Search Results
Results 401 - 450 of 2129
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Mastroroberto P - - 2008
AIM: Aortic dissection is frequently complicated by regurgitation of the aortic valve resulting from leaflet prolapse or tearing of the annulus or leaflet. The authors have evaluated the results using the technique of aortic valve preservation in patients with acute type A aortic dissection (AAD). METHODS: In a consecutive series ...
Zierer Andreas - - 2008
OBJECTIVE: Percutaneous aortic valve implantation has been performed clinically in high-risk patients with severe aortic stenosis. Transfemoral retrograde valve delivery is limited by concomitant peripheral vascular disease and the size of the delivery system. We report on the alternative transapical approach that allows accurate antegrade placement of a catheter-deliverable aortic ...
Kawanishi Yujiro - - 2008
A 56-year-old man was referred because of severe aortic regurgitation. He had a quadricuspid aortic valve with a small accessory cusp between the right coronary and noncoronary cusps. The ostium of the right coronary artery was deviated toward the accessory cusp commissure. Aortic valve replacement was performed with a bioprosthesis. ...
Izutani Hironori - - 2008
We experienced extremely early aortic bioprosthetic valve deterioration with leaflet calcification and stiffening 2 1/2 years after aortic valve replacement in a female octogenarian. We could not identify the possible reason for this devastating complication; however, daily calcium supplement consumption may play a role of acceleration of calcium deposition in ...
John Alexander - - 2008
Experience with a new operation for patients with aortic valve disease and aneurysm or dissection of the ascending aorta is described. Twenty-four patients aged 66-87 years were operated on using a subcoronary implantation technique with a stentless aortic valve bioprosthesis and an extension using a vascular tube prosthesis. No major ...
Del Valle-Fernández R - - 2008
Degenerative aortic stenosis is the most frequent heart valve disease. As an alternative to surgical aortic valve replacement, several companies are working on the development of new prosthesis designed to be deployed by transcatheter approaches. Both transfemoral and transapical techniques are feasible, and initial trials in high-risk patients show good ...
Clavel Marie-Annick - - 2008
BACKGROUND: Patients with low-flow, low-gradient aortic stenosis have a poor prognosis with conservative therapy but a high operative mortality if treated surgically. Recently, we proposed a new index of aortic stenosis severity derived from dobutamine stress echocardiography, the projected aortic valve area at a normal transvalvular flow rate, as superior ...
Lu Tri-Linh C - - 2009
The aim of this study was to provide an insight into normative values of the ascending aorta in regards to novel endovascular procedures using ECG-gated multi-detector CT angiography. Seventy-seven adult patients without ascending aortic abnormalities were evaluated. Measurements at relevant levels of the aortic root and ascending aorta were obtained. ...
Debl K - - 2008
Congenitally malformed aortic valves are a common finding in adults with aortic valve disease. Most of these patients have bicuspid aortic valve disease. Unicuspid aortic valve disease (UAV) is rare. The aim of our study was to describe valve morphology and the dimensions of the proximal aorta in a cohort ...
Grimard Brian H - - 2008
Aortic stenosis is the most important cardiac valve disease in developed countries, affecting 3 percent of persons older than 65 years. Although the survival rate in asymptomatic patients with aortic stenosis is comparable to that in age- and sex-matched control patients, the average overall survival rate in symptomatic persons without ...
Matsumura Yoshiki - - 2008
Improvement in left ventricular (LV) systolic function after aortic valve replacement (AVR) has been observed in patients with aortic valve stenosis (AS). However, the factors that predict such recovery remain unclear. We sought to identify the predictive value of the LV spherical shape for LV functional recovery after "isolated" AVR ...
Li Wen-Bin - - 2008
BACKGROUND: Aortic root replacement with pulmonary autograft (Ross procedure) has the advantages of good haemodynamics and growth potential without the need for anticoagulation. In this study, we reviewed our experience of the Ross procedure for patients with aortic valve disease. METHODS: From October 1994 to January 2005, 42 Ross procedures ...
Hakuno Daihiko - - 2009
Morbidity from degenerative aortic valve disease is increasing worldwide, concomitant with the ageing of the general population and the habitual consumption of diets high in calories and cholesterol. Immunohistologic studies have suggested that the molecular mechanism occurring in the degenerate aortic valve resembles that of atherosclerosis, prompting the testing of ...
Miller Jordan D - - 2008
The aim of this study was to determine whether oxidative stress is increased in calcified, stenotic aortic valves and to examine mechanisms that might contribute to increased oxidative stress. Oxidative stress is increased in atherosclerotic lesions and might play an important role in plaque progression and calcification. The role of ...
Cheung Anson - - 2008
Aortic stenosis is one of the most common valve pathologies found in adults. Aortic valve replacement via a sternotomy and cardiopulmonary bypass is the treatment of choice for patients with symptomatic aortic stenosis with very acceptable risk. However, patients with advanced age and multiple comorbidities carry significant operative risk; operative ...
