Search Results
Results 451 - 500 of 1493
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El Khoury G - - 2004
OBJECTIVES: In regurgitant tricuspid aortic valves, cusp prolapse may be isolated or associated with dilatation of the proximal aorta. Newly appearing cusp prolapse can also appear after an aortic valve sparing operation (AVSO) and be responsible for residual aortic regurgitation. In this report, we describe our experience in repairing prolapsing ...
Di Bello Vitantonio - - 2004
BACKGROUND: The aim of this study was to assess the myocardial reflectivity pattern in severe aortic valve stenosis through the use of integrated backscatter (IBS) analysis. Patients with aortic stenosis (AS) were carefully selected in the Department of Cardiology. METHODS AND RESULTS: Thirty-five subjects (AS: valve orifice < or =1 ...
Botkin N F - - 2004
The diagnosis and treatment of aortic valve disease can be challenging for the clinician. Aortic regurgitation (AR) may be evaluated with Doppler echocardiography or catheterization. Medical therapy consists of vasodilators. Surgery may be appropriate for patients with symptoms, left ventricular dilatation or diminished left ventricle systolic function. Aortic stenosis (AS) ...
Brown Valerie A - - 2004
A 4-year-old German Shepherd was evaluated for progressive depression, lethargy, anorexia, and dyspnea. Despite treatment with diuretics and antibiotics, the dog died. Based on clinical, radiographic, and pathologic findings, the diagnosis was heart failure resulting from aortic valvular endocarditis.
Mickelsen Steven - - 2004
We evaluated whether analysis of aortic flow could be useful for determining the functional significance of left ventricular outflow gradients and for optimizing pacing therapy in patients with hypertrophic cardiomyopathy (HOCM). METHODS: Doppler echocardiography was performed in 32 patients with HOCM. Eleven patients with pacemakers (PPM) also underwent treadmill and ...
Djaiani George - - 2004
BACKGROUND AND PURPOSE: The presence of new ischemic brain infarcts, detected by diffusion-weighted magnetic resonance imaging (DW-MRI), have been reported in considerable number of patients after cardiac surgery. We sought to determine the role of proximal thoracic aortic atheroma in predicting embolic events and new ischemic brain lesions in patients ...
Martins Jose D - - 2004
OBJECTIVES: The purpose of this study was to review our 35 years of experience with aortico-left ventricular tunnel (ALVT), with emphasis on diagnosis, surgical details, and follow-up. BACKGROUND: Aortico-left ventricular tunnel is a rare congenital anomaly. Neonatal surgery has been advocated in all due to long-term concern of valvar aortic ...
Nakajima M - - 2004
Myocardial hibernation is recognised as chronic hypoperfusion of the myocardium and its functional recovery after surgical revascularisation has been described. A case of surgery for complex lesions including severe aortic valve regurgitation, coronary ostial stenosis, and aortic calcification (porcelain aorta) caused by Takayasu's arteritis is presented. The onset of left ...
Akins Cary W - - 2004
BACKGROUND: Whether minimally diseased aortic valves should be replaced during other necessary cardiac operations remains controversial. Part of the decision-making process in that issue revolves around the risks of subsequent aortic valve replacement. This study evaluated the results of aortic valve replacement in patients following prior cardiac surgery. METHODS: From ...
Wu Wen-Chih - - 2004
Stress echocardiography is a safe and valuable test to aid in the diagnosis and management of patients with aortic valve disorders. In patients with suspected severe aortic stenosis (AS) and low aortic gradients secondary to low cardiac output, dobutamine echocardiography distinguishes those patients with contractile reserve (CR) from those without ...
Knobloch Karsten - - 2004
Acute endocarditis complicated by aortic valve regurgitation is an uncommon finding in adults with surgical untreated tetralogy of Fallot (TOF). The hemodynamic consequences for both, the right and left ventricles, are significant. However, the right ventricle may be in a disastrous situation, since a compromised right ventricle from longstanding pressure ...
D'Alfonso Alessandro - - 2004
BACKGROUND: Cryopreserved homograft is currently considered an excellent choice for the replacement of a diseased aortic valve in adults and it is the first choice for 1 with aortic endocarditis. The aim of this study was to analyze our single institution experience with the cryopreserved aortic homograft by a mid-term ...
