Bioprosthesis: Prosthesis, usually heart valve, composed of biological material and whose durability depends upon the stability of the material after pretreatment, rather than regeneration by host cell ingrowth. Durability is achieved 1, mechanically by the interposition of a cloth, usually polytetrafluoroethylene, between the host and the graft, and 2, chemically by stabilization of the tissue by intermolecular linking, usually with glutaraldehyde, after removal of antigenic components, or the use of reconstituted and restructured biopolymers.Heart Valve Prosthesis: A device that substitutes for a heart valve. It may be composed of biological material (BIOPROSTHESIS) and/or synthetic material.Heart Valve Prosthesis Implantation: Surgical insertion of synthetic material to repair injured or diseased heart valves.Aortic Valve: The valve between the left ventricle and the ascending aorta which prevents backflow into the left ventricle.Triethylenemelamine: Toxic alkylating agent used in industry; also as antineoplastic and research tool to produce chromosome aberrations and cancers.Aortic Valve Stenosis: A pathological constriction that can occur above (supravalvular stenosis), below (subvalvular stenosis), or at the AORTIC VALVE. It is characterized by restricted outflow from the LEFT VENTRICLE into the AORTA.Prosthesis Design: The plan and delineation of prostheses in general or a specific prosthesis.Prosthesis Failure: Malfunction of implantation shunts, valves, etc., and prosthesis loosening, migration, and breaking.Aortic Valve Insufficiency: Pathological condition characterized by the backflow of blood from the ASCENDING AORTA back into the LEFT VENTRICLE, leading to regurgitation. It is caused by diseases of the AORTIC VALVE or its surrounding tissue (aortic root).Prosthesis Fitting: The fitting and adjusting of artificial parts of the body. (From Stedman's, 26th ed)Reoperation: A repeat operation for the same condition in the same patient due to disease progression or recurrence, or as followup to failed previous surgery.Heart Valve Diseases: Pathological conditions involving any of the various HEART VALVES and the associated structures (PAPILLARY MUSCLES and CHORDAE TENDINEAE).Anatomic Landmarks: Reference points located by visual inspection, palpation, or computer assistance, that are useful in localizing structures on or within the human body.Mitral Valve: The valve between the left atrium and left ventricle of the heart.Device Removal: Removal of an implanted therapeutic or prosthetic device.Abortion, Septic: Any type of abortion, induced or spontaneous, that is associated with infection of the UTERUS and its appendages. It is characterized by FEVER, uterine tenderness, and foul discharge.Tricuspid Valve: The valve consisting of three cusps situated between the right atrium and right ventricle of the heart.Pericardium: A conical fibro-serous sac surrounding the HEART and the roots of the great vessels (AORTA; VENAE CAVAE; PULMONARY ARTERY). Pericardium consists of two sacs: the outer fibrous pericardium and the inner serous pericardium. The latter consists of an outer parietal layer facing the fibrous pericardium, and an inner visceral layer (epicardium) resting next to the heart, and a pericardial cavity between these two layers.Cardiac Catheterization: Procedures in which placement of CARDIAC CATHETERS is performed for therapeutic or diagnostic procedures.Treatment Outcome: Evaluation undertaken to assess the results or consequences of management and procedures used in combating disease in order to determine the efficacy, effectiveness, safety, and practicability of these interventions in individual cases or series.Tricuspid Valve Insufficiency: Backflow of blood from the RIGHT VENTRICLE into the RIGHT ATRIUM due to imperfect closure of the TRICUSPID VALVE.Calcinosis: Pathologic deposition of calcium salts in tissues.Echocardiography, Transesophageal: Ultrasonic recording of the size, motion, and composition of the heart and surrounding tissues using a transducer placed in the esophagus.Endocarditis, Bacterial: Inflammation of the ENDOCARDIUM caused by BACTERIA that entered the bloodstream. The strains of bacteria vary with predisposing factors, such as CONGENITAL HEART DEFECTS; HEART VALVE DISEASES; HEART VALVE PROSTHESIS IMPLANTATION; or intravenous drug use.Postoperative Complications: Pathologic processes that affect patients after a surgical procedure. They may or may not be related to the disease for which the surgery was done, and they may or may not be direct results of the surgery.Mitral Valve Insufficiency: Backflow of blood from the LEFT VENTRICLE into the LEFT ATRIUM due to imperfect closure of the MITRAL VALVE. This can lead to mitral valve regurgitation.Echocardiography, Three-Dimensional: Echocardiography amplified by the addition of depth to the conventional two-dimensional ECHOCARDIOGRAPHY visualizing only the length and width of the heart. Three-dimensional ultrasound imaging was first described in 1961 but its application to echocardiography did not take place until 1974. (Mayo Clin Proc 1993;68:221-40)Prosthesis-Related Infections: Infections resulting from the implantation of prosthetic devices. The infections may be acquired from intraoperative contamination (early) or hematogenously acquired from other sites (late).Time Factors: Elements of limited time intervals, contributing to particular results or situations.Thromboembolism: Obstruction of a blood vessel (embolism) by a blood clot (THROMBUS) in the blood stream.Hospital Mortality: A vital statistic measuring or recording the rate of death from any cause in hospitalized populations.Hemodynamics: The movement and the forces involved in the movement of the blood through the CARDIOVASCULAR SYSTEM.ElastinGlutaral: One of the protein CROSS-LINKING REAGENTS that is used as a disinfectant for sterilization of heat-sensitive equipment and as a laboratory reagent, especially as a fixative.Illusions: The misinterpretation of a real external, sensory experience.Patents as Topic: Exclusive legal rights or privileges applied to inventions, plants, etc.Thrombosis: Formation and development of a thrombus or blood clot in the blood vessel.Aortic Valve Prolapse: The downward displacement of the cuspal or pointed end of the trileaflet AORTIC VALVE causing misalignment of the cusps. Severe valve distortion can cause leakage and allow the backflow of blood from the ASCENDING AORTA back into the LEFT VENTRICLE, leading to aortic regurgitation.Sexual Partners: Married or single individuals who share sexual relations.Product Labeling: Use of written, printed, or graphic materials upon or accompanying a product or its container or wrapper. It includes purpose, effect, description, directions, hazards, warnings, and other relevant information.Safety: Freedom from exposure to danger and protection from the occurrence or risk of injury or loss. It suggests optimal precautions in the workplace, on the street, in the home, etc., and includes personal safety as well as the safety of property.Sexual Behavior: Sexual activities of humans.Unsafe Sex: Sexual behaviors which are high-risk for contracting SEXUALLY TRANSMITTED DISEASES or for producing PREGNANCY.Condoms: A sheath that is worn over the penis during sexual behavior in order to prevent pregnancy or spread of sexually transmitted disease.Risk-Taking: Undertaking a task involving a challenge for achievement or a desirable goal in which there is a lack of certainty or a fear of failure. It may also include the exhibiting of certain behaviors whose outcomes may present a risk to the individual or to those associated with him or her.Atrial Fibrillation: Abnormal cardiac rhythm that is characterized by rapid, uncoordinated firing of electrical impulses in the upper chambers of the heart (HEART ATRIA). In such case, blood cannot be effectively pumped into the lower chambers of the heart (HEART VENTRICLES). It is caused by abnormal impulse generation.Atrial Appendage: Ear-shaped appendage of either atrium of the heart. (Dorland, 28th ed)Thoracic Surgical Procedures: Surgery performed on the thoracic organs, most commonly the lungs and the heart.Thoracic Surgery: A surgical specialty concerned with diagnosis and treatment of disorders of the heart, lungs, and esophagus. Two major types of thoracic surgery are classified as pulmonary and cardiovascular.Cardiac Surgical Procedures: Surgery performed on the heart.Cardiopulmonary Bypass: Diversion of the flow of blood from the entrance of the right atrium directly to the aorta (or femoral artery) via an oxygenator thus bypassing both the heart and lungs.Stroke: A group of pathological conditions characterized by sudden, non-convulsive loss of neurological function due to BRAIN ISCHEMIA or INTRACRANIAL HEMORRHAGES. Stroke is classified by the type of tissue NECROSIS, such as the anatomic location, vasculature involved, etiology, age of the affected individual, and hemorrhagic vs. non-hemorrhagic nature. (From Adams et al., Principles of Neurology, 6th ed, pp777-810)

Destructive aortic valve endocarditis from Brucella abortus: survival with emergency aortic valve replacement. (1/643)

Brucella abortus infection of the aortic valve caused acute aortic regurgitation leading to severe left ventricular failure in a 62-year-old man. He made an excellent recovery after emergency aortic valve replacement. This is the third reported case of successful heart valve replacement for Brucella endocarditis and the second such case involving the aortic valve.  (+info)

Long-term survival and valve-related complications in young women with cardiac valve replacements. (2/643)

BACKGROUND: The type of cardiac valve replacement associated with the lowest health risks for young women who may undergo pregnancies is unknown. We investigated which valve type was associated with greatest patient and valve survival and the effect of pregnancy on valve loss. METHODS AND RESULTS: In this retrospective study, all women 12 to 35 years old who underwent valve replacements between 1972 and 1992 at Greenlane Hospital were identified, and follow-up was available in 93%. The 232 women were followed up for 1499 patient-years. Ten-year survival of women with mechanical (n=178), bioprosthetic (n=73), and homograft (n=72) valves was 70% (95% CI, 59% to 83%), 84% (95% CI, 72% to 99%), and 96% (95% CI, 91% to 100%), P=0.002. After adjustment for confounding variables, the relative risk (RR) of death with mechanical compared with bioprosthetic valves was 2.17 (95% CI, 0.78 to 5.88). Thromboembolic events occurred in 45% of women with mechanical valves within 5 years, compared with 13% with bioprosthetic valves, P=0.0001. Valve loss at 10 years was higher in bioprosthetic valves [82% (95% CI, 62% to 92%)] than in mechanical [29% (95% CI, 17% to 39%)] or homograft [28% (95% CI, 12% to 41%)] valves, P=0.0001. Pregnancy was not associated with increased bioprosthetic (RR, 0.96; 95% CI, 0.68 to 1. 35), homograft (RR, 0.65; 95% CI, 0.37 to 1.13), or mechanical (RR, 0.54; 95% CI, 0.27 to 1.08) valve loss. CONCLUSIONS: Although 10-year valve survival was greater with mechanical than bioprosthetic valves, mechanical valves may be associated with reduced patient survival in young women. Thromboembolic complications, often with long-term sequelae, were common with mechanical valves. Pregnancy did not increase structural deterioration or reduce survival of bioprosthetic valves.  (+info)

Haemodynamic performance of aortic pericardial bioprostheses and bileaflet prostheses at rest and during exercise: implications for the surgical management of patients with small aortic roots. (3/643)

