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Medtronic ATS

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https://www.readbyqxmd.com/read/27355145/pannus-formation-leads-to-valve-malfunction-in-the-tricuspid-position-19-years-after-triple-valve-replacement
#1
Ebraham Alskaf, Hannah McConkey, Nabila Laskar, Attila Kardos
The Medtronic ATS Open Pivot mechanical valve has been successfully used in heart valve surgery for more than two decades. We present the case of a patient who, 19 years following a tricuspid valve replacement with an ATS prosthesis as part of a triple valve operation following infective endocarditis, developed severe tricuspid regurgitation due to pannus formation.
2016: Heart Surgery Forum
https://www.readbyqxmd.com/read/25803774/left-ventricular-mass-regression-after-two-alternative-sutureless-aortic-bioprostheses
#2
Giovanni Concistrè, Francesca Chiaramonti, Giuseppe Santarpino, Steffen Pfeiffer, Federica Marchi, Ferdinand Vogt, Antonio Miceli, Mattia Glauber, Theodor Fischlein, Marco Solinas
OBJECTIVE: Left ventricular (LV) hypertrophy in aortic stenosis (AS) constitutes a risk factor for cardiac morbidity and mortality. The aim of this study was to investigate the degree of LV mass regression after aortic valve replacement (AVR) with two alternative sutureless self-expanding strategies: Perceval S (Sorin Group, Saluggia, Italy) (P) and 3f Enable (Medtronic, ATS Medical, Minneapolis, MN USA) (E) aortic bioprostheses. METHODS: Between March 2010 and December 2011, 129 patients with symptomatic AS underwent AVR with the Perceval S or 3f Enable bioprostheses in two cardiac surgery departments (Massa, Italy; Nuremberg, Germany)...
March 2015: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/25757759/sutureless-prostheses-and-less-invasive-aortic-valve-replacement-just-an-issue-of-clamping-time
#3
Marco Vola, Salvatore Campisi, Antoine Gerbay, Jean-François Fuzellier, Iness Ayari, Jean-Pierre Favre, Michael Faure, Jerôme Morel, Amedeo Anselmi
BACKGROUND: Recently, sutureless aortic bioprostheses have been increasingly adopted to facilitate minimally invasive aortic valve replacement. We aimed at evaluating the impact of the transition from conventional bioprostheses to the routine use of the 3f Enable prosthesis (Medtronic ATS Medical, Minneapolis, MN) for aortic valve replacement through ministernotomy. METHODS: Between November 2009 and November 2012, 83 consecutive minimally invasive aortic valve replacement procedures were performed in our institution by the same surgeon through an upper T-shaped ministernotomy...
May 2015: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/25629457/tricuspid-valve-repair-for-the-poor-right-ventricle-tricuspid-valve-repair-in-patients-with-mild-to-moderate-tricuspid-regurgitation-undergoing-mitral-valve-repair-improves-in-hospital-outcome
#4
Alicja Zientara, Michele Genoni, Kirk Graves, Dragan Odavic, Helen Löblein, Achim Häussler, Omer Dzemali
Background Tricuspid regurgitation (TR) in patients undergoing surgery for mitral valve (MV) increases morbidity and mortality, especially in case of a poor right ventricle. Does repair of mild-to-moderate insufficiency of the tricuspid valve (TV) in patients undergoing MV surgery lead to a benefit in early postoperative outcome? Methods A total of 22 patients with mild-to-moderate TR underwent MV repair and concomitant TV repair with Tri-Ad (Medtronic ATS Medical Inc., Minneapolis, Minnesota, United States) and Edwards Cosgrove (Edwards Lifesciences Irvine, California, United States) rings...
