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https://www.readbyqxmd.com/read/28038944/numerical-simulation-of-mitral-valve-prolapse-considering-the-effect-of-left-ventricle
#1
Seyedvahid Khodaei, Nasser Fatouraee, Malikeh Nabaei
Heart failure is one of the most important issues that has been investigated in recent research studies. Variations that occur in apparatus of mitral valve, such as chordae tendineaea rupture, can affect the valve function during ventricular contraction and lead to regurgitation from the left ventricle into the left atrium. One method for understanding mitral valve function in such conditions is computational analysis. In this paper, we develop a finite element model of mitral valve prolapse, considering the direct effect of left ventricular motion on blood flow interacting with the mitral valve...
December 28, 2016: Mathematical Biosciences
https://www.readbyqxmd.com/read/28031650/endovascular-repair-of-bilateral-internal-mammary-artery-aneurysms-in-a-patient-with-marfan-syndrome-a-case-report
#2
Hazem Alhawasli, Amir Darki, Bruce E Lewis
Marfan syndrome (MFS) is an autosomal dominant condition that is caused by abnormal synthesis of connective tissue. The syndrome classically affects the ocular, musculoskeletal, and cardiovascular systems. The most common cardiovascular manifestations include mitral valve prolapse/regurgitation and aortic aneurysms at high risk of rupture and dissection. However, internal mammary artery (IMA) true aneurysms are rarely reported. In this case report, we describe a 43-year-old male patient with MFS and three previous thoracotomies referred for endovascular repair of bilateral IMA true aneurysms...
December 2016: International Journal of Angiology: Official Publication of the International College of Angiology, Inc
https://www.readbyqxmd.com/read/28009965/chordal-shortening-for-anterior-mitral-leaflet-prolapse-and-the-maze-procedure-for-persistent-atrial-fibrillation
#3
Jong Hun Kim, Kyung Hwa Kim, Jong Bum Choi, Ja Hong Kuh
Letter to the Editor We read with great interest the report by Inoue et al. (Cusp-level chordal shortening for non-rheumatic mitralanterior leaflet prolapse in a patient with persistent atrial fibrillation. J Heart Valve Dis 2015;24:586-589) that described their mitral valve repair technique for anterior leaflet prolapse (ALP) and perioperative adaptive servo-ventilation (ASV) therapy for preventing the recurrence of atrial fibrillation after the maze procedure. Latent recurrence of atrial fibrillation after the maze procedure is caused by many factors...
July 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/28007267/off-pump-neochord-mitral-valve-repair-to-simultaneously-treat-posterior-leaflet-prolapse-and-systolic-anterior-motion
#4
Stefano Salizzoni, Matteo Marro, Chiara Rovera, Giovanni Speziali, Mauro Rinaldi
This case represents the first report of complete elimination of systolic anterior motion by beating-heart implantation of artificial chordae tendineae on a prolapsing and redundant posterior leaflet.
January 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/28007259/a-standardized-loop-technique-for-mitral-valve-repair
#5
Ilir Hysi, Olivier Rebet, Laurence Gautier, Olivier Fabre
The loop technique is widely used for mitral valve repair. However, estimation of the correct loops' length remains challenging. We describe a standardized technique with implantation of standardized 15- and 25-mm loops for posterior and anterior mitral prolapses. The number of loops and the site of their implantation are decided after a careful surgical valve analysis. This has shown reliable results in our initial experience in eight patients both, in sternotomy and minimally invasive surgery repairs, but needs further long-term evaluation...
January 2017: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27989065/repair-of-anterior-mitral-leaflet-prolapse-comparison-of-mid-term-outcomes-with-chordal-transposition-and-chordal-replacement-techniques
#6
Thierry Bourguignon, Amine Mazine, Charles Laurin, Denis Bouchard, Phillippe Demers, Michel Pellerin
BACKGROUND: The repair of anterior mitral leaflet prolapse is known to be challenging. Hence, the study aim was to compare the mid-term results of anterior leaflet prolapse (ALP) using chordal transposition with results obtained using chordal replacement with expanded polytetrafluoroethylene (ePTFE) sutures. METHODS: Between 1999 and 2012, a total of 96 consecutive patients (mean age 62 years) with ALP underwent mitral valve repair at the authors' institution. Surgery involved either chordal transposition from the posterior to the anterior leaflet (n = 67), or chordal replacement using ePTFE sutures (n = 29)...
