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https://www.readbyqxmd.com/read/27916741/design-and-principle-of-operation-of-the-heartmate-phptm-percutaneous-heart-pump
#1
N M Van Mieghem, Joost Daemen, Corstiaan den Uil, Onur Dur, Linda Joziasse, AnneMarie Maugenest, Keif Fitzgerald, Chris Parker, Paul Muller, Robert-Jan van Geuns
The HeartMate PHP (Percutaneous Heart Pump) is a second-generation transcatheter axial flow circulatory support system. The collapsible catheter pump is inserted through a 14F sheath, deployed across the aortic valve expanding to 24F and able to deliver up to 5L/min blood flow at minimum hemolytic risk. As such this device may be a valuable adjunct to percutaneous coronary intervention (PCI) of challenging lesions in high-risk patients or treatment of cardiogenic shock. This technical report discusses: (i) the HeartMate PHP concept, (ii) the implantation technique, (iii) the hemodynamic performance in an in vitro cardiovascular flow testing setup and (iv) preliminary clinical experience...
December 6, 2016: EuroIntervention
https://www.readbyqxmd.com/read/27913738/extracorporeal-membrane-oxygenation-in-transcatheter-aortic-valve-replacement
#2
Elena Dolmatova, Kasra Moazzami, Thomas P Cocke, Elie Elmann, Pranay Vaidya, Arthur F Ng, Kumar Satya, Rajeev L Narayan
BACKGROUND: Patients undergoing transcatheter aortic valve replacement can experience severe perioperative complications leading to hemodynamic instability and death. Venoarterial extracorporeal membrane oxygenation can be used to provide cardiorespiratory support during this time. METHODS: From 2012 to 2015, of 247 patients who underwent transcatheter aortic valve replacement, 6 (2.42%) required extracorporeal membrane oxygenation support. Their mean age was 82 ± 7...
December 2, 2016: Asian Cardiovascular & Thoracic Annals
https://www.readbyqxmd.com/read/27909513/assessment-of-sinoatrial-node-function-in-patients-with-persistent-and-long-standing-persistent-forms-of-atrial-fibrillation-after-maze-iii-procedure-combined-with-mitral-valve-operation
#3
Kulikov Aleksei A, Bokeria Leo A
RESEARCH OBJECTIVE: Assessment of sinoatrial node function after Maze III procedure combined with a mitral valve operation. METHODS: 100 patients were included in the research with persistent and long-standing persistent forms of atrial fibrillation (AF) and need of operative treatment concerning valve disease. The following preoperative preparation methods were executed to all patients: Electrocardiogram in 12 standard assignments;Two-dimensional echocardiographic with assessment of systolic and diastolic functions of the left ventricle, size of the left atrium and grade of valve disease;Transesophageal echocardiography for exclusion of blood clots in the left atrium and left atrial appendage;Coronary angiography for exclusion of coronary heart disease;Computer tomography for examination of cardiac chambers and anatomic characteristics of pulmonary veins...
June 2016: Journal of Atrial Fibrillation
https://www.readbyqxmd.com/read/27908765/long-term-requirement-for-pacemaker-implantation-after-cardiac-valve-replacement-surgery
#4
Francisco Leyva, Tian Qiu, David McNulty, Felicity Evison, Howard Marshall, Maurizio Gasparini
BACKGROUND: The risk of permanent pacemaker implantation (PPI) after cardiac valve replacement surgery is thought be highest in the post-operative period. Long-term risks are uncertain. OBJECTIVE: To determine rates and timing of PPI after valve replacement surgery. METHODS: We compared PPI rates patients undergoing aortic (AVR, n = 111,674), mitral (MVR, n = 18,402) valve replacement, AVR+MVR (n = 5,166) or AVR + MVR and tricuspid valve replacement (TVR, n = 114) or CABG without valve replacement (n=249,742)...
November 28, 2016: Heart Rhythm: the Official Journal of the Heart Rhythm Society
https://www.readbyqxmd.com/read/27906096/biological-and-functional-evaluation-of-a-novel-pyrolytic-carbon-implant-for-the-treatment-of-focal-osteochondral-defects-in-the-medial-femoral-condyle-assessment-in-a-canine-model
#5
Samantha L Salkeld, Laura P Patron, Joan C Lien, Stephen D Cook, Deryk G Jones
BACKGROUND: Osteochondral defects continue to be a clinical treatment challenge, and when left untreated, may cause pain and functional impairment. Pyrolytic carbon is a unique isotropic biomaterial used in heart valve and small joint replacements due to its excellent wear properties and biocompatibility with bone and articular cartilage. Therefore, a proposed solution is to utilize a focal pyrolytic carbon hemiarthroplasty implant as an alternative resurfacing treatment strategy for isolated cartilage lesions...