January 28, 2015: Thoracic and Cardiovascular Surgeon
https://www.readbyqxmd.com/read/25292382/-usefulness-of-echocardiography-for-detecting-prosthetic-valve-dysfunction-report-of-a-case
#5
Shogo Oyama, Shingo Ohuchi, Tadashi Okubo, Kazuya Kumagai
A 78-year-old woman with a history of mitral valve stenosis underwent open mitral commissurotomy in 1976. In 1990, she underwent mitral valve replacement (Medtronic-Hall 29 mm), tricuspid annuloplasty(DeVega method), and pacemaker implantation for bradycardiac atrial fibrillation. However, in June 2012, she developed anemia of unknown cause. Prosthetic valve dysfunction was suspected, because intermittent changes in the left ventricular inflow was detected by echocardiography. Fluoroscopy actually confirmed the presence of prosthetic valve dysfunction...
October 2014: Kyobu Geka. the Japanese Journal of Thoracic Surgery
https://www.readbyqxmd.com/read/23571790/sutureless-aortic-valve-implantation-through-an-upper-v-type-ministernotomy-an-innovative-approach-in-high-risk-patients
#6
Giovanni Concistrè, Antonio Miceli, Francesca Chiaramonti, Pierandrea Farneti, Stefano Bevilacqua, Egidio Varone, Marco Solinas, Mattia Glauber
OBJECTIVE: Aortic valve replacement in minimally invasive approach has shown to improve clinical outcomes even with a prolonged cardiopulmonary bypass and aortic cross-clamp (ACC) time. Sutureless aortic valve implantation may ideally shorten operative time. We describe our initial experience with the sutureless 3f Enable (Medtronic, Inc, ATS Medical, Minneapolis, MN USA) aortic bioprosthesis implanted in minimally invasive approach in high-risk patients. METHODS: Between May 2010 and May 2011, thirteen patients with severe aortic stenosis underwent aortic valve replacement with the 3f Enable bioprosthesis through an upper V-type ministernotomy interrupted at the second intercostal space...
January 2013: Innovations: Technology and Techniques in Cardiothoracic and Vascular Surgery
https://www.readbyqxmd.com/read/23094434/-clinical-evaluation-of-complications-after-implantation-of-stentless-biological-equine-pericardial-bioprothesis
#7
Krzysztof Bartuś, Jerzy Sadowski, Bogusław Kapelak, Karol Wierzbicki, Stanisław Bartuś, Jacek Myć, Krzysztof Oleś, Janusz Konstanty-Kalandyk, Grzegorz Filip
UNLABELLED: Stentless bio-protheses are more and more frequently used in patients with severe aortic stenosis, due to good hemo-dynamic parameters and durability after aortic valve replacement (AVR). Aim of the study was the clinical evaluation of complications after surgical AVR using the 3F equine pericardial stentless bioprothesis (ATS Medtronic, Inc, Minneapolis, USA). PATIENTS AND METHODS: 45 patients (10 women, 35 men), aged from 23 to 78 had implanted the bioprothesis...
2012: Przegla̧d Lekarski
https://www.readbyqxmd.com/read/23094433/-prospective-assessment-of-circulatory-sufficiency-of-the-patients-after-3f-equine-pericardial-stentless-bioprosthesis-replacement
#8
Krzysztof Bartuś, Jerzy Sadowski, Bogusław Kapelak, Karol Wierzbicki, Jacek Myć, Stanisław Bartuś, Krzysztof Oleś, Janusz Konstanty-Kalandyk, Grzegorz Filip
INTRODUCTION: During years more and more advanced Technologies are used for treatment of severe aortic stenosis. One of them is equine pericardial stentless bioprothesis. AIM OF THE STUDY: the aim of the study was prospective assessment of circulatory sufficiency of the patients after 3F equine pericardial stentless bioprothesis replacement (ATS-Medtronic, Inc, Minneapolis, USA). PATIENTS AND METHODS: Patients qualified to valve replacement were qualified to the study...