March 2016: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/27989043/distant-position-of-chordae-from-coaptation-causes-mitral-regurgitation-in-patients-with-atrial-fibrillation
#7
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/27970234/tct-842-mitraclamp-a-new-promising-device-for-transcatheter-treatment-of-mitral-valve-prolapse
#8
Rachid Zegdi
No abstract text is available yet for this article.
November 1, 2016: Journal of the American College of Cardiology
https://www.readbyqxmd.com/read/27942491/technical-aspects-of-robotic-posterior-mitral-valve-leaflet-repair
#9
REVIEW
Hoda Javadikasgari, Rakesh M Suri, Tomislav Mihaljevic, Stephanie Mick, A Marc Gillinov
Posterior mitral valve leaflet repair is safe, effective and durable and can be performed through conventional sternotomy or by using minimally invasive thoracoscopic or robotic-assisted approaches. Triangular resection with ventricularization, quadrangular resection with sliding or folding leaflet reconstruction, neochordae implantation and edge-to-edge leaflet repair are different techniques for eliminating the prolapsing mitral leaflet segment and restoring normal leaflet coaptation. Recent studies have demonstrated that minimally invasive approaches are associated with a reduced risk of postoperative complications, shorter hospital stay and improved cosmetic outcomes when compared to conventional sternotomy...
November 2016: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/27919209/evaluation-of-echocardiographic-abnormalities-in-hiv-positive-patients-treated-with-antiretroviral-medications
#10
Sina Moradmand Badie, Mehrnaz Rasoulinejad, Mohammadreza Salehi, Hamid Emadi Kochak, SeyedAhmad SeyedAlinaghi, Seyed Ali Dehghan Manshadi, Fatemeh Jahanjo Amin Abad, Banafsheh Moradmand Badie
BACKGROUND: Echocardiography is a reliable means for the diagnosis of functional and valvular diseases of the heart in HIV positive and HIV negative patients. The current study was to evaluate echocardiographic abnormalities in HIV positive patients under an antiretroviral therapy (ART) program in Tehran, Imam Khomeini Hospital, Iran. METHODS: This is a descriptive cross-sectional study, conducted among 231 HIV positive patients under ART. All HIV positive patients including 150 men (65%) and 81 women (35%) (mean age of 41 years) were assessed by trans-thoracic echocardiography (TTE) in Imam Khomeini Hospital, over the period from 2013 to 2014...
December 5, 2016: Infectious Disorders Drug Targets
https://www.readbyqxmd.com/read/27916382/neochord-placement-versus-triangular-resection-in-mitral-valve-repair-a-finite-element-model
#11
Ashley E Morgan, Joe L Pantoja, Eugene A Grossi, Liang Ge, Jonathan W Weinsaft, Mark B Ratcliffe
BACKGROUND: Recurrent mitral regurgitation after mitral valve repair is common, occurring in nearly 50% of patients within 10 years of surgery. Durability of repair is partly related to stress distribution over the mitral leaflets. We hypothesized that repair with neochords (NCs) results in lower stress than leaflet resection (LR). MATERIALS AND METHODS: Magnetic resonance imaging and 3D echocardiography were performed before surgical repair of P2 prolapse in a single patient...
November 2016: Journal of Surgical Research
https://www.readbyqxmd.com/read/27908608/a-hospital-based-survey-of-patients-with-severe-valvular-heart-disease-in-china
#12
Po Hu, Xian-Bao Liu, Jie Liang, Qi-Feng Zhu, Chao-Xia Pu, Meng-Yao Tang, Jian-An Wang
OBJECTIVES: Due to increasing aging, the epidemiology of VHD may have changed in China. This study aimed to provide contemporary information on the prevalence, distribution patterns, and etiology of severe VHD in China. METHODS: This was a retrospective survey at Second Affiliated Hospital of Zhejiang University, which included all consecutive patients between 2010 and 2015. RESULTS: In all, 139,496 patients were enrolled. Among severe valve diseases, MR was the most frequent (n=946, 0...
