Search Results
Results 451 - 500 of 2134
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Fan Dali - - 2008
We describe the case of a 43 year old man with a history of aortic stenosis, for which he had undergone aortic valve replacement in 1991 with a 25-mm Medtronic Hall prosthesis. He presented with several acute episodes of dyspnea and flash pulmonary edema. Transthoracic and transesophageal echocardiography performed to ...
Locca Didier - - 2008
We describe the case of a 70-year-old man who presented with increasing exertional dyspnea. He was found to have an ejection systolic murmur and evidence of right ventricular outflow tract obstruction, with a peak velocity of 4.5 m/s recorded by transthoracic Doppler echocardiography. Cardiovascular magnetic resonance showed right ventricular hypertrophy, ...
Niclauss Lars - - 2008
Giant cell arteritis (GCA) is a well-known entity, creating aortic valve regurgitation secondary to dilatation of the aortic wall. No direct involvement of the aortic valve leaflets has yet been documented. A 75-year-old woman with a history of polymyalgia rheumatica and Horton disease was admitted to the authors' institution with ...
Quaden René - - 2008
OBJECTIVE: Transluminal in vitro resection of severely calcified human aortic valves has already been successfully carried out by our group. The aim of this study was to analyze endovascular laser-assisted resection of human aortic valves in situ in 10 human cadavers. MATERIAL AND METHODS: After anterolateral minithoracotomy, the aortic valve ...
Conradi Lenard - - 2008
The article by Sack and co-workers published in this issue presents the results of a retrospective study on the treatment of severe calcified aortic stenosis (AS) by means of balloon aortic valvuloplasty (BAV) in the elderly patient. While arguing that BAV should be used in patients unfit for surgical aortic ...
Jassal Davinder S - - 2008
AIMS: Mitral annular calcification (MAC) is characterized by calcium and lipid deposition in the annular fibrosa of the mitral valve. Although individuals with MAC are at increased risk of cardiovascular events, little is known about the significance of this finding in patients with concurrent aortic stenosis (AS). The aim of ...
Guntheroth Warren G - - 2008
The 2006 practice guidelines from the American College of Cardiology and the American Heart Association recommend prophylactic aortic replacement for even an asymptomatic patient with a bicuspid aortic valve (BAV) when the aortic dimensions exceed arbitrary ranges based on Marfan syndrome, without comparing risk estimates of aortic dissection with operative ...
Almeida Rui - - 2008
Simultaneous en bloc replacement of the ascending aorta and aortic valve by a composite valve graft, as first described by Bentall and De Bono in 1968 and with later modifications, has become the standard surgical technique in the treatment of aneurysms of the aortic root associated with severe aortic valve ...
Di Pino Alfredo - - 2008
Quadricuspid aortic valves are rare congenital anomalies, usually diagnosed in adult patients affected by severe aortic regurgitation. We have now encountered three such valves in children undergoing transthoracic echocardiography. All children were asymptomatic. The first child possessed a valve with two larger leaflets, and smaller leaflets of equal size. In ...
Kappetein A Pieter - - 2008
Increased life-expectancy has led to a growing elderly population frequently presenting with aortic stenosis. This review focuses on the pathogenesis of calcific aortic stenosis, diagnosis and possible ways to halt the progression to severe symptomatic aortic stenosis, methods of assessing symptoms and severity, and modalities and timing of aortic valve ...
Buellesfeld Lutz - - 2008
OBJECTIVES AND BACKGROUND: Percutaneous aortic valve replacement is a new less-invasive alternative for high-risk surgical candidates with aortic stenosis. However, the clinical experience is still limited, and the currently available 'first-generation devices' revealed technical shortcomings, such as lack of repositionability and presence of paravalvular leakages. We report the first-in-man experience ...
Webb John G - - 2008
Percutaneous valve replacement is developing into an effective and reproducible therapy for aortic valve stenosis. Initial experience suggests that outcomes compare favorably with conventional valve surgery in selected patients with comorbidities, such as advanced age. Caution is prudent, however, in the future a more mature procedure might represent a viable ...
Ogino Hitoshi - - 2008
In the aortic valve-sparing reimplantation technique, insertion of the anchoring sutures beneath the valve is a crucial but difficult step because the spared aortic cusps obscure the field of view. We present a novel and easy method of placing these anchoring stitches with good exposure of the subvalvular tissue.
