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https://www.readbyqxmd.com/read/27861426/mastering-mitral-leaflets-coaptation-after-valve-repair-with-adjustable-mitral-annuloplasty-ring-prove-of-concept-in-mock-loop-study
#1
Piergiorgio Tozzi, Daniel Hayoz, Carlo Antona, Gianfranco B Fiore, Giuseppe Siniscalchi, Enrico Ferrari, Gérard Baeriswyl, Riccardo Vismara
This investigation sought to determine the feasibility of a novel mitral ring designed to reshape mitral annulus on beating heart, after surgery. The mitral ring is intended to improve mitral leaflets coaptation to correct residual and recurrent mitral regurgitations. It could also provide progressive correction of mitral regurgitation. The device was tested in ex vivo beating heart model.The novel mitral ring is selectively deformable in P1, P2 and P3 segments using a dedicated angioplasty-type balloon. The deformation should increase leaflets' coaptation reducing distance between the two leaflets...
November 15, 2016: ASAIO Journal: a Peer-reviewed Journal of the American Society for Artificial Internal Organs
https://www.readbyqxmd.com/read/27832857/first-in-human-of-catheter-delivered-annuloplasty-ring-to-treat-functional%C3%A2-mitral-regurgitation
#2
Gino Gerosa, Laura Besola, Erica Manzan, Eleonora Bizzotto, Fabio Zucchetta, Demetrio Pittarello, Giuseppe Tarantini, David Meerkin, Andrea Colli
No abstract text is available yet for this article.
November 14, 2016: JACC. Cardiovascular Interventions
https://www.readbyqxmd.com/read/27777294/impact-of-left-ventricular-to-mitral-valve-ring-mismatch-on-recurrent-ischemic-mitral-regurgitation-after-ring-annuloplasty
#3
Romain Capoulade, Xin Zeng, Jessica R Overbey, Gorav Ailawadi, John H Alexander, Deborah Ascheim, Michael Bowdish, Annetine C Gelijns, Paul Grayburn, Irving L Kron, Robert A Levine, Michael J Mack, Serguei Melnitchouk, Robert E Michler, John C Mullen, Patrick O'Gara, Michael K Parides, Peter Smith, Pierre Voisine, Judy Hung
BACKGROUND: In ischemic mitral regurgitation (IMR), ring annuloplasty is associated with a significant rate of recurrent MR. Ring size is based on intertrigonal distance without consideration of left ventricular (LV) size. However, LV size is an important determinant of mitral valve (MV) leaflet tethering before and after repair. We aimed to determine whether LV-MV ring mismatch (mismatch of LV size relative to ring size) is associated with recurrent MR in patients with IMR after restrictive ring annuloplasty...
October 25, 2016: Circulation
https://www.readbyqxmd.com/read/27772596/percutaneous-rescue-for-critical-mitral-stenosis-late-after-mitral-valve-repair
#4
Rawn Salenger, Xavier Diao, Murtaza Y Dawood, Daniel L Herr, George A Sample, Augusto Pichard, James S Gammie
We report a case of catastrophic hemodynamic compromise secondary to pannus ingrowth and severe mitral stenosis occurring years after repair of a nonrheumatic mitral valve. The initial repair included closure of a posterior leaflet cleft and implantation of an annuloplasty ring. We describe a hybrid treatment strategy for this severely compromised patient, which included initial placement of a right ventricular assist device followed by percutaneous balloon mitral valvuloplasty and, eventually, a definitive mitral valve reoperation...
November 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27751330/hemolysis-induced-by-pmivsd-occluder
#5
D Sheshagiri Rao, Ramachandra Barik, Akula Siva Prasad
Hemolysis related to occluder, prosthetic valve, and prosthetic ring used for mitral valve annuloplasty are not very unusual. However, hemolysis related to transcathetor closure of post-myocardial infarction ventricular septal defect (PMIVSD) is infrequent. A close follow-up for spontaneous resolution with or without blood transfusion has been reported in a few cases. Occasionally, surgical retrieval is unavoidable or lifelong blood transfusion is required if surgery cannot be done because of higher risk. In this illustration, we have showed a close follow-up of a case of hemolysis induced by atrial septal occluder used for VSD closure after myocardial infarction...