OBJECTIVE: To determine the haemodynamic behaviour, at rest and during exercise, of aortic valve pericardial bioprostheses and different sizes of bileaflet prosthesis. DESIGN: Observational study. SETTING: Tertiary medical centre. PATIENTS AND INTERVENTIONS: 74 patients (33 women, 41 men; mean age 64 years) in whom 40 pericardial bioprostheses and 34 bileaflet prostheses sized 19, 21, or 23 mm had been implanted to replace aortic valves. MAIN OUTCOME MEASURES: Doppler echocardiography at rest and at peak exercise, between 12 and 47 months after surgery. RESULTS: All patients achieved a significant increase in heart rate, systolic blood pressure, and cardiac output with exercise. Transvalvar pressure fall, valve area, and left ventricular systolic and diastolic function indices also underwent significant changes with exercise. Reductions in peak and mean transvalvar pressure, at rest and at peak exercise, were greater in patients with small valves (p < 0.05). Valve areas and effective area index were greater in the patients with larger valves (p < 0.001). There were no significant differences between patients with mechanical and biological prostheses with regard to transvalvar pressure fall and valve areas at rest and at peak exercise. CONCLUSIONS: 19 mm and 21 mm aortic prostheses and bioprostheses continue to create significant obstruction, particularly with exercise.  (+info)

The use of a stentless porcine bioprosthesis to repair an ascending aortic aneurysm in combination with aortic valve regurgitation. (4/643)

Over the years, many surgical methods have evolved for the treatment of ascending aortic aneurysm in combination with aortic valve regurgitation; however, precise guidelines for optimal surgical techniques for varying presentations have not been defined. We describe the use of a stentless porcine bioprosthesis (Medtronic Freestyle) in a patient with an ascending aortic aneurysm and aortic regurgitation. We used the complete root replacement method, and anastomosed a Dacron graft (Hemashield) between the bioprosthetic valve and the native aorta to replace the distal part of the aneurysm.  (+info)

Hemodynamic and physical performance during maximal exercise in patients with an aortic bioprosthetic valve: comparison of stentless versus stented bioprostheses. (5/643)

OBJECTIVES: The objective of this study was to compare stentless bioprostheses with stented bioprostheses with regard to their hemodynamic behavior during exercise. BACKGROUND: Stentless aortic bioprostheses have better hemodynamic performances at rest than stented bioprostheses, but very few comparisons were performed during exercise. METHODS: Thirty-eight patients with normally functioning stentless (n = 19) or stented (n = 19) bioprostheses were submitted to a maximal ramp upright bicycle exercise test. Valve effective orifice area and mean transvalvular pressure gradient at rest and during peak exercise were successfully measured using Doppler echocardiography in 30 of the 38 patients. RESULTS: At peak exercise, the mean gradient increased significantly less in stentless than in stented bioprostheses (+5 +/- 3 vs. +12 +/- 8 mm Hg; p = 0.002) despite similar increases in mean flow rates (+137 +/- 58 vs. +125 +/- 65 ml/s; p = 0.58); valve area also increased but with no significant difference between groups. Despite this hemodynamic difference, exercise capacity was not significantly different, but left ventricular (LV) mass and function were closer to normal in stentless bioprostheses. Overall, there was a strong inverse relation between the mean gradient during peak exercise and the indexed valve area at rest (r = 0.90). CONCLUSIONS: Hemodynamics during exercise are better in stentless than stented bioprostheses due to the larger resting indexed valve area of stentless bioprostheses. This is associated with beneficial effects with regard to LV mass and function. The relation found between the resting indexed valve area and the gradient during exercise can be used to project the hemodynamic behavior of these bioprostheses at the time of operation. It should thus be useful to select the optimal prosthesis given the patient's body surface area and level of physical activity.  (+info)

Valve replacement for aortic stenosis in patients with poor left ventricular function: comparison of early changes with stented and stentless valves. (6/643)

BACKGROUND: Long-standing aortic stenosis causes significant left ventricular (LV) dysfunction, which may progress irreversibly. In many cases, LV function can be salvaged by aortic valve surgery, although debate exists regarding the best valve prosthesis to use. METHODS AND RESULTS: We studied 33 patients retrospectively who had significant aortic stenosis and impaired LV systolic function, as assessed by transthoracic Doppler echocardiography. Patients were assessed preoperatively and before discharge from the hospital. A total of 20 patients received a stentless (homograft or Toronto) valve, and 13, a stented valve. No patient had significant aortic regurgitation or other valvular disease. Preoperatively, fractional shortening was 18.8+/-5.5% in the stentless group and 18.6+/-3.8% in the stented group. Postoperatively, it was 25.6+/-6.9% (P<0.001 compared with baseline) and 17.0+/-2.8%, respectively (P<0.001 compared with stentless group). Fractional shortening improved because of a reduction in LV end-systolic and end-diastolic dimensions in the stentless group. Systolic long axis function at the LV free wall also recovered, with an increase in systolic excursion and both peak shortening and lengthening rates. No change was noted in mitral valve Doppler patterns. CONCLUSIONS: Patients who received a stentless valve demonstrated a significantly greater early improvement in LV systolic function compared with those who received a stented valve.  (+info)

Prospectively randomized evaluation of stentless versus conventional biological aortic valves: impact on early regression of left ventricular hypertrophy. (7/643)

BACKGROUND: The aim of this prospectively randomized study was to evaluate left ventricular hypertrophy and its regression after stentless versus conventional biological aortic valve replacement. METHODS AND RESULTS: From March 1996 through April 1998, 180 patients were prospectively selected; 106 patients received a stentless aortic valve (SAV), and 74 received a conventional stented bioprosthesis (CSB). Of these patients, 95% and 96%, respectively, had aortic stenosis. Their mean age was 72.3 and 74.8 years, and there were no significant differences in left ventricular function, preoperative pressure gradients, and NYHA functional status. Aortic annulus diameter indexes were comparable at 13.46 (SAV) versus 13.55 (CSB) mm (P=NS). Larger SAVs were implanted because of the oversizing technique. In-hospital mortality (n=3 and 1 for SAV and CSB) was not valve related. At follow-up, all patients were in NYHA class 1 or 2. Baseline end-diastolic left ventricular posterior wall thickness was 15.6 (SAV) and 14.8(CSB) mm (P=NS) and decreased to 11. 8 (SAV) and 13.2 (CSB) mm (P<0.05) at 6 months. Left ventricular mass index was 213 and 202 g/m(2) at baseline (P=NS), whereas after 6 months, it was 141 (SAV) and 170 (CSB) g/m(2) (P<0.05). CONCLUSIONS: Regression of left ventricular hypertrophy occurs in all patients after aortic valve replacement but is significantly enhanced after SAV implantation. This possibly is due to improved transvalvular hemodynamics.  (+info)

Mid-term comparative follow-up after aortic valve replacement with Carpentier-Edwards and Pericarbon pericardial prostheses. (8/643)

BACKGROUND: The first generation of pericardial valves had a high rate of premature deterioration. The aim of this study was to compare the outcome after aortic valve replacement with second generation pericardial prostheses (Pericarbon and Carpentier-Edwards). METHODS AND RESULTS: Between 1987 and 1994, 162 patients underwent aortic valve replacement with either a Pericarbon (n=81, 69+/-11 years) or a Carpentier-Edwards (n=81, 70+/-11 years) pericardial prosthesis. Mean follow-up was 4.4+/-2.7 years for Pericarbon and 4.8+/-2.4 years for Carpentier-Edwards valves (P=0. 27), giving a total follow-up of 745 patient-years. Thirty-day mortality and 5-year actuarial survival were, respectively, 6.2% and 63.2+/-5.7% in the Pericarbon group and 6.2% and 63.5+/-5.6% in the Carpentier-Edwards group. At 8 years, freedom from (and linearized rates per patient-year) thromboembolism, structural failure, and all valve-related events were, respectively, 91.8+/-3.6% (1.4%), 76. 9+/-8.7% (2.5%), and 58.4+/-9.3% (5.6%) in the Pericarbon group and 94.4+/-2.7% (1%), 100% (0%, P<0.01), and 88.8+/-3.7% (2%, P<0.05) in the Carpentier-Edwards group. There were 9 (11.1%) Pericarbon structural failures related predominantly to severe calcification and stenosis. The actual reoperation rate was 7.4% (1.6% per patient-year) in the Pericarbon group for fibrocalcific degeneration (n=3), periprosthetic leak (n=1), endocarditis (n=1), and aortic dissection (n=1). There was neither structural valve failure nor valve reoperation in the Carpentier-Edwards group. Echocardiographic review of 70 patients from 85 survivors (82.3%) found 4 additional Pericarbon valves with signs of early structural failure but no Carpentier-Edwards valve with such changes. CONCLUSIONS: Eight years after aortic valve replacement, Pericarbon pericardial prostheses compared unfavorably with Carpentier-Edwards pericardial prostheses, with a high incidence of structural valve failure and reoperation.  (+info)

*Transapical transcatheter mitral valve implantation of the Tiara bio-prosthesis

Since the trials are very recent, the long-term effects of this mitral valve bio-prosthesis in humans are currently unknown. ... October 2012). "Tiara: a novel catheter-based mitral valve bioprosthesis: initial experiments and short-term pre-clinical ... February 2014). "Transapical mitral implantation of the Tiara bioprosthesis: pre-clinical results". JACC. Cardiovascular ...

*Artificial heart valve

To easily remove the old replaceable bioprostheses, its "stent" can be sectioned to dismount its framework and so facilitate ... bioprostheses or "tissue valves"), the replaceable models of implantable heart valve prostheses are made by two or three ... "A new bioprosthesis for aortic and mitral valve replacement: Preliminary evaluation of the Tascon valve". Texas Heart Institute ... In vitro study of a recambiavel bioprosthesis]. Revista da Sociedade de Cardiologia do Estado de São Paulo (in Portuguese). 2 ( ...

*Tissuemed

2001). "Midterm evaluation of the Tissuemed (Aspire) porcine bioprosthesis: 493 patients, 506 bioprostheses". The Annals of ... 2003). "Ten year experience with Aspire (Tissuemed) porcine bioprosthesis: single centre experience". Cardiovascular Surgery. ...

*In vitro models for calcification

In this category we find examples such as animal tissue prostheses (xenogeneic bioprosthesis). Xenogeneic heart valves are of ... "In vitro testing of bioprostheses: influence of mechanical stresses and lipids on calcification". The Annals of Thoracic ...

*Pericardial heart valves

Great damage can be inflicted on a bioprosthesis at the time of its implantation. One of the not so rare causes is allowing the ... Watanabe describes a case of an Ionescu-Shiley bioprosthesis which functioned 24years in the mitral position of a patient. The ... Macro and microscopic pathology studies of failed porcine bioprostheses by Schoen and Cohn showed in detail the process of ... Concerning the surgeon: Correct rinsing of the bioprosthesis prior to implantation, maintaining the moistness of the valve ...

*Pfizer

1991). "Twelve-year comparison of a Bjork-Shiley mechanical heart valve with porcine bioprostheses". N Engl J Med. 324 (9): 573 ...