Onorati Francesco - - 2004
Despite the increase in car accidents, aortic valve injury from blunt trauma remains rare. In one case, a 30-year-old Marfan male, who was under observation at our outpatient clinic, suffered from aortic regurgitation due to a tear in the left coronary cusp of a previously echocardiographically normal valve. Acute ventricular ...
Natsuaki M - - 2004
AIM: Few studies have been performed about the risk factors associated with perioperative myocardial damage in patients undergoing valve surgery for severe aortic stenosis. METHODS: To assess the prevalence of perioperative myocardial damage, we studied 103 consecutive patients with aortic stenosis. Perioperative myocardial damage (PMD) was diagnosed by both enzymatic ...
Taneja Indu - - 2004
Autonomic dysfunction and aortic stenosis share several clinical characteristics, including, in severe cases, syncope. Both illnesses tend to manifest later in life, and most cases are idiopathic in origin. In a short period of 4 weeks, the authors noted that three patients out of 36 referrals for autonomic dysfunction also ...
Lahtinen Jarmo - - 2004
During the last 2 years, 103 aortic saphenous vein graft anastomoses were performed in 68 patients undergoing off-pump coronary artery bypass by using the Symmetry Bypass System Aortic Connector. Of these patients, 2 died during the early postoperative period. In the first patient, after an episode of ventricular fibrillation and ...
Lund Ole - - 2004
BACKGROUND AND AIM OF THE STUDY: Left ventricular (LV) hypertrophy is the underlying basis for longevity after aortic valve replacement (AVR) for aortic stenosis (AS). However, a detailed account of changes in LV mass and function in the long term after AVR and identification of the determinants of such changes ...
Tanaka Hiroyuki - - 2004
Papillary fibroelastomas of the heart are relatively rare benign tumors and although they can be symptom free, symptoms such as cerebral ischemia and cardiac infarction can be lethal. It is important to diagnose this tumor using echocardiography, because lethal embolisms can be prevented by surgical resection. Recurrence of this tumor ...
Matsushita Shonosuke - - 2004
BACKGROUND: High-frequency QRS potentials are sensitive to myocardial ischemia. The aim of this study was to evaluate the usefulness of high-frequency QRS potentials as a marker of myocardial dysfunction after cardiac surgery. METHODS: Seventy patients undergoing coronary artery bypass grafting or heart valve surgery were involved. High-frequency QRS potentials were ...
Fernando Dinesh M G - - 2004
A 21-year-old primi, with a period of gestation of 35 weeks, was found collapsed in the toilet of a maternity hospital in Colombo, Sri Lanka. She had been admitted five days previously and echocardiography had detected a tight aortic stenosis with grade I aortic regurgitation. At autopsy, the heart showed ...
Weerasinghe Arjuna - - 2004
BACKGROUND: Despite limitations the transvalvular gradient (TVG) still is commonly used in aortic stenosis when patients are referred for aortic valve replacement. We wished to ascertain if it had a role in predicting outcome from valve replacement rather than as an indicator of severity, specifically investigating if the TVG affected ...
Sripathi Vangipuram Canchi - - 2004
BACKGROUND: This study aims to find the fundamental differences in the mechanism of opening and closing of a normal aortic valve and a valve with a stiff root, using a dynamic finite element model. METHODS: A dynamic, finite element model with time varying pressure was used in this study. Shell ...
Botkin Naomi F - - 2004
Aortic stenosis is a common valvular abnormality. Surgical valve replacement is the standard of care for symptomatic patients with severe aortic stenosis and is appropriate for certain asymptomatic patients. Statin therapy may slow progression of the disease. Contrary to conventional wisdom, vasodilator therapy may in fact be safe and effective ...
Cribier Alain - - 2004
OBJECTIVES: This study was done to assess the results of percutaneous heart valve (PHV) implantation in non-surgical patients with end-stage calcific aortic stenosis. BACKGROUND: Replacement of PHV has been shown to be feasible in animals and humans. We developed a PHV composed of three pericardial leaflets inserted within a balloon-expandable ...
Ando Masaki - - 2004
A 31-year-old adult with an aortico-left ventricular tunnel (ALVT) arising from the right aortic sinus is reported. Preoperative transesophageal echocardiography demonstrated a ruptured sinus of Valsalva with severe aortic valve regurgitation which originated from the right coronary sinus entering the outlet portion of the left ventricular outflow tract. Operation revealed ...