December 1, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27898502/-full-metal-jacket-treatment-of-multiple-paravalvular-leaks
#6
Giuseppe Santoro, Giancarlo Scognamiglio, Maria T Palladino, Carola Iacono, Giampiero Gaio, Maria G Russo
A 40-year-old man with osteogenesis imperfecta type I submitted to multiple procedures of surgical mitral and aortic valve replacement was referred for refractory congestive heart failure due to significant paravalvular leaks (PVLs) of both mitral and aortic prostheses. Due to perceived very high risk of a further mitroaortic surgery, transcatheter closure of PVLs under three-dimensional echocardiographic guide was performed. Thus, four Amplatzer Vascular Plug type II (St. Jude Medical Corp, St. Paul, Minnesota, USA) devices were implanted into the aortic PVLs, and three Amplatzer Vascular Plug type II devices were used to occlude a huge mitral PVL...
November 24, 2016: Journal of Cardiovascular Medicine
https://www.readbyqxmd.com/read/27895342/innovations-in-cardiovascular-care-historical-perspective-contemporary-practice-recent-trends-and-future-directions
#7
Hasanat Sharif, Mayera Tufail
Cardiovascular diseases continue to be a major cause of mortality and morbidity in the world population. First open heart procedure was performed by Gibbon in 1953, since then many advancements have been introduced to the field of cardiac surgery. Minimally invasive techniques were introduced, which include minimally invasive coronary artery bypass grafting (CABG), off-pump technique, minimally invasive valve surgery or transcatheter techniques to implant stentless or sutureless valves. The hybrid strategy to address coronary disease combines catheterisation procedures with standard surgical techniques...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27890512/safety-and-efficacy-of-valve-repositioning-during-transcatheter-aortic-valve-replacement-with-the-lotus-valve-system
#8
Hashrul N Z Rashid, Robert Gooley, Liam McCormick, Sarah Zaman, Satish Ramkumar, Damon Jackson, Ameera Amiruddin, Arthur Nasis, James Cameron, Ian T Meredith
OBJECTIVE: To determine the safety and efficacy of valve repositioning following transcatheter aortic valve replacement (TAVR) with the Lotus Valve System (Boston Scientific, Marlborough, MA, USA). INTRODUCTION: TAVR is a well-established treatment for severe aortic stenosis. The Lotus Valve System is fully repositionable and retrievable. Valve repositioning has the potential to minimize TAVR-related complications caused by valve malposition; however, the effect on adverse event rates such as stroke is unknown...
November 24, 2016: Journal of Cardiology
https://www.readbyqxmd.com/read/27883976/prognostic-value-of-liver-dysfunction-assessed-by-meld-xi-scoring-system-in-patients-undergoing-transcatheter-aortic-valve-implantation
#9
Takahide Arai, Fumiaki Yashima, Ryo Yanagisawa, Makoto Tanaka, Hideyuki Shimizu, Keiichi Fukuda, Yusuke Watanabe, Toru Naganuma, Motoharu Araki, Norio Tada, Futoshi Yamanaka, Shinichi Shirai, Masanori Yamamoto, Kentaro Hayashida
BACKGROUND: There are limited data regarding the influence of liver dysfunction on outcomes of transcatheter aortic valve implantation (TAVI). Model for End-stage Liver Disease eXcluding International normalized ratio (MELD-XI) score, which was originally developed for patients with cirrhosis awaiting liver transplantation, has been reported as a predictor of heart disease. The aim of this study was to investigate the prognostic value of MELD-XI score for patients undergoing TAVI. METHODS: Data from the prospectively maintained Optimized transCathEter vAlvular iNtervention (OCEAN-TAVI) multicenter registry were collected in 749 patients who underwent TAVI between October 2013 and August 2015...