*Tricuspid insufficiency

... bioprostheses may have a degeneration problem). Some evidence suggests that there are no significant differences between a ...

*Valve replacement

... surgery is the replacement of one or more of the heart valves with either an artificial heart valve or a bioprosthesis ( ...

*List of MeSH codes (E07)

... bioprosthesis MeSH E07.695.110 --- blood vessel prosthesis MeSH E07.695.120 --- bone nails MeSH E07.695.125 --- bone plates ...

*Philippine Heart Center

... and developed and implanted the first ASEAN bioprosthesis, the PHCA porcine valve. The first patient to be admitted to the PHC ...

*Marian Ionescu

Carpentier-Edwards Pericardial Bioprosthesis.' This valve is reported to perform better than its predecessor, the original ...
TY - JOUR. T1 - Hemodynamic evaluation of 19-mm Carpentier-Edwards pericardial bioprosthesis in aortic position. AU - Takakura, Hiromitsu. AU - Sasaki, Tatsuumi. AU - Hashimoto, Kazuhiro. AU - Hachiya, Takashi. AU - Onoguchi, Katsuhisa. AU - Oshiumi, Motohiro. AU - Takeuchi, Shigeyuki. PY - 2001. Y1 - 2001. N2 - Background. The aortic Carpentier-Edwards pericardial bioprosthesis offers good long-term clinical outcomes with a low rate of structural deterioration. However, little in vivo hemodynamic data is available for this bioprosthesis. Methods. To determine the hemodynamic performance of the 19-mm Carpentier-Edwards pericardial valve, both cardiac catheterization and dobutamine stress echocardiography were electively performed in 10 patients. The mean age at the study was 71.6 ± 4.4 years and the mean body surface area was 1.39 ± 0.11 m2. The peak-to-peak gradient, instantaneous peak gradient, mean gradient, and valve orifice area were measured by standard cardiac catheterization. The ...
We describe a case of a 76-year old male who presented with progressive dyspnoea. He underwent an aortic valve replacement with a Freedom SOLO bioprosthesis 6 years ago. Transthoracic echocardiography showed a moderate-to-severe leakage of the Freedom SOLO bioprosthesis. During surgical reintervention, a partial tear of the left coronary cusp was seen from the commissure of the right coronary cusp to its base. After radiographic and microscopic examination, no clear cause was found for the failure of this Freedom SOLO bioprosthesis. To our knowledge, this is the third failure of a Freedom SOLO bioprosthesis reported in the literature. When the long-term follow-up of the Freedom SOLO bioprosthesis is available, it has to be compared with other bioprosthesis for long-term durability. ...
TY - JOUR. T1 - Aortic Valve Bioprostheses. T2 - Leaflet Immobility and Valve Thrombosis. AU - Holmes, David. AU - Mack, Michael J.. PY - 2017/5/2. Y1 - 2017/5/2. N2 - Leaflet immobility and valve thrombosis have been reported with both transcatheter and surgical aortic valve bioprostheses. The relationships between these abnormalities and their incidence, time course, clinical significance, predisposing factors, optimal imaging modality, and current therapeutic options remain uncertain but are rapidly evolving. Four-dimensional computerized tomographic imaging has been determined to have the highest sensitivity in studies evaluating leaflet immobility and valve thrombosis. Echocardiography is also used during surveillance, but it appears to be less sensitive. The definitive diagnosis of valve thrombosis is based on a combination of diagnostic 4-dimensional computerized tomographic imaging findings, resolution of imaging abnormalities, and elevated transcatheter gradients with anticoagulation or ...
There has been a trend toward more frequent use of bioprosthetic valves, especially in the young generations, over the last decade.1,2 According to the Society of Thoracic Surgeons database, use of bioprosthetic valve increased from 44% in 1996 to 78% in 2006 in North America.1 Freedom from warfarin use and restrictions on diet and activities make bioprosthetic valves more attractive and popular, and multiple reports have shown that choosing a bioprosthetic valve does not decrease survival despite the increased rate of reoperation.3,4. Article see p 2012. The Mitroflow aortic prosthesis (Sorin Group Inc) is one of the most frequently used bioprostheses, with ,100 000 implanted worldwide.5 The bovine pericardium is mounted externally around the stent, which maximizes the flow relative to the stent size. The valve is placed in the supra-annular position compared with the intra-annular position in some of the other bioprostheses. These characteristics allow superior valve hemodynamics in the ...
Several studies have recognized the high prognostic relevance of achieving an optimal hemodynamic result after aortic valve replacement (1-3,13-16). The presence of severe PPM has been associated with lesser improvement in the functional capacity of the patients (13), lesser regression of LV hypertrophy (14), higher rates of cardiac failure (16), and higher rates of perioperative and long-term mortality (2,3,15,16) after SAVR. The Magna and Freestyle valves are among the most commonly used stented and stentless bioprostheses for SAVR, and the results of valve hemodynamic performance observed in the present study for these 2 types of bioprosthesis were consistent with those of previous studies (17-20), although the aortic annulus and bioprosthesis size were smaller in the present study. Previous studies have also reported that the hemodynamic performance of stentless bioprostheses is generally superior, and accordingly, the prevalence/severity of PPM is lower compared with stented bioprostheses ...
Calcification of glutaraldehyde-preserved bioprosthetic cardiac valves represents a serious clinical problem. Previous work from this laboratory has established the presence in clinical bioprosthetic valve calcifications of vitamin K-dependent calciu
Since the first implant in September 1982, the Medtronic Hancock® II has provided more than 20 years of excellent hemodynamic performance and durability. Design improvements over the past generations include: low profile, flexible stent, Supra-X™ supra-annular placement, T6 anti-calcification tissue treatment, modified fixation process, CINCH® advanced implant system and ULTRA™ minimized sewing ring. Valve sizing is a critical consideration in obtaining optimal hemodynamic performance. This is particular true in small aortic roots. A critical issue is the size of the prosthesis in relation to the patients annulus.. The objective of this clinical study is to evaluate, at six and twelve months, the hemodynamic performance of the HancockÒ Ultra™ bioprosthesis in the aortic position, to analyze the incidence of patient prosthesis mismatch, correlation of gradients, and to ascertain frequency at which a larger valve size is used vs. a patients debrided annulus diameter. ...
Health,...MINNEAPOLIS Nov. 24 /- ATS Medical Inc.(Nas... (Logo: a href http://www.newscom.com/cgi-bin/prnh/20040202/ATSI... The ATS 3f Aortic Bioprosthesis is the Companys first entry into ... The ATS 3f Aortic Bioprosthesis is the only tissue valve that pre...,ATS,Medical,Announces,First,Commercial,Implants,of,the,ATS,3f,Aortic,Bioprosthesis,in,the,United,States,medicine,medical news today,latest medical news,medical newsletters,current medical news,latest medicine news
Between May 1st 1985 and December 31st 1992, 283 Carpentier-Edwards pericardial valves were implanted in 260 patients in the aortic (n = 196), mitral (n = 41) and both aortic and mitral (n = 23) positions at the Gasthuisberg University Hospital in Leuven, Belgium. Patients undergoing tricuspid valve replacement or mixed replacement with another type of prosthesis were excluded from this study. The mean age was 70 +/- 7 years, there were 121 males and 139 females. The mean follow up was 40.55 months, the total follow up experience 10543 months (878.6 patients years). Hospital mortality was 10.4%, and was not significantly related to the position of the valve: 17.3% +/- 7.88% (n = 23) for double valve replacement, 10.2% +/- 2.16% (n = 196) for aortic valve replacement and 7.3% +/- 4.06% (n = 41) for mitral valve replacement. Hospital mortality was 14.1% +/- 3.27% for those with and 7.48% +/- 2.5% for those without concomitant coronary surgery (p = NS). Survival at 92 months was 63% +/- 6% and was ...
A bioprosthetic heart valve comprising leaflets with free edges which do not impinge on adjacent leaflets when the leaflets are closed before being implanted and subject to body fluids and cardiac pressure cycles. Commissures supporting the leaflets have semi-permeable membranes which reduce the pressure load on the leaflets during implantation. In response to immersion in body fluids, the membranes become substantially impermeable. The leaflets can stretch in response to loads and hydration, so that the free edges mate shortly after implantation. First and second mechanisms for supporting leaflets to provide multiple effective spring constants. An inner frame supporting commissures of the valve is elastic, permitting the commissures to bend in toward the center of the prosthetic heart valve at very low loads. A relatively rigid annular support ring supports the elastic frame and provides the second spring constant mechanism. The leaflets have an uncoupled mating edge where the leaflet approach each
Transcatheter heart valve in valve implantation with Edwards SAPIEN bioprosthetic valve for different degenerated bioprosthetic valve positions (First Iranian ViV report with mid-term follow up) ...
A packaging system is disclosed for shipping a prosthetic tissue valve in a storage solution and preparing and loading of the bioprosthetic valve onto a catheter-based delivery system. The packaging system includes a fluid tight container filled with the storage solution attached to a delivery catheter, wherein the container surrounds the prosthetic tissue valve that is in a pre-loaded position on the delivery catheter during shipment and storage. The prosthetic tissue valve may include an attachment mechanism that attaches to the delivery catheter to properly position the tissue valve for loading within the delivery catheter. In another embodiment where the prosthetic tissue valve is not attached to the delivery catheter during shipment, the attachment mechanism may interact with the prosthetic tissue valve shipping container to prevent the bioprosthetic valve from moving during shipment.
The VIV procedure is technically demanding and should be reserved for highly experienced centers. Operators should be skilled in the handling of device malposition, retrieval techniques, and implantation of a second TAVR device, if needed. During screening, the Heart Team must have all of the information about and be familiar with the particular characteristics of the surgical bioprosthesis: the mode of degeneration and echocardiographic parameters (isolated paravalvular regurgitation should be excluded); valve size (most importantly, bioprosthesis internal diameter should be used for TAVR device and size selection; because of better hemodynamic results, CoreValve may be preferred in cases of small bioprosthesis with internal diameter ,20 mm); valve position (intra-annular versus supra-annular); valve type (stented versus stentless); the relation of the bioprosthetic valve to its radio-opaque markers; and the risk for coronary obstruction when VIV is performed inside that specific ...
The valve-in-valve concept is an emerging therapeutic option for patients with degenerative failure of previously implanted xenografts. Reoperation of degenerated bioprostheses has a high mortality risk that increases with the age and associated comorbidities of the patients. The transcatheter valve-in-valve implantation does not need resternotomy or cardiopulmonary bypass, potentially reducing the morbidity and mortality risk. However, unlike the transcatheter implants in native valves, in the valve-in-valve procedures, the leaflets and calcified annulus are replaced with the rigid annulus of the xenograft. This requires accurate sizing of the transcatheter valve, currently available in 2 sizes. Therefore, 3-dimensional imaging techniques, particularly multi-detector row computed tomography (MDCT), may provide a more exact sizing of the host xenograft ring. We report a mitral valve-in-valve procedure in a 79-year-old female patient with previous aortic and mitral valve replacement (a 21-mm and ...
A new study has found that in patients with failed bioprosthetic aortic valves who underwent transcatheter valve-in-valve implantation, the survival rate was only 83 percent