Totsugawa Toshinori - - 2008
A 42-year-old man suffering from massive aortic valve regurgitation with mild stenosis because of a bicuspid valve underwent surgery in May 2007. The surgical procedure was performed through a right anterolateral thoracotomy using the peripheral cannulation method. Cardiac arrest was achieved by direct aortic cross-clamping and selective cardioplegia delivery. The ...
Fazal Iftikhar A - - 2009
Aortic stenosis (AS) is the most common indication for valve surgery. Recent data suggested an increased risk of cerebral emboli when the aortic valve is crossed to obtain 'pull-back' gradient. We conducted a large questionnaire based study to evaluate current practice in the assessment of aortic valve gradient amongst cardiologists ...
Pantanowitz Liron - - 2009
We report, to the best of our knowledge, the first case of fatty infiltration involving a semilunar cardiac valve. A non-obese 79-year-old man had an echogenic mass in the right coronary cusp on transesophageal echocardiography attributed to fatty infiltration. Fat in this location is extraordinary, and may arise from pluripotential ...
Doss Mirko - - 2008
OBJECTIVE: Reoperation rates after repair of bicuspid aortic valves are higher than for mitral valve reconstruction. Satisfactory results have been reported for patch augmentation for tricuspid aortic valves. We have applied this technique for the repair of bicuspid aortic valves. METHODS: Autologous pericardium is sutured to the free edge of ...
Helliwell T R - - 2008
Alkaptonuria is a rare, inherited defect of homogentisic acid 1,2-dioxygenase that leads to the widespread deposition of polymeric homogentisic acid, and clinical symptoms from degeneration of joints and the aortic valve. Pathological descriptions are few and mainly those of late-stage changes related to joint or valve failure. In this review, ...
Butany Jagdish - - 2009
BACKGROUND: Aneurysms of the ascending aorta occur as result of intrinsic changes in the aortic wall and have been well documented in patients with bicuspid aortic valve (BAV). In few reported clinical studies, documenting aneurysmal dilatation in unicommissural aortic valves (UAV); there have been no comments on the aortic wall ...
Watt, Derek Randall
Calcific aortic valve sclerosis is characterized by focal lesions in the valve leaflet. These lesions are rich in myofibroblasts that express α-SMA and cause fibrosis. Lesions tend to occur in regions of the leaflet that are subjected to large bending loads, suggesting a mechanobiological basis for myofibrogenic differentiation and valve ...
Sonoda Makoto - - 2008
A bicuspid aortic valve (BAV) often causes aortic stenosis (AS) or regurgitation (AR). In 54 patients with a BAV (48 +/- 16 years), transthoracic and transesophageal echo were performed to measure aortic annulus diameter (AAD), to evaluate the severity of aortic valve disease (AVD) and to calculate the area eccentricity ...
Webb John G - - 2008
Aortic valve replacement can produce dramatic benefit in the setting of aortic stenosis. The potential for morbidity and mortality associated with thoracotomy, cardiopulmonary bypass, and aortotomy has fostered a search for alternatives. Early experience with transcatheter endovascular aortic valve implantation demonstrated feasibility and durability, but the procedure was difficult to ...
Scrofani Roberto - - 2008
Quadricuspid aortic valve is the rarest congenital anomaly of the semilunar valves. In the past it has been frequently detected incidentally at autopsy or during cardiac surgery. Recently, the evolution of diagnostic techniques with Doppler analysis has allowed to identify preoperatively this uncommon cardiac abnormality. We report a case of ...
Glancy D Luke - - 2008
A 43-year-old man came to the hospital because of increasing dyspnea for two weeks. At age nine months the patient was evaluated for failure to thrive, and a diagnosis of valvular aortic stenosis was made. At operation the aortic stenosis was found to be supravalvular, and the ascending aorta was ...
Nucifora Gaetano - - 2008
Quadricuspid aortic valve is a rare congenital abnormality; it is usually an isolated lesion, but several concomitant congenital abnormalities have been described. We report a case of congenital quadricuspid aortic valve associated with obstructive hypertrophic cardiomyopathy. Two-dimensional (2D) transthoracic and transesophageal echocardiography and real-time three-dimensional (3D) echocardiography clarified the morphological ...