2012: Przegla̧d Lekarski
https://www.readbyqxmd.com/read/22474749/diastolic-properties-of-the-sorin-solo-ats-3f-edwards-prima-plus-and-medtronic-freestyle-stentless-valves-an-independent-in-vitro-comparison
#9
COMPARATIVE STUDY
Luca Weltert, Saverio Nardella, Fabiana Girola, Raffaele Scaffa, Alessandro Bellisario, Daniele Maselli, Ruggero De Paulis
BACKGROUND AND AIM OF THE STUDY: Currently, little is known of the diastolic properties of stentless valves that affect stress and strain on leaflets and, hence, their durability. In a pressurized aortic root model, a series of in-vitro tests was conducted to determine how stentless valves behave in diastole, and how they adapt to different annulus-to-sinotubular junction (STJ) ratios. METHODS: Sixteen 25 mm stentless aortic valves (four each of the Sorin Solo, ATS 3F, Edwards Prima Plus and Medtronic FreeStyle) were sutured into a 32 mm Valsalva graft, suspending the commissures into the expandable region (42 mm)...
January 2012: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/22388999/delayed-dislocation-of-a-sutureless-aortic-bioprosthesis-the-first-case
#10
Giovanni Concistrè, Antonio Miceli, Francesca Chiaramonti, Mattia Glauber
Sutureless aortic bioprosthesis implantation is an alternative technique in high-risk patients undergoing aortic valve replacement with a possible reduction in the extracorporeal circuit time and reliable haemodynamic features. A 3F Enable (ATS Medical-Medtronic, Inc., Minneapolis, MN, USA) has shown very good results. We report the first upward displacement of 3F Enable three months post implantation.
June 2012: Interactive Cardiovascular and Thoracic Surgery
https://www.readbyqxmd.com/read/22236511/long-term-hemodynamic-performance-of-bileaflet-prostheses-versus-tilting-disc-prostheses-in-the-aortic-position
#11
Dong Seop Jeong, Pyo Won Park, Kiick Sung, Seung Woo Park, Sang Chol Lee, Wook Sung Kim, Young Tak Lee
BACKGROUND: The aim of this study was to compare the long-term hemodynamic performances of Medtronic-Hall (MH) and ATS medical bileaflet (ATS) valves in the aortic position. METHODS: We reviewed 249 patients that underwent AVR using MH or ATS valves between October 1994 and February 2004. MH valves were implanted in 117 patients (the MH group) and ATS valves in 132 patients (the ATS group). Serial changes in echocardiographic findings and clinical outcomes were analyzed...
July 1, 2013: International Journal of Cardiology
https://www.readbyqxmd.com/read/20583405/thrombocytopenia-after-aortic-valve-replacement-comparison-between-mechanical-and-biological-valves
#12
COMPARATIVE STUDY
Albert H M van Straten, Mohamed A Soliman Hamad, Eric Berreklouw, Joost F ter Woorst, Elisabeth J Martens, M Erwin S H Tan
BACKGROUND AND AIM OF THE STUDY: Concerns have been recently raised regarding the postoperative decrease in platelet count after aortic valve replacement (AVR). Thus, a retrospective analysis was conducted of patients after AVR with regards to postoperative platelet count. METHODS: The data were analyzed from all patients undergoing AVR with (n = 829) or without (n = 1,230) coronary artery bypass grafting (CABG) at a single center between January 1998 and May 2009...
May 2010: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/18980093/are-sounds-from-mechanical-heart-valves-equal-for-different-valve-types
#13
COMPARATIVE STUDY
Thais A L Pedersen, Peter Johansen, J Michael Hasenkam, Reiner Koerfer, Heinrich Koertke, Hans Nygaard
BACKGROUND AND AIM OF THE STUDY: The closing 'click' sounds from mechanical heart valve prostheses are often clearly audible for patients and their relatives. These sounds have been recognized as a disturbing factor causing sleeping disturbances or social embarrassment, which patients must endure for the rest of their lives. The study aim was to determine whether the intensity of the transmitted sounds varies according to the type of valve implanted. METHODS: Closing sounds were measured from 15 patients with ATS valves, 29 with Medtronic-Hall valves, and 40 with St...