Bioprosthetic valves are increasingly used in preference to mechanical valves in open SAVR, as lifelong oral anticoagulation is not required and its attendant complications can be avoided. A recent study has shown similar long-term survival rates in patients with bioprosthetic and mechanical valves. However, patients with bioprosthetic valves require reoperations due to their limited durability and expected degeneration;(12) those undergoing such reoperations face increased surgical risk due to their more advanced age (compared with their age during the index SAVR) during the redo surgery and scarring in the non-virgin chest. Consequently, valve-in-valve TAVI appears to be an attractive, minimally invasive method of replacing the degenerated surgical aortic bioprosthesis without the need for a reoperation. Several small case series and a global registry have shown that it is a feasible and viable option for patients at high risk.(5-9). In our initial Asian experience of valve-in-valve TAVI in ...
Methods and results Preoperative echocardiography and dobutamine stress echocardiography at 1 year postoperatively were undertaken in 106 patients (n=18-24 from each group). Stentless bioprostheses, whether porcine or bovine, displayed superior haemodynamics across nearly all echocardiographic parameters: lower gradients, larger effective orifice area, higher dimensionless severity index (DSI) and lower resistance, when compared with stented or mechanical prostheses. Comparing both stented designs, bovine tissue performed the worst at rest, but with stress, there was no difference. The stress performances of the stentless bioprostheses were similar to the mildly stenosed native aortic valve, whereas the performances of the stented and mechanical prostheses resembled that of native valves with mild-to-moderate stenoses. Haemodynamic differences, however, did not translate into differences in left ventricular mass reduction at 1 year.. ...
Sorin Group (Milan, Italy) has been awarded CE mark approval for the Solo Smart, a stentless aortic valve implant. Like its predecessor, the Freedom Solo v
Surgical Bailout Therapy after Implantation of a Medtronic CoreValve Bioprosthesis. . Biblioteca virtual para leer y descargar libros, documentos, trabajos y tesis universitarias en PDF. Material universiario, documentación y tareas realizadas por universitarios en nuestra biblioteca. Para descargar gratis y para leer online.
When facing heart valve replacement surgery, its important to understand the available options. Check out this blog post to learn more!
A biomaterial useful for bioprostheses such as bioprosthetic heart valves is provided in which the fixed tissue has improved elastic properties. The high elastin-containing biomaterial is further characterized by having anisotropic properties wherein the biological material has a greater stiffness in one direction and a greater elasticity in a cross direction. For instance, the biological material has an elastin content of about 30% by weight. In one embodiment, the biological material is vena cava tissue.
Results In patients with VHD, rivaroxaban was associated with more ICH and major bleeding than other NOACs, while edoxaban 30 mg was associated with least major bleeding. Data combining all NOACs showed a significant reduction in SSE, MI and ICH (0.70, [0.57 to 0.85; p,0.001]; 0.70 [0.50 to 0.99; p,0.002]; and 0.46 [0.24 to 0.86; p,0.01], respectively). Analysis of 280 patients with AF and a BPHV showed similar outcomes with NOACs and warfarin. ...
Disclosed is a controlled autolysis method for making biological tissue substantially acellular by exposing the biological material, prior to any fixation thereof, to at least one buffered solution having a pH in the range from about 5.0 to 8.0 and a temperature in the range from about 12 C. to 30 C. for a sufficient period of time to render at least one region of the biological material substantially acellular while substantially preserving the structural integrity and non-cellular structural components of the biological material. Also disclosed is a method of making a bioprosthetic heart valve using biological material that has been treated by controlled autolysis and a method of treating a mammal having a defective heart valve using a bioprosthetic heart valve made, in part, by controlled autolysis.
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Mayos structural heart team provides comprehensive care to patients who have previously undergone surgery to replace the mitral or tricuspid valve with a tissue bioprosthesis. Existing dysfunctional bioprosthetic valves can be
Brief summary: aortic bioprostheses. Indications: For use in patients whose aortic valvular disease warrants replacement of their natural or previously placed prosthetic valve.. Contraindications: Do not use if surgeon believes it would be contrary to the patients best interests.. Complications and side effects: Stenosis, regurgitation, endocarditis, hemolysis, thromboembolism, valve thrombosis, nonstructural dysfunction, structural valve deterioration, anemia, arrhythmia, hemorrhage, transient ischemic attack/stroke, congestive heart failure, myocardial infarction, angina, any of which could lead to reoperation, explantation, permanent disability, and death.. Warnings: Alternative therapies should be considered in the presence of conditions affecting calcium metabolism or when calcium containing chronic drug therapies are used, including children, adolescents, young adults, and patients on a high calcium diet or maintenance hemodialysis. Should be used with caution in the presence of severe ...
November 27, 2007 - St. Jude Medical Inc. announced FDA approval of its Epic Stented Tissue Valve with Linx AC Technology. The Epic Valve, which is identical in design to the companys Biocor Valve, also incorporates patented anti-calcification technology designed to protect against tissue mineralization, or hardening.. An estimated 100,000 Americans undergo heart valve replacement annually and the majority of them receive tissue valves. Valve durability is affected by both mechanical stress and tissue calcification. The Epic Valve is designed to address both issues to deliver long-term performance.. "The Epic Valve sets a new standard for addressing tissue mineralization and potentially extending long-term valve durability," said Vibhu Kshettry, M.D., director of Cardiac Surgery at the Minneapolis Heart Institute at Abbott Northwestern Hospital, Minneapolis, and a principal investigator in the Epic clinical study. "Enhanced durability, combined with a design that facilitates the implant ...
OBJECTIVES: The aim of this study was to evaluate the hemodynamic performance of a sutureless bioprosthesis under high workload at mid-term follow-up. METHODS: Thirty-two patients who underwent isolated aortic valve replacement with a Perceval sutureless bioprosthesis with a minimum follow-up of 1 year were enrolled in this study. S size prosthesis was deployed in 10 patients (31.3%), M size in 9 (28.1%), L size in 8 (25%) and XL size in 5 (15.6%). Effective orifice area (EOA), EOA index (EOAi), and transvalvular gradients were assessed at rest and during dobutamine stress echocardiography (DSE) a median of 19 ...
A system for treating a vascular condition includes a conduit having an inner wall and at least one locking member positioned within the inner wall of the conduit. The system also includes a stented valve positioned in contact with the locking member within the inner wall of the conduit. A method for treating a vascular condition includes inserting a conduit with a stented valve into a target region of a vessel, positioning a contact portion of the stented valve against a locking portion of the conduit and preventing migration of the stented valve within the conduit based on the positioning.
A system for treating a vascular condition includes a conduit having an inner wall and at least one locking member positioned within the inner wall of the conduit. The system also includes a stented valve positioned in contact with the locking member within the inner wall of the conduit. A method for treating a vascular condition includes inserting a conduit with a stented valve into a target region of a vessel, positioning a contact portion of the stented valve against a locking portion of the conduit and preventing migration of the stented valve within the conduit based on the positioning.
Diagnosis Code T82.223S information, including descriptions, synonyms, code edits, diagnostic related groups, ICD-9 conversion and references to the diseases index.
Diagnosis Code T82.222S information, including descriptions, synonyms, code edits, diagnostic related groups, ICD-9 conversion and references to the diseases index.
We thank Dr. Vavuranakis and colleagues for their interest in our report of "Post-implantation repositioning of the CoreValve percutaneous aortic valve" (1) and for the opportunity to discuss our experience with repositioning techniques of the CoreValve prosthesis (Medtronic Inc., Minneapolis, Minnesota), which was beyond the scope of an Image in Intervention article. At the outset, we would like to state that the best repositioning technique for the CoreValve bioprosthesis is to aim at implanting the valve correctly the first time without having to reposition the valve later. In their letter, Dr. Vavuranakis et al. allude to an important point about implantation of the CoreValve bioprosthesis, which in our opinion is not sufficiently stressed. It has now become routine practice in our institution to post-dilate all CoreValve prostheses that have more than trivial (,1+) aortic regurgitation. In the majority of cases, this additional post-dilation optimizes expansion of the nitinol stent and ...
Early structural deterioration with the mitral Mitroflow pericardial valve requiring reoperation occurred in 6 patients. Clinical diagnosis of prosthetic failure was made 5 to 58 months after valve implantation (mean, 38 months). Re-replacement was c
The stent structure of the present invention would utilize an annular base ring defining an inflow orifice, with at least two circumferentially-spaced posts molded into the annular base ring at one end, and at their upper ends, molded into an upper ring comprising at least bi-segmented parabolic shaped scallops. The posts, which are constructed of spring steel molded in place, would provide the flextral capability necessary to allow relative movement between the scallops of the upper ring and the annular base. The parabolic-shaped segments taken together form a right cylinder of the inside diameter of the valve. The parabolic shape of the scallops reduce stress on the valve cusps.
TY - JOUR. T1 - Facile conversion from mechanical to bioprosthetic composite aortic root replacement. AU - Vricella, Luca. AU - Cameron, Duke E.. PY - 2007/2. Y1 - 2007/2. UR - http://www.scopus.com/inward/record.url?scp=33846343536&partnerID=8YFLogxK. UR - http://www.scopus.com/inward/citedby.url?scp=33846343536&partnerID=8YFLogxK. U2 - 10.1016/j.jtcvs.2006.10.024. DO - 10.1016/j.jtcvs.2006.10.024. M3 - Article. C2 - 17258603. AN - SCOPUS:33846343536. VL - 133. SP - 565. EP - 567. JO - Journal of Thoracic and Cardiovascular Surgery. JF - Journal of Thoracic and Cardiovascular Surgery. SN - 0022-5223. IS - 2. ER - ...
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Tony Hancock, Actor: The Rebel. Tony Hancock was born in Birmingham, England, the son of John and Lillian Hancock. He was educated at Durlston Court, Swanage, and Bradfield College, Reading. He served in the R.A.F. (ground crew) during the war. In 1942 he was in the R.A.F. Gang Show. He was de-mobbed in 1946. He appeared at the Windmill Theatre, London in 1948. His radio show Hancocks Half Hour ran from 1954 - 1959, written ...
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The nursing program at Allan Hancock College has been so fulfilling. I am learning from actual nurses who teach us what they experience in the real world every day. We have the newest equipment and materials to work with in class. I cannot wait to represent Hancock in the work force and help people on their roads to recovery ...
Without a doubt the best part about Hancock College is the relationships you build with a group of like-minded individuals, and growing with that group. I enjoy the positive training environment that is created by the cadre and their efforts to help the cadets. They make the experience inside and outside the classroom fun. I would recommend Allan Hancock College to anyone interested in networking with a wealth of cadets and cadre who know what it takes to do the job. The knowledge you can open yourself up to will put you ahead of the game during your search for a career ...