Kawamata Kazuya - - 2004
We report a case of fetal congenital heart disease prenatally diagnosed as critical aortic valve stenosis at 25 weeks of gestation. Fetal echocardiography demonstrated severe mitral regurgitation, aortic valve stenosis, hypocontractility of the left ventricle, and showed retrograde flow in the aortic arch like HLHS (hypoplastic left heart syndrome). However, ...
Djavidani Behrus - - 2004
AIM: The primary objective of our study was to assess the time course of left ventricular remodeling after the Ross procedure with the use of cine magnetic resonance imaging (MRI). METHODS: In a prospective study, 10 patients with isolated aortic valve disease were examined prior to aortic valve surgery, as ...
Calafiore Antonio Maria - - 2004
BACKGROUND: The aim of this study was to evaluate in elective patients the early and midterm results of partial clamping of the brachiocephalic trunk (BCT) for total ascending aorta replacement (TAAR) without circulatory arrest. Contraindications to the procedure were BCT/aortic arch calcifications and chronic aortic dissection. METHODS: The right radial ...
Robles Carlos - - 2004
One hundred and nine cases of aortic aneurysm or dissection at the Cardiovascular Center of Puerto Rico and the Caribbean, during the period of 18 August 1992 to 30 September 1997, were reviewed. Twenty seven cases had aortic dissection, fourteen type A and eight type B, and five were abdominal. ...
Farhat Fadi - - 2004
Ministernotomy (MS) is a well-known procedure developed in the past ten years along with the rise of minimally invasive cardiac surgery. Upper, mid, or inferior partial sternotomies allow coronary surgery, as well as aortic and mitral valve approaches. Contrary to anterior thoracotomy, access to the great vessels is sometimes easy, ...
Takai Hideaki - - 2004
The assessment of prosthesis patient mismatch (PPM) for small aortic annulus is important for prognosis after aortic valve replacement (AVR). Recent investigations have demonstrated that PPM occurs in AVR patients with an indexed effective orifice area (iEOA) of less than 0.85 cm2/m2. We investigated hemodynamic performance and left ventricular mass ...
Paul Subroto - - 2004
Aortic valve replacement (AVR) can be done safely in patients with severe aortic stenosis (AS) and depressed ventricular function (ejection fraction < or =35%). Dobutamine echocardiography is useful to identify AS patients with contractile reserve who will benefit from AVR and can be used for risk stratification of these patients. ...
Nikolić Valentina - - 2004
Investigations were carried out on 55 monkey (Cercopithecus aethiops, Macaca fascicularis) hearts by stereomicroscopic dissection and measurements. Latex-injected specimens and corrosion casts showed that, as in humans, the hearts were usually (in 98.2% of the cases) supplied by two coronary arteries (CAs)--the left (LCA) and the right coronary artery (RCA), ...
Patsilinakos Sotirios P - - 2004
BACKGROUND: Myocardial perfusion scintigraphy has been used by some investigators for the diagnosis of coronary artery disease (CAD) in patients with mild, moderate, and moderate to severe aortic stenosis, with various results. The aim of this study was to assess the safety and diagnostic accuracy of adenosine stress myocardial perfusion ...
Gorgulu Sevket - - 2003
AIM: Recently, the close relationship between aortic stiffness and cardiovascular mortality has aroused the interest of investigators in carrying out studies related to aortic stiffness. This study aims to investigate the aortic stiffness parameters in patients with cardiac syndrome X, a disorder that is believed to be a generalized disturbance ...
Glower Donald D. - - 2003
Aortic regurgitation may be the most treacherous of the valvular lesions due to subtlety of symptoms and physical findings and due to difficulty in timing surgical intervention to prevent permanent cardiac dysfunction. Cardiac imaging (eg, echocardiography or magnetic resonance) is critical to quantify the degree of regurgitation and to detect ...
Tasca Giordano - - 2003
BACKGROUND: Left ventricular outflow tract dynamic obstruction may develop after aortic valve replacement for aortic stenosis with a higher mortality and morbidity and may persist until left ventricular mass regression occurs. The aim of this study was to ascertain the effects of myectomy-myotomy on the left ventricular mass and mean ...
Dunning Joel - - 2003
A best evidence topic in cardiac surgery was written according to a structured protocol. The question addressed was whether there is a group of patients who would benefit from a prophylactic intra-aortic balloon pump prior to cardiac surgery. Altogether 110 papers were found using the reported search, of which seven ...
