area (MVA) 1...
2017: Postępy W Kardiologii Interwencyjnej, Advances in Interventional Cardiology
https://www.readbyqxmd.com/read/28342542/determinants-of-late-tricuspid-regurgitation-after-aortic-mitral-double-valve-replacement
#15
Dong Seop Jeong, Pyo Won Park, Kiick Sung, Wook Sung Kim, Young Tak Lee
The aims of this study are to evaluate the long-term outcomes of double valve replacement (aortic and mitral valves) and to investigate the determinants of late tricuspid regurgitation (TR). A total of 239 consecutive patients who underwent double valve replacement were enrolled. Valve pathology was rheumatic in 86.6% (207/239) and degenerative in 13.4% (32/239) of patients. Among these patients, 116 patients underwent concomitant tricuspid annuloplasty, and follow-up was completed for all 239 patients (mean = 7...
March 1, 2017: American Journal of Cardiology
https://www.readbyqxmd.com/read/28332088/simple-technique-of-repair-for-barlow-syndrome-with-posterior-resection-and-chordal-transfer-via-minimally-invasive-approach-primary-experience-in-a-consecutive-series-of-22-patients
#16
H Kamiya, Payam Akhyari, J-P Minol, A C Ites, T Weinreich, S Sixt, P Rellecke, U Boeken, A Albert, A Lichtenberg
OBJECTIVE: Current techniques for mitral valve repair (MVR) in Barlow's disease require high level of surgical expertise due to a complex anatomy. A novel and simple standardized technique that particularly considers the pathological changes of the mitral valve in Barlow's disease has been developed. METHODS: Between 2009 and 2013, 22 patients underwent minimally invasive MVR for Barlow's disease and severe mitral regurgitation (MR). A simple, standardized technique was applied, including resection of P2 segment of posterior mitral leaflet (PML) with preservation of the shortest chordae, transfer of the preserved chordae to A2, and implantation of a semi-rigid open ring...
March 22, 2017: General Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28329271/short-and-long-term-results-after-prosthetic-mitral-valve-implantation-in-patients-with-severe-mitral-annulus-calcification%C3%A2
#17
Ronny Ben-Avi, Boris Orlov, Leonid Sternik, Alexander Kogan, Rafael Kuperstien, Amjad Shalabi, Eilon Ram, Alexander Lipey, Ehud Raanani
OBJECTIVES: To investigate short- and long-term outcomes of a conservative decalcification approach in mitral valve replacement (MVR) surgery in the presence of mitral annulus calcification (MAC). METHODS: Of the 1038 patients who underwent MVR, 133 (13%) had significant MAC with at least 30% of the annular circumference heavily calcified. In most patients, the surgical approach to MAC included conservative decalcification, supra-annular prosthesis implantation and insertion of a pericardial patch between the MV annulus and the prosthesis...
June 1, 2017: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/28314622/diastolic-function-and-transcatheter-aortic-valve-replacement
#18
John E A Blair, Prashant Atri, Julie L Friedman, James D Thomas, Kent Brummel, Ranya N Sweis, Issam Mikati, S Chris Malaisrie, Charles J Davidson, James D Flaherty
BACKGROUND: Little is known about baseline diastolic dysfunction and changes in diastolic dysfunction grade after transcatheter aortic valve replacement (TAVR) for aortic stenosis (AS) and its impact on overall outcomes. The aim of this study was to describe baseline diastolic dysfunction and changes in diastolic dysfunction grade that occur with TAVR and their relationship to mortality and rehospitalization. METHODS: This was a single-center study evaluating all TAVRs from January 2012 to June 2014...
March 14, 2017: Journal of the American Society of Echocardiography
https://www.readbyqxmd.com/read/28302715/late-thrombosis-of-a-mitral-bioprosthetic-valve-with-associated-massive-left-atrial-thrombus
#19
Preetham Muskula, Rigoberto Ramirez, A Michael Borkon, Michael L Main
An 84-year-old man presented 5 years following bioprosthetic mitral valve replacement with three months of worsening dyspnea on exertion. A new mitral stenosis murmur was noted on physical examination, and an electrocardiogram revealed newly recognized atrial fibrillation. Severe mitral stenosis (mean gradient = 13 mmHg) was confirmed by transthoracic echocardiography. Transesophageal echocardiography revealed markedly thickened mitral bioprosthetic leaflets with limited mobility, and a massive left atrial thrombus (> 4 cm in diameter) (see Figures 1A-D, and video files 1-4)...
March 16, 2017: Echo Research and Practice
https://www.readbyqxmd.com/read/28296135/assessment-of-trans-aortic-pressure-gradient-using-a-coronary-pressure-wire-in-patients-with-mechanical-aortic-and-mitral-valve-prostheses
#20
Nisharahmed Kherada, Juan Carlos Brenes, Annapoorna S Kini, George D Dangas
Accurate evaluation of trans-aortic valvular pressure gradients is challenging in cases where dual mechanical aortic and mitral valve prostheses are present. Non-invasive Doppler echocardiographic imaging has its limitations due to multiple geometric assumptions. Invasive measurement of trans-valvular gradients with cardiac catheterization can provide further information in patients with two mechanical valves, where simultaneous pressure measurements in the left ventricle and ascending aorta must be obtained...
March 15, 2017: Catheterization and Cardiovascular Interventions
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