Armen Todd A - - 2008
BACKGROUND: Quadricuspid aortic valve is one of the rare forms of congenital cardiac valvular disease. Its diagnosis is often missed, even with the transthoracic echocardiogram. Many of these patients progress to aortic incompetence later in life requiring surgical intervention. In addition, quadricuspid aortic valve can be associated with other congenital ...
Rankin J Scott - - 2008
BACKGROUND AND AIM OF THE STUDY: An improved understanding of aortic valvar anatomy could assist in further developing surgical repair of the valve. The study aim was to evaluate the three-dimensional (3-D) geometry of the aortic valve in normal human hearts. METHODS: In eight human cadaver hearts, the aorta and ...
Dumesnil Jean G - - 2008
Previously, aortic valve stenosis (AS) etiology was usually congenital or due to rheumatic disease. However, the most frequent cause is now degenerative AS, which is often part of a continuum including increased rigidity of the aorta due to atherosclerosis and left ventricular dysfunction due to coronary artery disease. This article ...
Steinmetz Martin - - 2008
BACKGROUND AND AIM OF THE STUDY: Although degenerative calcific aortic valve stenosis is the most common valvular disease among the elderly, neither the etiology underlying the condition nor degeneration of the bioprostheses is yet fully understood. The study aim was to assess the expression profile of those OPG/RANKL/RANK-system determinants known ...
Zapolski Tomasz - - 2008
OBJECTIVES: To evaluate the presence and extent of cardiac calcifications and aortic stiffness in patients with end-stage renal disease (ESRD). PATIENTS AND METHODS: The study group consisted of 60 patients with ESRD with a mean age of 51.7 years, treated with peritoneal dialysis. In all patients transthoracic echocardiogram was performed ...
Schaefer B M - - 2008
OBJECTIVE: To establish a classification of bicuspid aortic valve (BAV) that includes both leaflet morphology and aortic shape. SETTING: Two academic medical centres of the University of Washington, Seattle. PATIENTS: 191 adult patients with BAV. INTERVENTIONS: Review of clinical data and transthoracic echocardiograms. MAIN OUTCOME MEASURES: Assessment of leaflet morphology; ...
Ono Masamichi - - 2008
Aortico-left ventricular tunnel is a rare congenital cardiac defect, which bypasses the aortic valve via the paravalvar connection from the left ventricle to the aorta. In most of the cases, the tunnel arises from the right aortic sinus. We herein report a case of aortico-left ventricular tunnel, of which the ...
Goetz Wolfgang A - - 2008
OBJECTIVE: Aortic valve cusp extension and free-hand aortic valve replacement with autologous pericardium has been described. The long-term results were shown to be comparable with commercially available aortic bioprostheses. Nevertheless the relatively demanding surgical technique could not find wide acceptance. We developed a new design of a molded aortic valve, ...
Pitta Sridevi R - - 2008
Quadricuspid aortic valve is a rare congenital anomaly. It may present as an isolated anomaly but is occasionally associated with aortic regurgitation. Sinus of Valsalva aneurysm (SVA) is also an infrequent congenital anomaly, typically associated with tricuspid aortic valves. There are only a few reported cases of SVA (ruptured) associated ...
Fann James I - - 2008
To decrease the morbidity associated with conventional surgery for calcific aortic stenosis, there has been increasing interest in catheter-based treatment using a stent or frame mounted bioprosthetic valve. Critical to its success is knowledge of pathoanatomy, risk of embolization of calcific debris, and issues associated with device anchoring and paravalvular ...
Zegdi Rachid - - 2008
OBJECTIVES: This study was designed to study the behavior of a stent deployed inside human stenotic aortic valves. BACKGROUND: Endovascular valved stent (VS) implantation is a promising new therapy for patients with severe calcific aortic stenosis (AS). The precise characteristics of stent deployment in humans have been poorly studied so ...
Dal-Bianco Jacob P - - 2008
Calcification of normal tricuspid and congenital bicuspid valves is the most common cause of aortic stenosis in industrialized countries. There is compelling evidence that thickening and calcification in aortic valve disease is a complex inflammatory process and not simply age-related degeneration. Both aortic sclerosis and stenosis represent phenotypic expressions of ...