The talk by Graham Hancock at TEDX elucidates the agenda against conscious awakening that many believe is ennacted through consumerism, media, and big pharma. Hancock makes the argument that modern society blocks the liberation of consciousness by making various psychedelic drugs illegal while instead promoting pharmaceutical drugs that have negative effects on health. He points that exploring our consciousness may very well be a crucial step in changes we must make on the planet if we are to find a way to survive as a species.. This talk was done at a TEDx conference and aired on the TEDx YouTube channel for a period of time before it was removed due to its content.. ...
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Evaluation of the safety of the Perceval S prosthesis in terms of percentage incidence of mortality and morbidity at 3-6 months after ...
Kracskó Bertalan1, Kertész Attila1, Vajda Gusztáv1, Jenei Csaba1, Rácz Ildikó1, Szerafin Tamás2, Szokol Miklós1, Balogh Ágnes1, Csanádi Zoltán1, Bódi Annamária1 ...
Fully functional 3D-printed ovaries have been successfully implanted in mice for the first time - enabling them to have healthy offspring.. A team led by researchers at Northwestern University, Illinois, removed ovaries from female mice and replaced them with bioprosthetic ones that were capable of ovulating. The mice became pregnant naturally and gave birth to pups that thrived with their mothers nursing.. Previous experiments have restored fertility in female mice using egg follicle cells or ovarian tissue implants, but this is the first time a whole synthetic ovary has achieved the same outcome.. Our hope is that one day this ovarian bioprosthesis is really the ovary of the future, said Dr Teresa Woodruff, director of the Womens Health Research Institute at Northwestern Universitys Feinberg School of Medicine, to The Guardian. So far the procedure has only been tested in animals, but scientists hope eventually to be able to restore fertility to women with infertility issues, or who have ...
Newly approved Epic™ stented tissue valves from St. Jude Medical, Inc. are identical in design to the super popular Biocor™ valves, but they al
A stentless support structure capable of being at least partly assembled in situ. The support structure comprises a braided tube that is very flexible and, when elongated, becomes very long and very small in diameter, thereby being capable of placement within a small diameter catheter. The support structure is preferably constructed of one or more thin strands of a super-elastic or shape memory material such as Nitinol. When released from the catheter, the support structure folds itself into a longitudinally compact configuration. The support structure thus gains significant strength as the number of folds increase. This radial strength obviates the need for a support stent. The support structure may include attachment points for a prosthetic valve.
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This is the 2nd talk that I mentioned was censured from TED a while back. It amuses me that I am rarely anymore drawn to TED talks and even more rarely interested or touched by those I view. But when it came to these two censured talks I was 2 for 2.. In this talk Graham Hancock offers a valuable question about consciousness altering drugs. He suggests that such drugs are responsible for our becoming symbolic creatures (a precious claim that deserves much more elaboration). He suggests that by removing them from our lives and culture we have introduced a spiritual detachment which is the source of so much self inflicted destruction and suffering.. It it a very passionate talk, at times to passionate … which earned even more of my respect. It makes a less fluent talk that it could be and required more effort from me … an effort I was happy to put in.. As I watched it a 3rd time in preparation for this post - another train of thought appeared in my consciousness. I have not had access to ...
A Veritas magazine interview with Graham Hancock I was recently interviewed by Brian Creigh of Veritas magazine. He did an excellent job and Veritas have generously allowed me to host a pdf of the full interview as it appears in the magazine on my own website: Download it here. For […]
Our mission is to develop life-enhancing bioprosthetic devices intended to achieve unparalleled outcomes for patients with cardiovascular diseases.
Learn how to stop being just a patient and become a healthcare partner. When you work with your doctor to stay well, it brings out the best in both of you.
We are both pleased and honoured to welcome Geoff Stray as March 2010 Author of the Month at grahamhancock.com. We hope his insights into the meaning and reality of 2012 spur discussion and understanding for those who explore his evidence and theories. Geoff Stray has been studying the meaning of […]
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The search for the UKs next City of Culture has today officially been launched by the Minister of State for Digital and Culture Matt Hancock.
Karla Johanning, Gregg Hancock, Beate Escher, Adebayo Adekola, Mary Jo Bernhard, Christina Cowan‐Ellsberry, Jeanne Domoradzki, Scott Dyer, Curtis Eickhoff, Michelle Embry, Susan Erhardt, Patrick Fitzsimmons, Marlies Halder, James Hill, Dustin Holden, Rebecca Johnson, Sibylle Rutishauser, Helmut Segner, Irvin Schultz, John ...
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Winter Harbor, Maine, a classic Downeast fishing village in Hancock County, with a year-round population of fewer than 1,000, is a small town with true coastal Maine appeal.
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Type : Documentaire Site du film : California dream 3D Caméras : SI-2K de P+S Technic Enregistreur : Cinedec Objectifs : DigiZoom 6-24mm T1.9 RIG : Freestyle de P+S Technic (designé par Philippe Bordelais)   Les SI-2K ont ...
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TY - JOUR. T1 - Bioprosthetic mitral valve thrombosis complicating antiphospholipid antibody syndrome, successfully treated with thrombolysis. AU - Chamsi-Pasha, Mohammed A.. AU - Alyousef, Tareq. AU - Sayyed, Samer H. PY - 2014/1/1. Y1 - 2014/1/1. N2 - The incidence of bioprosthetic valve thrombosis and related embolic complications is extremely rare, obviating the need for long-term anticoagulation. As a result, experience in the diagnosis and treatment of bioprosthetic valve thrombosis is fairly limited. We report the first case of antiphospholipid antibody syndrome presenting as bioprosthetic mitral valve thrombosis, 15 months after valve replacement, and successfully treated with thrombolytic therapy. (Echocardiography 2014;31:E278-E281).. AB - The incidence of bioprosthetic valve thrombosis and related embolic complications is extremely rare, obviating the need for long-term anticoagulation. As a result, experience in the diagnosis and treatment of bioprosthetic valve thrombosis is fairly ...
The perfect heart valve substitute has not yet been developed and matching the patient to existing options to optimize survival and reduce valve-related complications remains challenging. The choices for aortic valve replacement (AVR) are mechanical valves, bioprosthetic valves, and biological valves such as aortic valve homograft and the Ross procedure (pulmonary autograft). The latter is a complex operation because it transfers the patients own pulmonary valve into the aortic position and uses a biological valve to replace the pulmonary valve, transforming a single-valve disease into a 2-valve disease. These considerations are not important to most North American patients who undergo AVR because they are older and the durability of bioprosthetic valves in this age group is excellent (1,2). The risk of bioprosthetic valve failure 20 years after AVR is ,10% in patients 70 years of age and older (1,2). A report based on the Society of Thoracic Surgeons Database from January 1997 to December 2006 ...
TY - JOUR. T1 - Do differences in early hemodynamic performance of current generation biologic aortic valves predict outcomes 1 year following surgery?. AU - Thalji, Nassir M.. AU - Suri, Rakesh M.. AU - Michelena, Hector I. AU - Greason, Kevin L.. AU - Dearani, Joseph A.. AU - Daly, Richard C.. AU - Joyce, Lyle D.. AU - Stulak, John M.. AU - Burkhart, Harold M.. AU - Li, Zhuo. AU - Schaff, Hartzell V. PY - 2015. Y1 - 2015. N2 - Objective: Small early postoperative hemodynamic differences were noted in a randomized comparison of 3 current-generation bioprosthetic aortic valves. Whether these differences persist and influence clinical outcomes 1 year following implantation is unknown. Methods: Three hundred adults with severe aortic stenosis undergoing valve replacement were randomized to receive the Epic (St Jude, St Paul, Minn) (n = 99), Magna (Edwards LifeSciences Inc, Irvine, Calif) (n = 100), or Mitroflow (Sorin Biomedica Spa, Saluggio, Italy) (n = 101) bioprostheses. Hemodynamic valve ...
No survival difference was observed between use of mechanical and bioprosthetic mitral valves in patients aged 50-69 years matched by propensity score (actuarial 15-year survival 57.5% [95% confidence interval (CI) 50.5-64.4%] vs. 59.9% [95% CI 54.8-65.0%], hazard ratio [HR] 0.95 [95% CI 0.79-1.15]), or in a subgroup analysis of age by decade. Among patients matched by propensity score, mechanical versus bioprosthetic mitral valve replacement was associated with higher 15-year incidence of stroke (14.0% [95% CI 9.5-18.6%] vs. 6.8% [95% CI 4.5-8.8%], HR 1.62 [95% CI 1.10-2.39]) and bleeding events (14.9% [95% CI 11.0-18.8%] vs. 9.0% [95% CI 6.4-11.5%], HR 1.50 [95% CI 1.05-2.16]), but a lower incidence of reoperation (5.0% [95% CI 3.1-6.9%] vs. 11.1% [95% CI 7.6-14.6%], HR 0.59 [95% CI 0.37-0.94]).. ...
Subclinical leaflet thrombosis occurred frequently in bioprosthetic aortic valves, more commonly in transcatheter than in surgical valves. Anticoagulation (both NOACs and warfarin), but not dual antiplatelet therapy, was effective in prevention or treatment of subclinical leaflet thrombosis. Subclinical leaflet thrombosis was associated with increased rates of TIAs and strokes or TIAs. Despite excellent outcomes after TAVR with the new-generation valves, prevention and treatment of subclinical leaflet thrombosis might offer a potential opportunity for further improvement in valve haemodynamics and clinical outcomes.. ...
A method is provided for implanting a valve having at least one valve leaflet within the cardiovascular system of a subject. One step of the method includes preparing a substantially dehydrated bioprosthetic valve and then providing an expandable support member having oppositely disposed first and second ends and a main body portion extending between the ends. Next, the substantially dehydrated bioprosthetic valve is attached to the expandable support member so that the substantially dehydrated bioprosthetic valve is operably secured within the main body portion of the expandable support member. The expandable support member is then crimped into a compressed configuration and placed at a desired location within the cardiovascular system of the subject. Either before or after placement at the desired location, fluid or blood re-hydrates the substantially dehydrated bioprosthetic valve.
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0067] In the embodiments described above relative to FIGS. 7 and 8, the tubular valve segments of stented valves of the invention have a ring of pericardial material that is thicker at one or both of its ends where the material is rolled or folded back on itself. This rolled-back material can overlap or cover the edge of the stent, such as to cover the edge of the stent wires, thereby making the edge or edges of the stented valve smoother. Alternatively, the material may be rolled or folded back in such a way that it does not cover the edge of the stent. For example, a folded portion of material can be positioned so that it is adjacent to an end of a stent and/or the folded portion of material can be positioned to face the interior opening or portion of the stent. In any case, the extra thickness of the material can be beneficial to prevent the stented valve from leaking around its perimeter when implanted in a patient. That is, the rolled or folded areas can help to stabilize the stented valve ...
For aortic root replacement in annuloaortic ectasia (AAE), an artificial prosthesis is commonly sutured to the aortic annulus (hemodynamic ventriculoaortic junction). We consecutively had 6 cases of aortic root replacement using anatomic ventriculoaortic junction suture. This anatomic ventriculoaortic junction suture is a simplified and practical method for aortic root replacement in the same way as using stentless bioprostheses or homografts ...