November 10, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27883975/evaluation-of-current-practices-in-transcatheter-aortic-valve-implantation-the-written-worldwide-tavi-experience-survey
#10
Enrico Cerrato, Luis Nombela-Franco, Tamim M Nazif, Helene Eltchaninoff, Lars Søndergaard, Henrique B Ribeiro, Marco Barbanti, Fabian Nietlispach, Peter De Jaegere, Pierfrancesco Agostoni, Ramiro Trillo, Pilar Jimenez-Quevedo, Fabrizio D'Ascenzo, Olaf Wendler, Gabriel Maluenda, Mao Chen, Corrado Tamburino, Carlos Macaya, Martin B Leon, Josep Rodes-Cabau
BACKGROUND: Transcatheter aortic valve implantation (TAVI) has been adopted worldwide as the standard treatment for severe aortic stenosis in symptomatic patients at prohibitive or high surgical risk, but there are still several areas where consensus and evidence are lacking. The purpose was to obtain a global view of current practice related to TAVI with the potential to identify the main areas of consensus and divergence between centers. METHODS: An online questionnaire was distributed in centers performing TAVI including a total of 59 questions concerning pre-procedural evaluation, procedural practices and post-procedural management...
November 9, 2016: International Journal of Cardiology
https://www.readbyqxmd.com/read/27876696/stroke-prevention-strategies-in-patients-with-atrial-fibrillation-and-heart-valve-abnormalities-perceptions-of-valvular-atrial-fibrillation-results-of-the-european-heart-rhythm-association-survey
#11
Tatjana S Potpara, Gregory Y H Lip, Torben B Larsen, Antonio Madrid, Dan Dobreanu, Ewa Jędrzejczyk-Patej, Nikolaos Dagres
The purpose of this European Heart Rhythm Association (EHRA) Survey was to assess the perceptions of 'valvular' atrial fibrillation (AF) and management of AF patients with various heart valve abnormalities in daily clinical practice in European electrophysiology (EP) centres. Questionnaire survey was sent via the Internet to the EHRA-EP Research Network Centres. Of the 52 responding centres, 42 (80.8%) were university hospitals. Choosing the most comprehensive definition of valvular AF, a total of 49 centres (94...
October 2016: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/27873344/impact-of-residual-mitral-regurgitation-on-right-ventricular-systolic-function-after-left-ventricular-assist-device-implantation
#12
Serkan Ertugay, Hatice S Kemal, Umit Kahraman, Catagay Engin, Sanem Nalbantgil, Tahir Yagdi, Mustafa Ozbaran
Significant mitral regurgitation (MR) is thought to decrease after left ventricular assist device (LVAD) implantation, and therefore repair of mitral valve is not indicated in current practice. However, residual moderate and severe MR leads to pulmonary artery pressure increase, thereby resulting in right ventricular (RV) dysfunction during follow-up. We examined the impact of residual MR on systolic function of the right ventricle by echocardiography after LVAD implantation. This study included 90 patients (mean age: 51...
November 22, 2016: Artificial Organs
https://www.readbyqxmd.com/read/27873180/pledget-armed-sutures-affect-the-haemodynamic-performance-of-biologic-aortic-valve-substitutes-a-preliminary-experimental-and-computational-study
#13
Claudio Capelli, Chiara Corsini, Dario Biscarini, Francesco Ruffini, Francesco Migliavacca, Alfred Kocher, Guenther Laufer, Andrew M Taylor, Silvia Schievano, Martin Andreas, Gaetano Burriesci, Claus Rath
Surgical aortic valve replacement is the most common procedure of choice for the treatment of severe aortic stenosis. Bioprosthetic valves are traditionally sewed-in the aortic root by means of pledget-armed sutures during open-heart surgery. Recently, novel bioprostheses which include a stent-based anchoring system have been introduced to allow rapid implantation, therefore reducing the duration and invasiveness of the intervention. Different effects on the hemodynamics were clinically reported associated with the two technologies...
November 21, 2016: Cardiovascular Engineering and Technology
https://www.readbyqxmd.com/read/27873022/current-rare-indications-and-future-directions-for-implantable-loop-recorders
#14
Simon Wechselberger, Christopher Piorkowski, Matthias Pohl
The scope of application for implantable loop recorders has shifted away from the evaluation of unclear palpitations and syncope episodes to more complex conditions. This article focuses on rare indications of growing importance such as rhythm monitoring after ablation of atrial fibrillation or after cryptogenic stroke. Furthermore, forthcoming applications in various clinical settings are described, e. g., arrhythmia detection after myocardial infarction, after catheter-based valve interventions, in heart failure, and in cardiomyopathies...