Yildirim Selman Vefa - - 2008
Quadricuspid aortic valve is a rare congenital condition that occurs not only as an isolated anomaly, but also with other cardiac defects. We describe a 10-year-old boy whose aortic stenosis was diagnosed during infancy. Transthoracic echocardiography revealed dilation of the left ventricle, valvular and subvalvular aortic stenosis, bicuspid aortic valve, ...
Toutouzas Konstantinos - - 2008
OBJECTIVES: We investigated in vivo in aortic valve stenosis (AVS) whether there is: 1) thermal heterogeneity within the valve leaflets; 2) temperature difference between the leaflets and the ascending aortic wall; and 3) a possible correlation between heat production, inflammation, and neoangiogenesis. BACKGROUND: Histological studies have demonstrated a potential role ...
Hashimoto Masayuki - - 2008
BACKGROUND: Placement of aortic stent-valves in the proper position is difficult due to the high velocity and oscillation of blood flow and anatomical characteristics. To address this problem, a re-positionable stent-valve was designed and examined in a preliminary animal experiment. METHODS: Protocols for this animal study were approved by the ...
Mizuno Tomohiro - - 2008
The Medtronic Freestyle stentless bioprosthetic valve provides excellent hemodynamics and long-term durability. However, several studies have reported mid-term structural valve deterioration unique to cases of Freestyle bioprosthesis implantation. According to these reports, the degeneration of the porcine aortic wall causes the dilatation and disruption of the sinus of Valsalva. We ...
Lange Rüdiger - - 2008
OBJECTIVE: Long-term results after the arterial switch operation have shown that patients may develop aortic insufficiency, and that some even require aortic valve replacement. METHODS: A retrospective review of 479 hospital survivors after the arterial switch operation (ASO) was performed. Echocardiographic findings were reviewed and the incidence, as well as ...
Vavuranakis Manolis - - 2009
We describe the case of a woman which was found incidentally on catheterization to have a pseudo-aneurysm of the ascending aorta at the site of a previously (15 years ago) implanted metallic prosthetic aortic valve. Angiographic and computed tomography images are provided, which demonstrate the pseudo- aneurysm.
Kawase Isamu - - 2008
A 78-year-old man with aortic stenosis complained of dark colored urine followed by recurrent chest pain and syncopal episodes. Echocardiography showed severely calcified aortic stenosis with the maximal pressure gradient of 125 mm Hg. Hemoglobin was 7.9 g/dL, lactate dehydrogenase was 2,295 IU/L, haptoglobin was less than 10 mg/dL, reticulocyte ...
Shibata Toshihiko - - 2008
We present a report on reinforcement of the proximal anastomosis during the Bentall operation. The aortic wall was excised with a 5-mm remnant, and aortic valve leaflets were preserved. Interrupted horizontal mattress sutures (2-0 Polyestel) reinforced with pledgets were placed. The composite graft was placed at the intraannular position inside ...
Chiam Paul T L - - 2008
Aortic valve stenosis is increasing in frequency as the population ages. Surgical aortic valve replacement is the gold standard for symptomatic patients with severe aortic valve stenosis. However, in a subset of high-risk patients, the surgical option is excluded due to severe comorbidities. Recently, an alternative to surgical aortic valve ...
Hori Daijiro - - 2008
A previously healthy 33-year-old man presented to our hospital with fever, left hemiparalysis, motor aphasia, and clouding of consciousness. Echocardiography revealed vegetation attached to the bicuspid aortic valve as well as an aneurysm originating below the annulus. Head computed tomography showed multiple infarctions. Under the diagnosis of infective endocarditis and ...
Low Reginald I - - 2008
AIMS: This paper reports the technical feasibility of using the Direct Flow Medical percutaneous aortic valve (PAV) to treat patients with severe aortic stenosis (AS). METHODS AND RESULTS: Eight patients with critical AS underwent temporary implantation of the PAV. Two patients received open surgical implantation of the device while six ...
Ozaslan Feyzan - - 2008
OBJECTIVE: The performance of the Ross procedure in the case of geometric mismatch between pulmonary autograft and a bicuspid aortic root has not yet been fully evaluated. To prevent geometrically caused autograft dysfunction, a modification of the surgical technique is necessary. METHODS: Between January 1996 and January 2007, 50 patients ...
Khaw Alexander V - - 2009
BACKGROUND: Evaluation of aortic valve stenosis is a major clinical application of echocardiography. The widely employed continuity equation requires determination of the left ventricular outflow tract (LVOT) area. We aimed at testing whether direct area measurement in a volume data set is superior to conventional calculation from the LVOT diameter. ...
Monro James L - - 2008
The paper by Fratz et al. describes the follow-up of 188 children who had balloon aortic valvuloplasty (AoVP) between 1986 and 2004. Moderate or severe aortic regurgitation occurred more often in the 68 neonates--in whom there was significant early mortality--than in the 120 older children; however, AoVP produced a satisfactory ...
Akat K - - 2009
Calcific aortic valve stenosis is the result of regulated cell processes. The histological hallmarks are inflammation and a remodelling of the extracellular matrix leading to bone formation. In the last 15 years the view has changed from it being an unmodifiable degenerative disease to an active biological process regulated by ...