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27751301/very-early-onset-traumatic-hemolysis-following-mitral-valve-repair-in-a-pediatric-patient
#6
Abhijeet V Naik, Parag S Bhalgat, Nilesh S Bhadane, Suresh V Joshi
Hemolytic anemia following a mitral valve repair is a very rare complication, with only 70 cases reported worldwide. We present a case of an 8-year-old girl who presented with a very early onset hemolytic anemia following a mitral valve repair with ring annuloplasty, which necessitated a reoperation. The report also discusses the various mechanisms of traumatic hemolysis associated with valve repair and probable lessons learnt and ways to avoid this complication.
September 2016: Indian Heart Journal
https://www.readbyqxmd.com/read/27748474/giant-left-atrium-in-undersized-mitral-ring-annuloplasty
#7
Nicole Bertin, Aniello Pappalardo, Alessandro Minati, Gabriella Forti, Serena Favretto, Franco Pertoldi, Eleonora Ficarra, Francesco Pelizzo, Olga Vriz
Enlargement of left atrium occurs in patients with longstanding mitral valve disease due to chronic pressure and volume overload and occasionally left atrium reaches a massive enlargement, condition known as giant left atrium. It is most commonly associated with rheumatic mitral valve disease, both stenosis and regurgitation. This unique case deals with a 70-year-old woman who developed a giant left atrium due to a severe mitral regurgitation from complete prolapse of both mitral leaflets, as a consequence of previous undersized mitral ring annuloplasty...
October 14, 2016: Monaldi Archives for Chest Disease, Archivio Monaldi Per le Malattie del Torace
https://www.readbyqxmd.com/read/27720201/undersized-mitral-annuloplasty-increases-strain-in-the-proximal-lateral-left-ventricular-wall
#8
Joe Luis Pantoja, Ashley E Morgan, Eugene A Grossi, Morten O Jensen, Jonathan W Weinsaft, Robert A Levine, Liang Ge, Mark B Ratcliffe
BACKGROUND: Recurrence of mitral regurgitation (MR) after undersized mitral annuloplasty (MA) for ischemic MR is as high as 60%, with the recurrence rate likely due to continued dilation of the left ventricle (LV). To better understand the causes of recurrent MR, we studied the effect of undersized MA on strain in the LV wall. We hypothesize that the acute change in ventricular shape induced by MA will cause increased strain in regions nearest the mitral valve. METHODS: Finite element models were previously reported, based on cardiac magnetic resonance images of 5 sheep with mild to moderate ischemic MR...
October 5, 2016: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/27702829/single-stage-three-fold-repair-for-ebstein-s-anomaly
#9
Ezzeldin A Mostafa, Ashraf A H El Midany, Yasser Elnahas, Ahmed Helmy, Sherif A Mansour
OBJECTIVES: Favourable outcomes in the repair of Ebstein's anomaly are predicated on tricuspid valve competence, right ventricular function and presence of arrhythmia. We report our experience with a single-stage, three-fold repair of Ebstein's anomaly, namely, cone reconstruction of the tricuspid valve supplemented by bidirectional cavopulmonary anastomosis and right atrial electrocautery maze. METHODS: From 2010 to 2014, 37 consecutive patients with Ebstein's anomaly, median age 17...
October 4, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27677880/congenital-absence-of-anterior-papillary-muscle-of-the-tricuspid-valve-and-surgical-repair-with-artificial-chordae
#10
Chuan Tian, Shiwei Pan
We report the case of a 26-year old woman who underwent successful tricuspid valve repair for the absence of the anterior papillary of the tricuspid valve. Preoperative echocardiography revealed grade IV tricuspid valve regurgitation, caused by congenital absence of the anterior papillary muscle and prolapse of the anterior leaflet. Tricuspid valve repair was performed using artificial chords consisting of two polytetrafluoroethylene sutures and a concomitant ring annuloplasty. Postoperative echocardiography revealed mild tricuspid valve regurgitation...