Amchentsev Alexey - - 2008
The authors present an unusual case of torsades de pointes (Tdp) in an elderly woman with a history of aortic stenosis, status post aortic valve replacement. She was admitted for atrial fibrillation with a slow ventricular response. At the time of admission, the patient was asymptomatic and not taking any ...
Casaclang-Verzosa Grace - - 2008
OBJECTIVE: Our aim was to determine echocardiographic Doppler predictors of pulmonary artery systolic pressure (PASP) in patients with moderate to severe aortic stenosis (AS). METHODS: In this retrospective study of 50 patients with moderate to severe AS, the determinants of PASP were analyzed. RESULTS: Aortic valve area was 0.84 +/- ...
Grünenfelder Jürg - - 2008
Transapical aortic valve replacement has been introduced into clinical practice from which also patients with failing biological valves might profit: valve-in-valve procedure. The aim of the study was to determine the fate of biological valves in long-term follow-up (FU) and to evaluate topography and dimensions for transapical access via dual-source ...
Klieverik Loes M A - - 2008
AIMS: We analysed the outcome of young adults with congenital aortic valve disease who underwent allograft or autograft aortic valve or root replacement in our institution and evaluated whether there is a preference for either valve substitute. METHODS AND RESULTS: Between 1987 and 2007, 169 consecutive patients with congenital aortic ...
Singh Devinder - - 2008
Unicuspid aortic valve with severe aortic stenosis and moderate aortic regurgitation was diagnosed incidentally in an asymptomatic adult male laborer. Unicuspid aortic valve is a rare congenital anomaly of aortic valve. A literature review has suggested that estimated incidence of aortic valve is 0.02%. This case demonstrates incidental diagnosis of ...
Bratos-Pérez Miguel A - - 2008
AIMS: Among various hypotheses proposed for pathological tissue calcification, recent evidence supports the possibility that self-replicating calcifying nanoparticles (CNPs) can contribute to such calcification. These CNPs have been detected and isolated from calcified human tissues, including blood vessels and kidney stones, and are referred to as nanobacteria. We evaluated calcific ...
Shervin Ziabakhsh Tabary
<p>From August 1997 to December 2000, 19 patients with aortic regurgitation due to congenital aortic valve underwent aortic valve repair (17 men and 2 women with a mean age of 42 ± 17 years; range, 16 to 70 years). The mean preoperative aortic regurgitation grade was 3.1 ± 0.8 on ...
Méndez Ricardo J - - 2008
Thrombosis in a native aortic valve is a rare complication which may lead to systemic embolization. A few cases of aortic thrombosis in previously abnormal valves have been described. In this report, we describe a 42-year-old male who suffered two acute ischaemic attacks, one in the upper right limb and ...
Poppe Dirk - - 2008
We report the case of a 54-year-old patient admitted for rehabilitation after implantation of a stentless bioprosthesis due to severe insufficiency of a degenerated bicuspid aortic valve. The patient could fully participate in a standard cardiac rehabilitation program without any signs of haemodynamic instability. Transthoracic echocardiography showed a small mobile ...
Ruge Hendrik - - 2008
We successfully implanted a bioprosthetic aortic valve via the right subclavian artery within the framework of the CoreValve transapical aortic valve replacement (TAVR) ReValving (CoreValve, Irvine, CA, USA) clinical trial on November 20, 2007, at the Clinic for Cardiovascular Surgery at the German Heart Center Munich, Technical University Munich. The ...
Ho Paul C - - 2008
The frontier of percutaneous aortic valve replacement is challenged by hemodynamic and anatomic obstacles in the precise positioning of the device. With vital structures such as the mitral valve apparatus and the coronary ostia on either side, the margin of error is only within a few millimeters in the placement ...
Stanescu Cristina Maria - - 2008
In tetralogy of Fallot (TOF), the most common form of cyanotic congenital heart disease, only a few patients reach adulthood without surgical correction. We present the case of a man with TOF who survived until the age of 75 years without surgical intervention and had a very unusual combination of ...
Horáková Lucie - - 2008
The authors present a case of thrombosis on the St. Jude Medical 19 aortic valve prosthesis. The diagnosis was confirmed by transthoracic and transoesofageal echocardiography, cardiac fluoroscopy revealed restricted movement of the aortic valve prosthesis leaflet. Thrombolytic therapy was complicated with brain embolism that was successfully percutaneously removed from the ...
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