For the foreseeable future, bioprosthetic heart valves (BHV) fabricated from xenograft biomaterials will remain the dominant replacement prosthetic valve design...
In terms of complications, Chhatriwalla said concerns have been raised about injuring the aorta or rupturing the annulus, though so far these have not been seen. Its also possible that BVF might increase the risk of thromboembolic events, though it might be hard to tease out the mechanism by which they occur, he said.. But there are ways to mitigate risks, Chhatriwalla stressed, such as by timing BVF differently.. Some operators favor doing BVF ahead of TAVR, he said. The thought behind this is that the size of the new TAVR valve is selected with the knowledge of whether or not the bioprosthetic valve can be fractured in the first place. "So you fracture the valve first, you have success, and then put in maybe a larger-sized [TAVR] valve as a result," he explained.. But he and others at Saint Lukes prefer doing it after the TAVR device is implanted, Chhatriwalla added. "Our mindset [is] were going to put in the valve size thats warranted, and were going to check the hemodynamics. Then if ...
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AIM: Postoperative renal dysfunction after aortic valve replacement is a serious complication. To minimize its occurrence, risk factors have to be identified, and if possible eliminated. METHODS: Of 1000 consecutive patients, who underwent AVR, a file study was performed chi(2)nd logistic regression analysis were performed to study the effect of 24 preoperative, 7 peroperative and 7 postoperative factors on the occurrence of 30-day postoperative worsening of renal function. RESULTS: Fifty-three patients had a 30-day postoperative decrease of renal function. Nine of these patients died, which is significantly more than the mortality without this complication ( ...
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Hancock county, Ohio Plants Allergy Info for Research - Complete Online Significant Allergens and Plants Reference for Hancock county in Winter
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Turkeys Istanbul International Jazz Festival has landed a pair of firsts - Paul Simon will make his first appearance in the country when he closes the event next month (Jul11) and Herbie Hancock will debut his Tribute To Miles show.The...
The Hancock Inn in Hancock, New Hampshire, is one of the oldest inns in New England and home to the delicious Fox Tavern.  Whether you are skiing at Crotched Mountain or a history buff, this quaint bed and breakfast is a must-see. 
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Portage Health Hospital of Hancock, MI ratings and quality report. Compare Portage Health Hospital to other nearby hospitals in Michigan.
David F. DAlessandro was named president and chief operations officer of John Hancock Mutual Life Insurance. The promotion of the unconventional insurance executive signifies the industrys push to redefine itself.
Vanderbilt-Ingram Cancer Center and the Vanderbilt Institute of Chemical Biology developed out of the work of the Hancock Lab to merit national acclaim for cancer care and translational research that moves discovery from the lab to benefit patients. Today Vanderbilt-Ingram discoveries in cancer genetics are saving lives through precision cancer medicine that precisely targets therapy based on tumor characteristics for patients with melanoma and cancers of the lung, colon and breast. More potent cancer medicines are on the horizon as Vanderbilt-Ingram researchers identify promising candidates by designing novel molecules that effectively inhibit notoriously "undruggable" mutations found commonly in many cancers and drug-resistant tumors. This research could ultimately lead to treatment for many different types of cancer.. These groundbreaking innovations testify to the wonderful impact achieved by a remarkable family and friends working closely with Vanderbilt scientists. Their collective ...
278 ALLAN HANCOCK PACIFIC EXPEDITIONS VOL. 3 D. 138, dredged in 30 m., south of Tiburon Island, near Turners Island, Jan.; D. 347, in 22 m., off Punta Penasco, Feb. This species is distinct from Halymenia abyssicola of this paper in its thinner fronds (70-130 ft), outer cortex of only one or two layers of small cells, and absence of a thick surface jelly. Halymenia ? abyssicola sp. nov. Frondes planae membranaceae, minime 8 cm. latae, 300 [i crassae, marginibus integris, atro-roseae; glutino superficial! 25-35 p, crasso; corticibus stratis paucis cellularum minutarum dense aggregatarum, 5-7 u, diam. compositis; subcorticibus cellulis majoribus compositis; in medulla filamentis laxe intricatis et crabro con- junctiones stellae-formantes ostendentibus; (frondibus fructuosis nondum visis). Fronds plane, membranous, basal parts unknown, at least 8 cm. broad, with an entire margin, 300 ft thick, deep rose colored; cross section showing a thick surface jelly 25-35 ft thick, a cortical tissue of a few ...
E William Hancock is on CAP Network. CAP Network is a virtual workspace, to support collaboration among faculty, graduate students, postdocs and staff.
Five students from Allan Hancock College will travel to Louisville, Ky., to compete in the SkillsUSA National Championships, which aim to recognize st...
Buy Billy Hancock - Out of the Darkness [CD] at DeepDiscount.com. Music: Folk: 791022261127. Guaranteed Lowest Price. Free Shipping on Orders over $25!
View the monthly asthma forecast for Hancock, MD from AccuWeather.com and see how your respiratory health will be impacted by the weather
CNNs Ryan Young reports from the scene of the Hancock Tower fire, Chicago Fire Spokesman John McNicholas says that five people have been injured.
Hancock, E J. and Kilburn, D G., "The effects of cyclophosphamide on in vitro cytotoxic responses to a syngeneic tumour." (1982). Subject Strain Bibliography 1982. 988 ...
Mol, A; Hoerstrup, S P (2004). Heart valve tissue engineering -- where do we stand? International Journal of Cardiology, 95(Suppl 1):S57-S58. ...
Looking for online definition of Carpentier-Edwards aortic valve prosthesis in the Medical Dictionary? Carpentier-Edwards aortic valve prosthesis explanation free. What is Carpentier-Edwards aortic valve prosthesis? Meaning of Carpentier-Edwards aortic valve prosthesis medical term. What does Carpentier-Edwards aortic valve prosthesis mean?
Currently, aortic valve replacement procedures require a sternotomy and use of cardiopulmonary bypass (CPB) to arrest the heart and provide a bloodless field in which to operate. A less invasive alternative to open heart surgery is transapical or transcatheter aortic valve replacement (TAVR), already emerging as a feasible treatment for patients with high surgical risk. The bioprosthetic valves are delivered via catheters using transarterial or transapical approaches and are implanted within diseased aortic valves. This paper reports the development of a new self-expanding stent for minimally invasive aortic valve replacement and its delivery device for the transapical approach under real-time magnetic resonance imaging (MRI) guidance. Made of nitinol, the new stent is designed to implant and embed a commercially available bioprosthetic aortic valve in aortic root. An MRI passive marker was affixed onto the stent and an MRI active marker to the delivery device. These capabilities were tested in ...
OBJECTIVES: The purpose of the present study was to test whether the cumulative knowledge from the field of transapical transcatheter aortic valve implantation, when incorporated into a structured training and then gradually dispersed by internal proctoring, might eliminate the negative effect of the learning curve on the clinical outcomes. METHODS: The present study was a retrospective, single-center, observational cohort study of prospectively collected data from all 500 consecutive high-risk patients undergoing transapical transcatheter aortic valve implantation at our institution from April 2008 to December 2011. Of the 500 patients, 28 were in cardiogenic shock. Differences during the study period in baseline characteristics, procedural and postprocedural variables, and survival were analyzed using different statistical methods, including cumulative sum charts. RESULTS: The overall 30-day mortality was 4.6% (95% confidence interval, 3.1%-6.8%) and was 4.0% (95% confidence interval, ...
Percutaneous aortic valve replacement (PAVR), also known as transcatheter aortic valve implantation (TAVI) or transcatheter aortic valve replacement (TAVR), is the replacement of the aortic valve of the heart through the blood vessels (as opposed to valve replacement by open heart surgery). The replacement valve is delivered via one of several access methods: transfemoral (in the upper leg), transapical (through the wall of the heart), subclavian (beneath the collar bone), direct aortic (through a minimally invasive surgical incision into the aorta), and transcaval (from a temporary hole in the aorta near the belly button through a vein in the upper leg). Severe symptomatic aortic stenosis carries a poor prognosis. Until recently, surgical aortic valve replacement was the standard of care in adults with severe symptomatic aortic stenosis. However, the risks associated with surgical aortic valve replacement are increased in elderly patients and those with concomitant severe systolic heart failure ...
According to the latest market report published by Persistence Market Research titled Global Transcatheter Heart Valve Replacement & Repair Market: Global Industry Analysis and Forecast, 2016 - 2026, the global transcatheter heart valve replacement & repair market is projected to expand at a CAGR of 13.9% during the forecast period (2016-2026).. Request for Report [email protected]://www.persistencemarketresearch.com/samples/11167. Transcatheter heart valve replacement is a relatively non-invasive procedure to repair the damaged heart valves with bioprosthetic valves for treatment of valvular heart disease namely aortic stenosis and mitral regurgitation among geriatric population. It is an alternative approach to conventional open heart surgery, especially for extremely high risk patients. Transcatheter heart valve replacement & repair market was valued at US$ 1,605.5 Mn in 2015 and the revenue is expected to increase to US$ 6,701.5 Mn by 2026 at a CAGR of 13.9% over the forecast period.. The report ...
Repair of the Transcatheter aortic valve is a minimally invasive procedure. This technique is used without removing it to treat or restore old and damaged aortic valve. The technique used to insert a new valve to the place of the old aortic valve is called the Transcatheter aortic valve replacement system. Between the left atrium and the left ventricle is the mitral valve. Mitral valve disorder is a condition in which the valve ceases working properly, leading to abnormal blood flow. This abnormal blood flow can lead to diseases such as prolapse of the mitral valve and regurgitation of the mitral valve.. Renub Research latest study report "Transcatheter Heart Valve Replacement Market, Volume, Share by Materials (Mechanical and Tissue) Position (Transcather Mitral Valve Replacement and Transcatheter Aortic Valve Replacement), Region (United States, Germany, China, France, Italy, Japan, Spain, United Kingdom, India and Brazil), Company Analysis" provides a detailed and comprehensive insight of the ...
Compared to patients with a tricuspid aortic valve, patients with a bicuspid valve appear to have ascending aorta dilation that is out of proportion to the severity of aortic stenosis or regurgitation; further, patients with a bicuspid aortic valve are thought to be at greater risk of progressive aortic dilation after aortic valve replacement. These observations form the basis of a proposed genetic aortopathy associated with bicuspid aortic valve, and are the basis of current guideline recommendations for more aggressive treatment of proximal ascending aorta dilation among patients with bicuspid aortic valve at the time of surgical aortic valve replacement. However, other data suggest that flow abnormalities related to fusion patterns may be a major contributor to aortic dilation among patients with bicuspid valve (e.g., MM Bissell, et al. Circ Cardiovasc Imaging 2013;6:499-507). The present study suggests that patients with a bicuspid aortic valve undergoing aortic valve replacement for aortic ...