November 25, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27899396/twenty-year-outcome-after-mitral-repair-versus-replacement-for-severe-degenerative-mitral-regurgitation-analysis-of-a-large-prospective-multicenter-international-registry
#13
Siham Lazam, Jean-Louis Vanoverschelde, Christophe Tribouilloy, Francesco Grigioni, Rakesh M Suri, Jean-Francois Avierinos, Christophe de Meester, Andrea Barbieri, Dan Rusinaru, Antonio Russo, Agnès A Pasquet, Hector I Michelena, Marianne Huebner, Joseph Maalouf, Marie-Annick Clavel, Catherine Szymanski, Maurice E Enriquez-Sarano
BACKGROUND: -Mitral valve (MV) repair is preferred over replacement in clinical guidelines and is an important determinant of the indication for surgery in degenerative mitral regurgitation (MR). Yet, the level of evidence supporting current recommendations is low, and recent data cast doubts on its validity in the current era. Accordingly, the aim of the present study was to analyze very long-term outcome after MV repair and replacement for degenerative MR with a flail leaflet. METHODS: -MIDA is a multicenter registry enrolling patients with degenerative MR with a flail leaflet in 6 tertiary European and US centers...
November 29, 2016: Circulation
https://www.readbyqxmd.com/read/27891427/anaesthetic-management-of-a-case-of-down-s-syndrome-with-achalasia-cardia
#14
Neeta Santha, Madhusudan Upadya, Sravanthi Vishwanatham
Achalasia cardia is a disorder of the gastrointestinal tract characterized by dilatation of the oesophagus and collection of food and fluids in the oesophagus leading to massive regurgitation and aspiration of gastric contents. Down's syndrome has multisystem effects which can also present as difficult airway. Here, we present a case of a 14-year-old girl, a case of Down's syndrome with Achalasia cardia and mitral valve prolapse posted for Heller's cardiomyotomy. Anaesthetic concerns were difficult airway due to Downs's syndrome, massive aspiration risks of Achalasia cardia and haemodynamic instability due to mitral regurgitation...
October 2016: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/27876001/severe-mitral-regurgitation-due-to-mitral-leaflet-aneurysm-diagnosed-by-three-dimensional-transesophageal-echocardiography-a-case-report
#15
Takao Konishi, Naohiro Funayama, Tadashi Yamamoto, Daisuke Hotta, Kenjiro Kikuchi, Katsumi Ohori, Hiroshi Nishihara, Shinya Tanaka
BACKGROUND: A small mitral valve aneurysm (MVA) presenting as severe mitral regurgitation (MR) is uncommon. CASE PRESENTATION: A 47-year-old man with a history of hypertension complained of exertional chest discomfort. A transthoracic echocardiogram (TTE) revealed the presence of MR and prolapse of the posterior leaflet. A 6-mm in diameter MVA, not clearly visualized by TTE, was detected on the posterior leaflet on a three-dimensional (3D) transesophageal echocardiography (TEE)...
November 22, 2016: BMC Cardiovascular Disorders
https://www.readbyqxmd.com/read/27865679/percutaneous-closure-of-isolated-ostium-secundum-type-atrial-septal-defect-in-a-patient-with-mayer-rokitansky-k%C3%A3-ster-hauser-syndrome
#16
Murat Akcay, Okan Gulel, Korhan Soylu, Murat Meric, Muzaffer Elmali
Mayer-Rokitansky-Küster-Hauser (MRKH) syndrome is a rare congenital anomaly characterized by complete or partial aplasia of the uterus and the upper part of the vagina. It is reported to be associated with cardiovascular disorders including atrial septal defect, anomalous pulmonary venous return, aortopulmonary window, pulmonary valve stenosis, mitral valve prolapse, tetralogy of Fallot, truncus arteriosus, and patent ductus arteriosus. Herein, for the first time in the medical literature, we present percutaneous closure of an isolated ostium secundum atrial septal defect in this syndrome...