Climent Vicente E - - 2003
BACKGROUND: In the study of severity of aortic stenosis many different methods derived from transthoracic echocardiography are used. Their principal limitations are left ventricular dysfunction and calcified aortic valve. The objective of this study was to assess the utility of a described echocardiographic index: the fractional shortening-velocity ratio (FSVR=FS/4Vmax2) in ...
Tarantini Giuseppe - - 2003
OBJECTIVE: The influence of left ventricular (LV) dysfunction on survival of patients with severe aortic stenosis is poorly characterized. Few data are available about preoperative predictors of cardiac mortality and LV function recovery after aortic valve replacement of such patients. The aim of our study was to examine the outcome ...
Moreno R - - 2003
BACKGROUND: Doppler Tissue Imaging (DTI) has been evaluated in ischaemic heart disease and some cardiomyopathies. In patients with aortic stenosis (AS), left ventricular contraction is slowered. This study aimed to evaluate the possible role of the measurement of isovolumic contraction time (ICT) by DTI in the evaluation of AS severity. ...
BinEsmael Taha M - - 2003
The case is presented of dynamic left ventricular mid-cavitary obstruction that complicated the postoperative course following aortic valve replacement and coronary artery bypass grafting. The condition resolved with appropriate medical management, without further surgical intervention. It is hypothesized that this was due to both concentric left ventricular hypertrophy and direct ...
Knez Igor - - 2003
BACKGROUND AND AIM OF THE STUDY: Genetic variants of the angiotensin-converting enzyme (ACE) cascade may influence left ventricular myocardial mass (LVMM) regression after aortic valve surgery. Postoperative long-term changes in LV indices were investigated in patients with asymptomatic aortic regurgitation (AR) and symptomatic aortic stenosis (AS) and related to alleles ...
Kang Hyun-Jae - - 2003
To evaluate the value of Doppler-derived dP/dt as a predictor of postoperative left ventricular (LV) systolic function in patients with chronic aortic regurgitation, we evaluated 29 patients who underwent aortic valve replacement (n = 17) or valve repair. Doppler-derived dP/dt was determined from the continuous wave Doppler signal of the ...
Arom Kit V - - 2003
This is a review of some of the outstanding adult cardiac surgical papers presented during the first 50 years of the Southern Thoracic Surgical Association to commemorate the 50th Anniversary meeting. Since the founding of the Southern Thoracic Surgical Association in 1954 there have been a total 512 adult cardiac ...
Novaro Gian M - - 2003
BACKGROUND AND AIM OF THE STUDY: Although well described in pediatric populations, series of congenital unicuspid aortic valves in adults are limited and mainly arise from surgical reports. Also, the incidence of this rare congenital anomaly has never been estimated in an adult echocardiographic population. METHODS: Between January 1990 and ...
Kawahito Koji - - 2003
BACKGROUND: Coronary malperfusion associated with aortic dissection is relatively rare, but when it occurs, it is fatal to the patient. To salvage such moribund patients, aggressive coronary revascularization concomitant with aortic repair is essential. We review the surgical results and mechanism of malperfusion in a group of 12 patients with ...
Iwase Jinichi - - 2003
Stenotic lesion of the left coronary artery is an unnoticed but complicating feature of supravalvular aortic stenosis (SAS). We present successful repair of SAS with left coronary ostial stenosis. A 9-year-old girl was diagnosed as Williams syndrome associated with SAS. She had no symptoms of angina but cardiac catheterization revealed ...
D'Souza Michael G - - 2003
Hypereosinophilia can cause severe endomyocardial fibrosis with subsequent restrictive cardiac disease and endocardial lesions. We present a case of a 37-year-old man with known hypereosinophilia, followed with yearly echocardiograms, who presented acutely with myocardial infarction and aortic outflow tract obstruction. At surgery, a broad based eosinophilic thrombus was found that ...
Gandy Stephen J - - 2003
To evaluate differences in the magnitude and time course of renal cortical contrast uptake in patients with minimal, moderate, and severe renal artery stenosis (RAS) using contrast-enhanced magnetic resonance renography (CE-MRR). CE-MRR was performed on 56 patients with renovascular disease using a three-dimensional volume interpolated breath-hold examination (VIBE) perfusion sequence. ...
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