Hemodynamic evaluation of 19-mm Carpentier-Edwards pericardial bioprosthesis in aortic position<...Hemodynamic evaluation of 19-mm Carpentier-Edwards pericardial bioprosthesis in aortic position<...

Hemodynamic evaluation of 19-mm Carpentier-Edwards pericardial bioprosthesis in aortic position. Annals of Thoracic Surgery. ... Hemodynamic evaluation of 19-mm Carpentier-Edwards pericardial bioprosthesis in aortic position. :: Annals of Thoracic Surgery ... The aortic Carpentier-Edwards pericardial bioprosthesis offers good long-term clinical outcomes with a low rate of structural ... The aortic Carpentier-Edwards pericardial bioprosthesis offers good long-term clinical outcomes with a low rate of structural ...
more infohttps://keio.pure.elsevier.com/ja/publications/hemodynamic-evaluation-of-19-mm-carpentier-edwards-pericardial-bi

Patent US7189259 - Tissue material and process for bioprosthesis - Google PatentsPatent US7189259 - Tissue material and process for bioprosthesis - Google Patents

A biomaterial useful for bioprostheses such as bioprosthetic heart valves is provided in which the fixed tissue has improved ... The tissue of the present invention can generally be utilized in any of a number of bioprostheses. For instance, bioprostheses ... The present invention is generally directed to improved bioprostheses and methods for forming the improved bioprostheses. In ... bioprostheses are disclosed including tissues which have a greater elastin content than tissues used in similar bioprostheses ...
more infohttp://www.google.co.uk/patents/US7189259

bioprosthesis: Topics by WorldWideScience.orgbioprosthesis: Topics by WorldWideScience.org

When the long-term follow-up of the Freedom SOLO bioprosthesis is available, it has to be compared with other bioprosthesis for ... Patients with TF bioprostheses had higher rates of prolonged mechanical ventilation, whereas patients with the FS bioprosthesis ... Before matching, severe thrombocytopenia (Solo bioprosthesis and 1% with a Perimount bioprosthesis (p Solo (p Solo and ... Case 1: patients with bioprosthesis dysfunction; Case 2: severe aortic stenosis; Case 3: dysfunction of aortic bioprosthesis. ...
more infohttps://worldwidescience.org/topicpages/b/bioprosthesis.html

Early Structural Valve Deterioration of the Mitroflow Aortic Bioprosthesis | CirculationEarly Structural Valve Deterioration of the Mitroflow Aortic Bioprosthesis | Circulation

Mitroflow aortic bioprosthesis 5-year follow-up: North American Prospective Multicenter Study. Ann Thorac Surg. 2012;94:1198- ... Early Structural Valve Deterioration of the Mitroflow Aortic Bioprosthesis. Tsuyoshi Kaneko, Igor Gosev, Marzia Leacche, John G ... The valve is placed in the supra-annular position compared with the intra-annular position in some of the other bioprostheses. ... Alvarez et al11 reported their series of 491 patients ,70 years of age who received a Mitroflow aortic bioprosthesis. Freedom ...
more infohttp://circ.ahajournals.org/content/130/23/1997

Hancock II Ultra Porcine Bioprosthesis Hemodynamic Study - Full Text View - ClinicalTrials.govHancock II Ultra Porcine Bioprosthesis Hemodynamic Study - Full Text View - ClinicalTrials.gov

The primary objective of the study is the hemodynamic performance of the bioprosthesis at 6 and 12 months after surgery. [ Time ... Hancock II Ultra Porcine Bioprosthesis Hemodynamic Study. This study has been completed. ... bioprosthesis in the aortic position, to analyze the incidence of patient prosthesis mismatch, correlation of gradients, and to ...
more infohttps://clinicaltrials.gov/ct2/show/NCT01213615?recr=Open&cond=%22Heart+Valve+Diseases%22&rank=16

ATS 3f Aortic Bioprosthesis Offers Unique Approach To Enhanced Durability | EmaxHealthATS 3f Aortic Bioprosthesis Offers Unique Approach To Enhanced Durability | EmaxHealth

Aortic Bioprosthesis. ATS Medical acknowledged the positive clinical results of aortic root dimensions study presented by noted ... Louis, Missouri, and principal in the development of the ATS 3f(R) Aortic Bioprosthesis offered his comments on Dr. Jins ... Aortic Bioprosthesis with its single suture line/3 tab fixation, stentless valves implanted with conventional double suture ...
more infohttps://www.emaxhealth.com/80/11794.html

The Toronto Root Bioprosthesis: Midterm Results in 186 PatientsThe Toronto Root Bioprosthesis: Midterm Results in 186 Patients

The Toronto Root bioprosthesis is safe and provides good clinical and hemodynamic function after full root replacement with or ... The Toronto Root bioprosthesis with BiLinx anticalcification treatment (St. Jude Medical, St. Paul, MN) was introduced into ... received full root replacement at our institution with the Toronto Root bioprosthesis from June 2001 until November 2007. The ...
more infohttps://insights.ovid.com/tants/200906000/01438437-200906000-00018

Transapical transcatheter mitral valve implantation of the Tiara bio-prosthesis - WikipediaTransapical transcatheter mitral valve implantation of the Tiara bio-prosthesis - Wikipedia

Since the trials are very recent, the long-term effects of this mitral valve bio-prosthesis in humans are currently unknown. ... October 2012). "Tiara: a novel catheter-based mitral valve bioprosthesis: initial experiments and short-term pre-clinical ... February 2014). "Transapical mitral implantation of the Tiara bioprosthesis: pre-clinical results". JACC. Cardiovascular ...
more infohttps://en.wikipedia.org/wiki/Transapical_transcatheter_mitral_valve_implantation_of_the_Tiara_bio-prosthesis

Global Vascular Bioprostheses Market Research Report 2018 : ReportsnReportsGlobal Vascular Bioprostheses Market Research Report 2018 : ReportsnReports

In this report, the global Vascular Bioprostheses market is valued... ... 103 Pages Report] Check for Discount on Global Vascular Bioprostheses Market Research Report 2018 report by QYResearch Group. ... 1 Vascular Bioprostheses Market Overview. 1.1 Product Overview and Scope of Vascular Bioprostheses. 1.2 Vascular Bioprostheses ... Global Vascular Bioprostheses Market Research Report 2018 Table of Contents. Global Vascular Bioprostheses Market Research ...
more infohttp://www.reportsnreports.com/reports/1331565-global-vascular-bioprostheses-market-research-report-2018.html

Dysfunction of a 21-mm aortic bioprosthesis treated with percutaneous implantation of a CoreValve prosthesis.Dysfunction of a 21-mm aortic bioprosthesis treated with percutaneous implantation of a CoreValve prosthesis.

... valve-in-valve procedure with a CoreValve prosthesis for the treatment of a severely stenotic degenerated aortic bioprosthesis. ...
more infohttp://www.biomedsearch.com/nih/Dysfunction-21-mm-aortic-bioprosthesis/20407385.html

One-Year Outcomes of Cohort 1 in the Edwards SAPIEN Aortic Bioprosthesis European Outcome (SOURCE) Registry | CirculationOne-Year Outcomes of Cohort 1 in the Edwards SAPIEN Aortic Bioprosthesis European Outcome (SOURCE) Registry | Circulation

One-Year Outcomes of Cohort 1 in the Edwards SAPIEN Aortic Bioprosthesis European Outcome (SOURCE) Registry. The European ... Methods and Results-The Edwards SAPIEN Aortic Bioprosthesis European Outcome (SOURCE) Registry was designed to assess initial ... One-Year Outcomes of Cohort 1 in the Edwards SAPIEN Aortic Bioprosthesis European Outcome (SOURCE) Registry ... One-Year Outcomes of Cohort 1 in the Edwards SAPIEN Aortic Bioprosthesis European Outcome (SOURCE) Registry ...
more infohttp://circ.ahajournals.org/content/early/2011/07/11/CIRCULATIONAHA.110.001545

The Problem of Bioprosthesis Control and Possible Solutions / 2045 InitiativeThe Problem of Bioprosthesis Control and Possible Solutions / 2045 Initiative

In February 2011, a number of Russian researchers announced plans to create an artificial human body controlled by a neurointerface by the year 2045.
more infohttp://2045.com/news/29141.html

What prosthesis should be used at valve re-replacement after structural valve deterioration of a bioprosthesis?What prosthesis should be used at valve re-replacement after structural valve deterioration of a bioprosthesis?

... after valve re-replacement for bioprostheses is not well-documented. This research compares the late fate of these two valve ... The fate of bioprostheses (BP) and mechanical prostheses (MP) ... BACKGROUND: The fate of bioprostheses (BP) and mechanical ... Bioprosthesis* / adverse effects. Heart Valve Prosthesis* / adverse effects, classification. Heart Valve Prosthesis ... Next Document: Results of aortic valve replacement with a new supra-annular pericardial stented bioprosthesis.. ...
more infohttp://www.biomedsearch.com/nih/What-prosthesis-should-be-used/17126123.html

1 Recommendations | Transapical transcatheter mitral valve-in-valve implantation for a failed surgically implanted mitral valve...1 Recommendations | Transapical transcatheter mitral valve-in-valve implantation for a failed surgically implanted mitral valve...

... on transapical transcatheter mitral valve-in-valve implantation for a failed surgically implanted mitral valve bioprosthesis ... Transapical transcatheter mitral valve-in-valve implantation for a failed surgically implanted mitral valve bioprosthesis. ... 1.4 Transapical transcatheter mitral valve‑in‑valve implantation for a failed surgically implanted mitral valve bioprosthesis ... valve implantation for a failed surgically implanted mitral valve bioprosthesis onto the National Institute for Cardiovascular ...
more infohttps://www.nice.org.uk/guidance/ipg541/chapter/1-Recommendations

Successful Transapical Transcatheter Valve Implantation Within a Dysfunctional Mitral Bioprosthesis | JACC: Cardiovascular...Successful Transapical Transcatheter Valve Implantation Within a Dysfunctional Mitral Bioprosthesis | JACC: Cardiovascular...

Reoperation of degenerated bioprostheses has a high mortality risk that increases with the age and associated comorbidities of ... Successful Transapical Transcatheter Valve Implantation Within a Dysfunctional Mitral Bioprosthesis. Arend de Weger, Giuseppe ... Successful Transapical Transcatheter Valve Implantation Within a Dysfunctional Mitral Bioprosthesis. Arend de Weger, Giuseppe ... During the procedure, due to the absence of a radiopaque annular ring, the mitral bioprosthesis was only visible on fluoroscopy ...
more infohttp://imaging.onlinejacc.org/content/3/2/222

RePub, Erasmus University Repository:
  One-year outcomes associated with a novel stented bovine pericardial aortic...RePub, Erasmus University Repository: One-year outcomes associated with a novel stented bovine pericardial aortic...

aortic regurgitation, aortic stenosis, bovine pericardial bioprosthesis, surgical aortic valve replacement Persistent URL. dx. ... One-year outcomes associated with a novel stented bovine pericardial aortic bioprosthesis. Publication. Publication. The ... One-year outcomes associated with a novel stented bovine pericardial aortic bioprosthesis. The Journal of Thoracic and ...
more infohttps://repub.eur.nl/pub/106405

ATS Medical Announces First Commercial Implants of the ATS 3f Aortic Bioprosthesis in the Uni... ( MINNEAPOLIS Nov. 24 /- ATS...ATS Medical Announces First Commercial Implants of the ATS 3f Aortic Bioprosthesis in the Uni... ( MINNEAPOLIS Nov. 24 /- ATS...