December 2016: Portuguese Journal of Cardiology: An Official Journal of the Portuguese Society of Cardiology
https://www.readbyqxmd.com/read/27863743/in-vitro-and-in-silico-approaches-to-quantify-the-effects-of-the-mitraclip-%C3%A2-system-on-mitral-valve-function
#17
Francesco Sturla, Riccardo Vismara, Michal Jaworek, Emiliano Votta, Paolo Romitelli, Omar A Pappalardo, Federico Lucherini, Carlo Antona, Gianfranco B Fiore, Alberto Redaelli
Mitraclip(®) implantation is widely used as a valid alternative to conventional open-chest surgery in high-risk patients with severe mitral valve (MV) regurgitation. Although effective in reducing mitral regurgitation (MR) in the majority of cases, the clip implantation produces a double-orifice area that can result in altered MV biomechanics, particularly in term of hemodynamics and mechanical stress distribution on the leaflets. In this scenario, we combined the consistency of in vitro experimental platforms with the versatility of numerical simulations to investigate clip impact on MV functioning...
January 4, 2017: Journal of Biomechanics
https://www.readbyqxmd.com/read/27829586/left-atrial-remodeling-in-segmental-vs-global-mitral-valve-prolapse%C3%A3-three-dimensional-echocardiography
#18
Atsushi Hayashi, Shota Fukuda, Keitaro Mahara, Soshi Hei, Takeshi Onoue, Yuichiro Kado, Yasufumi Nagata, Mai Iwataki, Kyoko Otani, Tetsu Miyamoto, Yasushi Oginosawa, Shinjo Sonoda, Masataka Eto, Yosuke Nishimura, Shuichiro Takanashi, Robert A Levine, Yutaka Otsuji
BACKGROUND: Segmental and global mitral valve prolapse (MVP) comprise 2 representative phenotypes in this syndrome. While mitral regurgitation (MR) severity is a major factor causing left atrial (LA) remodeling in MVP, prominent mitral valve (MV) annulus dilatation in global MVP may specifically cause inferiorly predominant LA remodeling. We compared MV annulus and LA geometry in patients with segmental and global MVP.Methods and Results:LA volume as well as inferior, middle, and superior LA cross-sectional areas (CSA) were measured on 3-D echocardiography in 20 controls, in 40 patients with segmental MVP, and in 18 with global MVP...
November 9, 2016: Circulation Journal: Official Journal of the Japanese Circulation Society
https://www.readbyqxmd.com/read/27826344/clinical-characteristics-of-marfan-syndrome-in-korea
#19
A Young Lim, Ju Sun Song, Eun Kyoung Kim, Shin Yi Jang, Tae-Young Chung, Seung-Hyuk Choi, Kiick Sung, June Huh, I-Seok Kang, Yeon Hyeon Choe, Chang-Seok Ki, Duk-Kyung Kim
BACKGROUND AND OBJECTIVES: Marfan syndrome (MFS) is a connective tissue disorder with autosomal dominant inheritance and a highly variable clinical spectrum. However, there are limited data available on the clinical features of Korean patients with MFS. The aim of the present study was to describe the clinical characteristics and outcomes of Korean patients with MFS. SUBJECTS AND METHODS: We included all patients who were diagnosed with MFS between January 1995 and May 2015 at a single tertiary medical center...
November 2016: Korean Circulation Journal
https://www.readbyqxmd.com/read/27803825/native-mitral-valve-endocarditis-caused-by-neisseria-elongata-subsp-nitroreducens-in-a-patient-with-marfan-syndrome-first-case-in-italy-and-review-of-the-literature
#20
Parrinello Rossella, Carità Patrizia, Triolo Fabio Oreste, Trapani Renato, Grassedonio Emanuele, Argano Vincenzo, Novo Giuseppina, Vallone Silvana, Fasciana Teresa, Verdecchia Massimo, Giammanco Anna, Midiri Massimo, Novo Salvatore
Neisseria elongata (NE) is an aerobic Gram-negative organism that constitutes part of the commensal human normal oropharyngeal flora. Although previously considered not to be pathogenic, it has been recognized as an occasional cause of significant infections in humans. We report here the first case in Italy of infective endocarditis of a native prolapsing mitral valve in a patient with Marfan syndrome, caused by NE subspecies nitroreducens which has been rarely isolated from clinical specimens. The culprit organism has been confirmed by mass spectrometry directly from the positive blood culture, as previously reported...
2016: Case Reports in Infectious Diseases
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