September 27, 2016: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/27625092/echocardiographic-follow-up-of-robotic-mitral-valve-repair-for-mitral-regurgitation-due-to-degenerative-disease
#11
Yao Wang, Chang-Qing Gao, Yan-Song Shen, Gang Wang
BACKGROUND: Mitral valve (MV) repair can now be carried out through small incisions with the use of robotic assistance. Previous reports have demonstrated the excellent clinical result of robotic MV repair for degenerative mitral regurgitation (MR). However, there has been limited information regarding the echocardiographic follow-up of these patients. The present study was therefore to evaluate the echocardiographic follow-up outcomes after robotic MV repair in patients with MR due to degenerative disease of the MV...
2016: Chinese Medical Journal
https://www.readbyqxmd.com/read/27623017/surgery-for-mitral-regurgitation-in-patients-with-aortic-root-aneurysm-transaortic-or-transseptal-approach
#12
Wen-Jian Jiang, Wei-Guo Ma, Xiao-Long Wang, Yu-Yong Liu, Jun-Ming Zhu, Li-Zhong Sun, Hong-Jia Zhang
OBJECTIVE: Mitral regurgitation is common in patients with aortic root aneurysm. Mitral valve repair (MVP) or replacement (MVR) can be performed for these patients through either a transverse aortotomy (TA) or transseptal approach (TS). This study sought to compare the early outcomes of mitral valve surgery through the TA and TS approaches and decide which is optimal for this subset of patients. METHODS: Between March 2013 and April 2015, we operated on 99 patients (81 males, 81...
November 15, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27620350/combined-papillary-muscle-sling-and-ring-annuloplasty-for-moderate-to-severe-secondary-mitral-regurgitation
#13
Christos G Mihos, Romain Capoulade, Evin Yucel, Serguei Melnitchouk, Judy Hung
BACKGROUND: There is a 30-60% incidence of recurrent mitral regurgitation (MR) after mitral valve annuloplasty (Ring) for secondary MR. A concomitant papillary muscle sling (Ring+Sling) may improve valve repair by providing a more physiologic geometry of the mitral apparatus. METHODS: We retrospectively identified 58 consecutive patients with moderate-to-severe secondary MR who underwent a Ring+Sling repair, between March 2008 and May 2015. A Ring+Sling consisted of combined annuloplasty and papillary muscle approximation, utilizing a 4-mm polytetrafluoroethylene graft placed around the base of each muscle...
September 12, 2016: Journal of Cardiac Surgery
https://www.readbyqxmd.com/read/27612147/a-novel-technique-to-reconstruct-tricuspid-valve-anterior-leaflet-in-massive-endocarditis
#14
Gabriele Di Giammarco, Daniele Marinelli, Massimiliano Foschi, Michele Di Mauro
Tricuspid valve (TV) endocarditis is a common complication in intravenous drug addicts. In case of TV replacement, the main issue is the high risk of new endocarditis on TV prosthesis. On November 2014, a 44 year-old male patient with a history of intravenous drug addiction was referred for TV endocarditis owing to Staphylococcus aureus and severe regurgitation complicated by pulmonary embolism and heart failure. Preoperative echocardiography showed a large vegetation of the anterior leaflet (1.95 × 0.92 cm) covering a huge hole in the leaflet itself...
July 2016: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/27603720/computational-virtual-evaluation-of-the-effect-of-annuloplasty-ring-shape
#15
Ahnryul Choi, David D McPherson, Hyunggun Kim
Mitral regurgitation (MR) is a result of mitral valve (MV) pathology. Its etiology can be categorized as degenerative or functional MR. Ring annuloplasty aims to reconfigure a dilated mitral annulus to its normal size and shape. We investigated the effect of annuloplasty ring shape on MR outcome using our established 3-dimensional (3-D) echocardiography-based computational MV evaluation protocols. Virtual patient MV models were created from 3-D transesophageal echocardiographic data in patients with MR because of mitral annular dilation...