September 2008: Journal of Heart Valve Disease
https://www.readbyqxmd.com/read/15721496/comparison-of-transprosthetic-mean-pressure-gradients-between-medtronic-hall-and-ats-valves-in-the-aortic-position
#14
COMPARATIVE STUDY
Kiick Sung, Pyo Won Park, Kay-Hyun Park, Tae-Gook Jun, Young Tak Lee, Ji-Hyuk Yang
AIM OF THE STUDY: Several studies have shown the inferior performance of small prostheses in the narrow aortic root. However, modern low-profile mechanical prostheses have improved hemodynamic performance characteristics. By measuring the transprosthetic pressure gradient in vivo, we were able to characterize the hemodynamic features of two prostheses: the ATS Medical (ATS) and the Medtronic Hall (MH) valves. METHODS: From October 1994 to April 2002, 113 patients received an aortic valve replacement (AVR) with either an ATS or a MH valve...
March 10, 2005: International Journal of Cardiology
https://www.readbyqxmd.com/read/11699520/pace-termination-and-pacing-for-prevention-of-atrial-tachyarrhythmias-results-from-a-multicenter-study-with-an-implantable-device-for-atrial-therapy
#15
MULTICENTER STUDY
C W Israel, B Hügl, C Unterberg, T Lawo, I Kennis, D Hettrick, S H Hohnloser et al.
INTRODUCTION: Patients with bradycardia requiring permanent pacing frequently suffer from additional atrial tachyarrhythmias (ATs). This study evaluated the safety and efficacy of atrial antitachycardia pacing (ATP) and the performance of pacing for AT prevention implemented into a new pacemaker. METHODS AND RESULTS: In patients with conventional indications for permanent pacing, an investigational DDDRP pacemaker (Medtronic AT500, model 7253) was implanted. The primary study objectives were to determine the safety of overall device functioning and its efficacy in terminating spontaneous AT...
October 2001: Journal of Cardiovascular Electrophysiology
https://www.readbyqxmd.com/read/9445343/clinical-correlations-of-doppler-microembolic-signals-in-patients-with-prosthetic-cardiac-valves-analysis-of-580-cases
#16
U Sliwka, D Georgiadis
BACKGROUND: The clinical relevance of Doppler microembolic signals (MES) in patients with prosthetic cardiac valves was evaluated by merging and statistically reanalyzing patient data from four research institutions (Departments of Neurology, Universities of Aachen, Halle, and Münster, Germany; Department of Medicine and Therapeutics, University of Glasgow, Scotland, and Department of Cardiothoracic Surgery, Western Infirmary, Glasgow, Scotland). METHODS: Transcranial Doppler monitoring for MES was performed over the middle cerebral arteries for 30 to 60 minutes per patient...
January 1998: Stroke; a Journal of Cerebral Circulation
https://www.readbyqxmd.com/read/9423945/pulse-duplicator-hydrodynamics-of-four-different-bileaflet-valves-in-the-mitral-position
#17
P R Verdonck, G J Van Nooten, Y Van Belleghem
The hydrodynamic performance of four different types of bileaflet heart valve was tested both in steady flow conditions and in a newly designed computerized artificial left heart system. Four 29-mm valves, manufactured by either St. Jude Medical, CarboMedics, ATS Medical or Medtronic Parallel were studied under a steady state and in pulsatile conditions by pressure and flow recording and colour Doppler echocardiography in the 'mitral position' at rest and at exercise (cardiac output range 4-30 l/Min). In the steady state, significant differences were measured at peak flows of 30 l/min, with mean (s...
December 1997: Cardiovascular Surgery: Official Journal of the International Society for Cardiovascular Surgery
https://www.readbyqxmd.com/read/8740061/transcranial-doppler-detection-of-microemboli-in-prosthetic-heart-valve-patients-dependency-upon-valve-type
#18
D Georgiadis, M Kaps, J Berg, T G Mackay, F Dapper, A Faichney, D J Wheatley, K R Lees
Transcranial Doppler ultrasound has revealed the existence of cerebrovascular microemboli in asymptomatic patients with prosthetic heart valves. We investigated the relation between the presence and number of emboli signals and valve type. Patients with six types of prosthetic valves (Björk-Shiley monostrut, Medtronic-Hall, Carbomedics, ATS, Carpentier-Edwards standard, Carpentier-Edwards supraannular) were examined using transcranial Doppler ultrasound in two centers. The monitoring time was 30 min over the right middle cerebral artery...
1996: European Journal of Cardio-thoracic Surgery
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