The ATS 3f Aortic Bioprosthesis is the Companys first entry into ... The ATS 3f Aortic Bioprosthesis is the only tissue valve ... that pre...,ATS,Medical,Announces,First,Commercial,Implants,of,the,ATS,3f,Aortic,Bioprosthesis,in,the,United,States,medicine, ... The ATS 3f Aortic Bioprosthesis is the Companys first entry into ... The ATS 3f Aortic Bioprosthesis is the only tissue valve ... The ATS 3f Aortic Bioprosthesis is the Companys first entry into the $400-plus million U.S. tissue valve market. Based on the ...
more infohttp://bio-medicine.org/medicine-news-1/ATS-Medical-Announces-First-Commercial-Implants-of-the-ATS-3f-Aortic-Bioprosthesis-in-the-United-States-30414-1/

ISRCTN - ISRCTN56511757: Prospective randomised trial of stented versus stentless bioprosthesis for aortic valve replacement ...ISRCTN - ISRCTN56511757: Prospective randomised trial of stented versus stentless bioprosthesis for aortic valve replacement ...

Prima Plus (Edwards Lifesciences) stentless bioprosthesis or the Carpentier-Edwards Perimount stented bioprosthesis (Edwards ... Prospective randomised trial of stented versus stentless bioprosthesis for aortic valve replacement (AVR). ...
more infohttp://www.isrctn.com/ISRCTN56511757

The standard Hancock porcine bioprosthesis: overall experience...The standard Hancock porcine bioprosthesis: overall experience...

The standard Hancock porcine bioprosthesis: overall experience at the University of Padova.: All patients undergoing aortic ( ... The standard Hancock porcine bioprosthesis: overall experience at the University of Padova.. Authors * Gallucci, V ... valve replacement with a standard Hancock porcine bioprosthesis (HPB) from 1970 to 1983 were reviewed. A total of 665 patients ...
more infohttps://www.mysciencework.com/publication/show/standard-hancock-porcine-bioprosthesis-overall-experience-university-padova-908c85d0

A Case of Acute Aortic Regurgitation due to Leaflet Dehiscence of a Carpentier-Edwards Pericardial Bioprosthesis 16 Years after...A Case of Acute Aortic Regurgitation due to Leaflet Dehiscence of a Carpentier-Edwards Pericardial Bioprosthesis 16 Years after...

A Case of Acute Aortic Regurgitation due to Leaflet Dehiscence of a Carpentier-Edwards Pericardial Bioprosthesis 16 Years after ... A 39-year-old woman, who had undergone aortic valve replacement with a Carpentier-Edwards pericardial bioprosthesis 16 years ...
more infohttp://square.umin.ac.jp/jscvs/eng/journal/vol41-5/228.html

Lirias: Aortic and mitral valve replacement with the Carpentier-Edwards pericardial bioprosthesis: mid-term clinical resultsLirias: Aortic and mitral valve replacement with the Carpentier-Edwards pericardial bioprosthesis: mid-term clinical results

Aortic and mitral valve replacement with the Carpentier-Edwards pericardial bioprosthesis: mid-term clinical results. ... durability of this valve is excellent and consider the Carpentier-Edwards pericardial valve as the stented bioprosthesis of ...
more infohttps://lirias.kuleuven.be/handle/123456789/23959

Outcomes Following Transcatheter Aortic Valve Replacement for Degenerative Stentless Versus Stented Bioprostheses | JACC:...Outcomes Following Transcatheter Aortic Valve Replacement for Degenerative Stentless Versus Stented Bioprostheses | JACC:...

45.1%). The degree of oversizing for all mechanisms of bioprosthesis failure was 9 ± 10% for stentless ViV-TAVR vs. 6 ± 9% for ... Outcomes Following Transcatheter Aortic Valve Replacement for Degenerative Stentless Versus Stented Bioprostheses ... Outcomes Following Transcatheter Aortic Valve Replacement for Degenerative Stentless Versus Stented Bioprostheses ... Outcomes Following Transcatheter Aortic Valve Replacement for Degenerative Stentless Versus Stented Bioprostheses ...
more infohttp://interventions.onlinejacc.org/content/12/13/1256

RePub, Erasmus University Repository:
  Surgically implanted aortic valve bioprostheses deform after implantation: insights...RePub, Erasmus University Repository: Surgically implanted aortic valve bioprostheses deform after implantation: insights...

Bioprosthesis, Heart valve prosthesis, Multidetector-row computed tomography Persistent URL. dx.doi.org/10.1007/s00330-019- ... Key Points: • Deformation of surgically implanted aortic valve bioprostheses (bio-sAVRs) can be adequately assessed using MDCT ... Surgically implanted aortic valve bioprostheses deform after implantation: insights from computed tomography. Publication. ... Surgically implanted aortic valve bioprostheses deform after implantation: insights from computed tomography. European ...
more infohttps://repub.eur.nl/pub/124457

Transcatheter valve-in-valve overexpansion for treating a large dysfunctional tricuspid bioprosthesis, Interactive...Transcatheter valve-in-valve overexpansion for treating a large dysfunctional tricuspid bioprosthesis, Interactive...

"Transcatheter valve-in-valve overexpansion for treating a large dysfunctional tricuspid bioprosthesis, Interactive ... Transcatheter valve-in-valve overexpansion for treating a large dysfunctional tricuspid bioprosthesis. Asmarats, Luis; Houde, ... DISCUSSION TVIV implantation within failed tricuspid bioprostheses has emerged as an alternative to surgery in recent years. To ... DISCUSSION TVIV implantation within failed tricuspid bioprostheses has emerged as an alternative to surgery in recent years. To ...
more infohttps://www.deepdyve.com/lp/ou_press/transcatheter-valve-in-valve-overexpansion-for-treating-a-large-gWMhAlmE4n

Fabrication of aortic bioprosthesis by decellularization, fibrin glue coating and re-endothelization: a cell scaffold approach ...Fabrication of aortic bioprosthesis by decellularization, fibrin glue coating and re-endothelization: a cell scaffold approach ...

To form a non-thrombotic surface on the bioprosthesis and to avoid the graft versus host reaction, the most natural way is to ... Fabrication of aortic bioprosthesis by decellularization, fibrin glue coating and re-endothelization: a cell scaffold approach ... Hence, the roles of biological source blood vessel are appreciated (Hansen 2005). The bioprostheses are usually structured in ... These properties are met better toward bioprosthesis and homografts compared to synthetic ones. There are various ways to ...
more infohttps://rd.springer.com/article/10.1007%2Fs40204-019-00122-2
  • The Toronto Root bioprosthesis with BiLinx anticalcification treatment (St. Jude Medical, St. Paul, MN) was introduced into clinical practice in 2001, mainly for patients with aortic valve disease and additional pathology of the aorta. (ovid.com)
  • A total of 186 patients (62 ± 11 years, 38 female) received full root replacement at our institution with the Toronto Root bioprosthesis from June 2001 until November 2007. (ovid.com)
  • With 320-row MDCT, a circular deployment of the 26-mm Edwards-Sapien valve (Edwards Lifesciences Inc.) within the bioprosthetic mitral valve was demonstrated ( Fig. 1 G). This case illustrates the feasibility of using a transcatheter valve-in-valve procedure in a dysfunctional mitral bioprosthesis and the role of multimodality imaging to accurately select the prosthesis and to guide the procedure. (onlinejacc.org)
  • In this report, the global Vascular Bioprostheses market is valued at USD XX million in 2017 and is expected to reach USD XX million by the end of 2025, growing at a CAGR of XX% between 2017 and 2025. (reportsnreports.com)
  • Transesophageal echocardiography revealed severe mitral regurgitation secondary to a degenerative flail bioprosthesis ( Fig. 1 A). The patient's logistic EuroSCORE was 32% for repeat mitral valve operation. (onlinejacc.org)
  • In this patient, the distortion of one leaflet was the main reason for transvalvular leakage of the CEP bioprosthesis in the mitral position. (worldwidescience.org)
  • He underwent an aortic valve replacement with a Freedom SOLO bioprosthesis 6 years ago. (worldwidescience.org)
  • To our knowledge, this is the third failure of a Freedom SOLO bioprosthesis reported in the literature. (worldwidescience.org)
  • When the long-term follow-up of the Freedom SOLO bioprosthesis is available, it has to be compared with other bioprosthesis for long-term durability. (worldwidescience.org)
  • During the selection of the appropriate Edwards-Sapien valve size (Edwards Lifesciences Inc., Irvine, California), the internal diameter and length of the pre-existing mitral bioprosthesis using multiplanar reconstructions by 320-row MDCT were taken into consideration ( Fig. 1 B). Because the 27-mm Medtronic Mosaic bioprosthetic valve (Medtronic Inc.) had an internal diameter of 24 mm, a 26-mm Edwards-Sapien valve prosthesis (Edwards Lifesciences Inc.) was selected. (onlinejacc.org)
  • Reoperation of degenerated bioprostheses has a high mortality risk that increases with the age and associated comorbidities of the patients. (onlinejacc.org)
  • RESULTS From a total sample of 397 patients with the FS and 525 TF bioprostheses with a median follow-up time of 4.0 (2.2-6.0) and 2.4 (1.4-3.7) years, respectively, a matched sample of 329 pairs was obtained. (deepdyve.com)
  • Patients with TF bioprostheses had higher rates of prolonged mechanical ventilation, whereas patients with the FS bioprosthesis showed higher rates of thrombocytopenia. (deepdyve.com)
  • Bioprostheses are the mainstay of aortic valve replacement (AVR) in elderly persons, but their use is increasing in younger patients as well . (deepdyve.com)
  • Long-term follow-up is needed for comparisons with classical bioprosthesis models. (deepdyve.com)
  • ATS Medical Announces First Commercial Implants of the ATS 3f Aortic Bioprosthesis in the Uni. (bio-medicine.org)
  • ATSI ), manufacturer and marketer of state-of-the-art cardiac surgery products and services, today announced that the first three commercial implants of the ATS 3f(R) Aortic Bioprosthesis were completed by Dr. Allan Stewart, Director, Aortic Surgery Program at Columbia University Medical Center in New York ( http://www.ctsnet.org/home/allanstewart ) on November 17 and 18, 2008. (bio-medicine.org)