Nistri Stefano - - 2008
Aortic valve stenosis is a common disease. Despite this, the diagnosis may often be missed; a significant proportion of patients are still identified at post-mortem examination, and 5% of operations are performed at end stage. Unrecognized aortic valve stenosis is an important cause of anesthetic mortality. One reason for failing ...
Henaine Roland - - 2008
We report a case with very early antenatal diagnosis of aortico-left ventricular tunnel (ALVT) at 22 weeks of pregnancy. Early recognition of ALVT by antenatal ultrasound allows prompt neonatal management and avoidance of harmful aortic valve regurgitation. The present case is unique because of the conjunction of very early antenatal ...
Svensson Lars G - - 2008
BACKGROUND: Recent US and European registries have indicated 30% to 60% of patients with critical valvular aortic stenosis (AS) are not treated surgically, usually due to advanced age and comorbidities. We report on a Food and Drug Administration approved feasibility study of a less invasive transcatheter approach to potentially treat ...
Xenikakis Theocharis - - 2008
We describe the case of a 53-year-old man with a severely stenotic bicuspid aortic valve combined with an unruptured aneurysm of the left sinus of Valsalva and an aberrant left coronary artery. The patient was successfully treated with aortic valve replacement and closure of the aneurysm. It is well known ...
Feuchtner Gudrun M - - 2008
OBJECTIVE: In clinical practice, 64-MDCT coronary angiography is increasingly being used for exclusion of coronary artery disease. Therefore, the purpose of this study was to evaluate whether aortic valve regurgitation can be diagnosed with 64-MDCT in comparison with transthoracic echocardiography. MATERIALS AND METHODS: Eighty-one consecutive patients were examined with ECG-gated ...
Pettersson Gösta B - - 2008
OBJECTIVES: Our purpose was to investigate a new approach to bicommissural repair of regurgitant aortic valves. BACKGROUND: Repair of regurgitant aortic valves is not widely accepted, but interest is increasing, particularly for bicuspid valves. We hypothesize that a systematic, segmental approach to morphology and corresponding morphology-directed repair will improve decision ...
Drolet Marie-Claude - - 2008
BACKGROUND AND AIM OF THE STUDY: Aortic valve sclerosis is fairly common and is currently seen as a marker of systemic atherosclerosis. For unclear reasons only a minority of those sclerotic valves will evolve to become stenotic suggesting that atherogenic factors alone are insufficient to explain the development of valve ...
Zimrin David A - - 2008
The prognosis for patients with symptomatic aortic stenosis is poor but is improved significantly by surgical aortic valve replacement. Unfortunately, many patients are refused surgery because of age, comorbidities, and hemodynamic instability. This report describes the successful use of balloon aortic valvuloplasty as a bridge to aortic valve bypass surgery ...
Mao Song Shou - - 2008
To establish the normal criterion of ascending aortic diameter (AAOD) measured by 64 multidetector computed tomography (MDCT) and electron beam computed tomography (EBT) based on gender and age. A total of 1442 consecutive subjects who were referred for evaluation of possible coronary artery disease underwent coronary computed tomographic (CT) angiography ...
Buklas Dimitrios - - 2008
We report a case on an early complication of a biological pericardial tissue valve in the aortic position that required emergency replacement. One of the three leaflets of the valve was stuck open in a fixed-open position and would not unfold in diastole. This resulted in severe aortic insufficiency, diagnosed ...
Fattouch Khalil - - 2008
BACKGROUND: Repair of prolapsed aortic valve leaflets has been considered a challenging technique for cardiac surgeons. In this paper we describe our surgical approach, "the chordae technique." It consists of the correction of aortic cusp prolapse by shortening the free margin length and of an adjustment of the leaflets coaptation ...
Schäfers Hans-Joachim - - 2008
BACKGROUND: Unicuspid anatomy of the aortic valve is infrequent but may require intervention by age 40 for severe regurgitation. We propose a new repair technique for the regurgitant unicuspid valve by converting it into a bicuspid aortic valve. METHODS: Between November 2003 and September 2007, 20 patients underwent regurgitant unicuspid ...
Togashi Mayuko - - 2008
Calcification of the aortic valve leads to stenosis or regurgitation or both. To clarify the mechanism of heart valve calcification, comparative studies using histological and ultrastructural examinations were performed of calcified aortic valves. These valves were obtained at valve replacement surgery from 11 patients with rheumatic aortic valvular disease (RAVD), ...
Labrousse Louis - - 2008
A key element to the success of aortic valve reimplantation (David's procedure) is the position of the aortic annulus in the Dacron tube (DuPont, Wilmington, DE). The variable level of the right ventricular insertion can cause technical difficulties, especially when the right ventricular insertion occurs above the aortic annulus. To ...
Sachdev Vandana - - 2008
OBJECTIVES: Our goal was to determine the prevalence and characteristics of aortic valve disease in girls and women with monosomy for the X chromosome, or Turner syndrome (TS). BACKGROUND: Complications from congenital aortic valve disease are a major source of premature mortality in TS, but accurate data on the prevalence ...
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 ...
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