December 2016: Herzschrittmachertherapie & Elektrophysiologie
https://www.readbyqxmd.com/read/27872442/commentary-on-the-association-of-blood-group-antigens-with-post-implant-thrombosis-of-mechanical-heart-valves
#15
EDITORIAL
Leili Pourafkari, Nader D Nader
No abstract text is available yet for this article.
November 2016: Anatolian Journal of Cardiology
https://www.readbyqxmd.com/read/27869890/-anmco-sic-sici-gise-sicch-consensus-document-risk-stratification-in-elderly-patients-undergoing-cardiac-surgery-and-transcatheter-aortic-valve-implantation
#16
Giovanni Pulignano, Michele Massimo Gulizia, Samuele Baldasseroni, Francesco Bedogni, Giovanni Cioffi, Ciro Indolfi, Francesco Romeo, Adriano Murrone, Francesco Musumeci, Alessandro Parolari, Leonardo Patanè, Paolo Giuseppe Pino, Annalisa Mongiardo, Carmen Spaccarotella, Roberto Di Bartolomeo, Giuseppe Musumeci
Aortic stenosis is one the most frequent valvular diseases in developed countries, and its impact on public healthcare resources and assistance is increasing. A substantial proportion of elderly patients with severe aortic stenosis is frequently not eligible for surgery because of advanced age, frailty and multiple comorbidities. Transcatheter aortic valve implantation (TAVI) enables the treatment of very elderly patients at high or prohibitive surgical risk considered ineligible for surgery and with an acceptable life expectancy...
September 2016: Giornale Italiano di Cardiologia
https://www.readbyqxmd.com/read/27867985/transapical-beating-heart-mitral-valve-repair-using-a-cordal-implantation-device-are-we-ready-to-open-our-minds
#17
EDITORIAL
Talal Al-Atassi, Vinod H Thourani
No abstract text is available yet for this article.
October 2016: Annals of Translational Medicine
https://www.readbyqxmd.com/read/27867460/percutaneous-dual-valve-intervention-in-a-high-risk-patient-with-severe-aortic-and-mitral-stenosis
#18
Blaz Mrevlje, Mohamad Aboukura, Christoph A Nienaber
Aortic stenosis is the most frequent and mitral stenosis is the least frequent native single-sided valve disease in Europe. Patients with the combination of severe symptomatic degenerative aortic and mitral stenosis are very rare. Guidelines for the treatment of heart valve diseases are clear for single-valve situations. However, there is no common agreement or recommendation for the best treatment strategy in patients with multiple valve disease and severe concomitant comorbidities. A 76-year-old female patient with the combination of severe degenerative symptomatic aortic and mitral stenosis and several comorbidities including severe obesity, who was found unsuitable surgical candidate by the heart team and unsuitable for two-time general anesthesia in the case of two-step single-valve percutaneous approach by anesthesiologists, underwent successful percutaneous dual-valve single-intervention (transcatheter aortic valve implantation and percutaneous mitral balloon commissurotomy)...
July 2016: Heart Views: the Official Journal of the Gulf Heart Association
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
#19
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...
November 10, 2016: Journal of Biomechanics
https://www.readbyqxmd.com/read/27862860/incidence-and-predictors-of-permanent-pacemaker-implantation-following-treatment-with-the-repositionable-lotus%C3%A2-transcatheter-aortic-valve
#20
Sarah Zaman, Liam McCormick, Robert Gooley, Hashrul Rashid, Satish Ramkumar, Damon Jackson, Samuel Hui, Ian T Meredith
OBJECTIVES: To determine the incidence and predictors of permanent pacemaker (PPM) requirement following transcatheter aortic valve replacement (TAVR) with the mechanically expanded Lotus(TM) Valve System (Boston Scientific). BACKGROUND: Pacemaker implantation is the most common complication following TAVR. Predictors of pacing following TAVR with the Lotus valve have not been systematically assessed. METHODS: Consecutive patients with severe aortic stenosis who underwent Lotus valve implantation were prospectively recruited at a single-centre...
November 12, 2016: Catheterization and Cardiovascular Interventions
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