September 7, 2016: International Journal for Numerical Methods in Biomedical Engineering
https://www.readbyqxmd.com/read/27528216/three-dimensional-dynamic-morphology-of-the-mitral-valve-in-different-forms-of-mitral-valve-prolapse-potential-implications-for-annuloplasty-ring-selection
#16
Astrid Apor, Anikó Ilona Nagy, Attila Kovács, Aristomenis Manouras, Péter Andrássy, Béla Merkely
BACKGROUND: Real-time three-dimensional transesophageal echocardiography has increased our understanding of the distinct pathomechanisms underlying functional, ischaemic or degenerative mitral regurgitation. However, potential differences in dynamic morphology between the subtypes of degenerative mitral prolapse have scarcely been investigated. METHODS: In order to compare the dynamic behavior of the different phenotypes of degenerative mitral valve prolapse, real-time three-dimensional transesophageal echocardiography recordings of 77 subjects, 27 with Barlow disease (BD), 32 with Fibroelastic deficiency (FED) and 18 normal controls (NC) were analysed...
2016: Cardiovascular Ultrasound
https://www.readbyqxmd.com/read/27524188/-robotic-mitral-valve-repair-perioperative-and-seven-year-follow-up-results
#17
G P Liu, M Yang, C S Xiao, G Wang, J L Wang, Y Wang, C Q Gao
OBJECTIVE: To summarize surgical experience during the conduction of robotic mitral valve repair and evaluate the long-term follow-up results. METHODS: From January 2007 to September 2014, 110 consecutive patients underwent robotic mitral valve repair under da Vinci Surgical System (Intuitive Surgical, USA) in Chinese PLA General Hospital were enrolled. The age of the patients was 14 to 65(45±12) years old. The male to female ratio was 2.3∶1. Among them, 95.5%(105/110) of the cases was diagnosed as mitral regurgitation and 4...
August 2, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27514789/transapical-tricuspid-valve-in-ring-implantation-an-alternative-approach-to-a-challenging-clinical-scenario
#18
Evaldas Girdauskas, Bernward Lauer, Thomas Kuntze
We report on a transapical tricuspid valve-in-ring implantation performed via right ventricular apex using the Sapien-XT-prosthesis. A 57-year-old woman with recurrent episodes of right heart failure and three previous sternotomies, including tricuspid valve repair with a 32 mm Carpentier-Edwards-Classic annuloplasty ring was admitted due to recurrent severe tricuspid regurgitation. Given the excessive surgical risk, a 29 mm Sapien-XT-prosthesis was selected for valve-in-ring implantation. Transapical valve-in-ring implantation procedure was uneventful...
August 12, 2016: Catheterization and Cardiovascular Interventions
https://www.readbyqxmd.com/read/27502597/severe-tricuspid-regurgitation-after-mitral-valve-surgery-the-risk-factors-and-results-of-the-aggressive-application-of-prophylactic-tricuspid-valve-repair
#19
Hiroshi Takano, Miyoko Hiramatsu, Hirota Kida, Mitsuru Uenoyama, Kei Horiguchi, Takashi Yamauchi, Keiwa Kin, Yukitoshi Shirakawa, Mitsunori Kaneko, Takashi Daimon
PURPOSE: This study aimed to examine the risk factors for severe postoperative tricuspid regurgitation (TR) in patients undergoing mitral valve surgery. We also studied the effects of prophylactic tricuspid valve repair (TVR) on severe postoperative TR. METHODS: We retrospectively studied 125 patients without severe TR who underwent mitral valve surgery from 1987 to 2006. Patients did not undergo TVR before 1998 (the early period, n = 54). In 1998 (the late period, n = 71), patients with a preoperative tricuspid annular diameter of ≥35 mm underwent TVR using an annuloplasty ring (n = 52)...
August 8, 2016: Surgery Today
https://www.readbyqxmd.com/read/27469247/are-adjunct-subvalvular-techniques-more-effective-than-isolated-restrictive-annuloplasty-for-treating-ischemic-mitral-regurgitation
#20
Leonidas V Athanasopoulos, Marco Moscarelli, Giuseppe Speziale, Prakash P Punjabi, Thanos Athanasiou
This review focused on whether subvalvular techniques are more effective than isolated restrictive annuloplasty in addressing ischemic mitral regurgitation (MR). Searching identified 445 papers and, following a selection process, we ended up with 10 articles. Two were propensity-matched studies, four retrospective and four prospective, non-randomized studies. The end points of interest were late recurrence of MR, other early echocardiographic outcomes of mitral function and early mortality. All studies focusing on echocardiographic measurements showed improved results in the groups where subvalvular repair techniques were used...
July 28, 2016: Perfusion
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