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Iio Kenichiro - - 2008
BACKGROUND: The accuracy for the detection of coronary stenosis by multidetector row computed tomography (MDCT) has been getting more recognition. However, the usefulness of MDCT in patients with chronic kidney disease (CKD) has not been confirmed. METHODS: Weanalyzed 19 consecutive patients with asymptomatic diabetic CKD who underwent both MDCT and ...
Protopapas Aristotle D - - 2008
OBJECTIVE: The valved conduit Contegra (bovine jugular vein) has being implanted for more than 7 years in the right ventricular outflow tract and it is noted that the available reports have been mixed. The aim of this study is to review the reported evidence in the literature. METHODS: Search of ...
Badero Olurotimi J OJ Division of Nephrology, Emory University School of Medicine, Atlanta, GA, USA. - - 2008
The segment of the vein mobilized for arterial anastomosis in the creation of an arteriovenous fistula (AVF) is the swing segment. This segment may experience turbulent flow and altered shear mechanical stress that result in stenosis. We sought to determine the frequency of stenotic lesions in the swing segment. Case ...
Van Den Broek T - - 2007
Although early vascular complications of the Angio-Seal closure device have been well described, little is known about late vascular complications due to this device. The aim of this paper is to discuss late femoral stenosis associated with the use of the Angio-Seal closure device. A literature search was performed using ...
Steinhauser Matthew L - - 2007
Aortic stenosis is a common clinical problem. The development of symptoms usually precedes the development of left ventricular (LV) dysfunction. Therefore, patients with concomitant severe aortic stenosis and LV dysfunction comprise a minority with this condition, albeit a clinically challenging group to manage. Because the only proven therapy for aortic ...
Gutiérrez-Chico Juan Luis - - 2008
AIMS: The aim of the study was to validate a novel formula for aortic area, based on the principle of continuity equation (CE), that substitutes Doppler-derived stroke volume (SV) by SV directly measured with real-time three-dimensional (RT3D) echo and semi-automated border detection. RT3D has proved outstanding accuracy for left ventricular ...
Schrope Donald P - - 2007
OBJECTIVES: Describe the clinical, electrocardiographic (ECG), radiographic and echocardiographic findings in cats with isolated pulmonary artery stenosis. Assess the usefulness of systolic and diastolic Doppler measurements at predicting stenosis severity. BACKGROUND: Pulmonary artery stenosis is an infrequent congenital cardiac defect in humans that has not been reported in cats. In ...
Leesar Massoud A - - 2007
The assessment of the left main coronary artery (LMCA) stenosis by angiography is not reliable, and noninvasive tests are incapable of discriminating ischemia caused by LMCA versus other stenoses. Among patients with LMCA stenosis, both fractional flow reserve and intravascular ultrasound parameters would determine the severity of stenosis and predict ...
Antón-Pacheco Juan L - - 2007
Congenital bronchial stenosis is a very uncommon condition in children. A full-term neonate showed severe respiratory distress soon after birth. Bronchoscopy and spiral computed tomography with multiplanar reconstruction disclosed a short stenosis of the left main bronchus, next to the carina, and another stenosis in the intermediate bronchus with air ...
Vijayalakshmi Kunadian - - 2007
The impact of chronic coronary obstructions on resting blood flow in stable cardiac patients and the response to percutaneous coronary intervention (PCI) using the TIMI frame count method has not been well documented. We studied the impact of coronary artery stenosis severity on the corrected TIMI frame count (cTFC) in ...
Violas Philippe - - 2007
Chondrodysplasia punctata (CDP) is a rare skeletal dysplasia characterized by stippled epiphyses during infancy. The frequency is probably underdiagnosed because of the large heterogeneity in this group. Many genotypic variations exist. Although cervical instability is commonly seen in many skeletal dysplasias, cervical spine stenosis associated with CDP is very rare. ...
Fernandes Marlos R - - 2007
BACKGROUND: Intravascular ultrasound (IVUS) can detect atherosclerotic compromise in coronary segments where conventional angiography cannot. However, IVUS is more invasive, expensive and laborious than angiography. We compared the detection of stenosis by IVUS and angiography and identified angiographic predictors of severe luminal stenosis on IVUS in patients with angiographically-intermediate coronary ...
Tanaka Hidemasa - - 2007
BACKGROUND: Recent advancements in 16-slice multidetector-row computed tomography (16-slice MDCT) provide for non-invasive assessment of not only coronary artery disease (CAD), but also myocardial properties and the anatomy of the whole heart. The purpose of the present study was to investigate whether the aortic valve area (AVA) in patients with ...
Grajo Joseph R - - 2007
To determine if a significant contralateral stenosis affects interpretation tables of the ipsilateral internal carotid artery's degree of stenosis in duplex Doppler ultrasound, the records of 307 patients with carotid duplex ultrasound studies with an angiogram performed within 3 months without intervening intervention were retrospectively reviewed for peak systolic velocity, ...
Hountis P - - 2007
Hypertrophic cardiomyopathy (HCM) is a condition of unknown etiology with thickening of the interventricular septum. It is better defined as a genetic disorder of autosomal dominant inheritance with variable left ventricular hypertrophy and symptoms. HCM has been rarely reported in association with other causes of hypertrophy such as hypertension and ...
White John J - - 2007
BACKGROUND: The reliability of dialysis venous pressure (VP) in detecting stenosis is controversial. A mathematical model may help to resolve the controversy by providing insight into the factors that influence static VP. DESIGN, SETTING, PARTICIPANTS, AND MEASUREMENTS: This study used inflow artery and outflow vein luminal diameters from duplex ultrasound ...
Seo DongMan - - 2007
We describe a modified simple sliding aortoplasty for supravalvar aortic stenosis. This technique is easier, has a more physiologic approach, and has the advantage of not using foreign material to provide aortic growth potential in children. For the patients presented in this study, the mid-term results of modified simple sliding ...
Madar Igal - - 2007
Myocardial perfusion imaging plays an important role in clinical management of coronary artery disease, but the most commonly used radionuclides significantly underestimate the severity of coronary artery stenosis. The objective of this study was to evaluate the potential clinical utility of the PET compound (18)F-fluorobenzyl triphenyl phosphonium ((18)F-FBnTP) and characterize ...
Kagadis George C - - 2007
Pulmonary artery sling is frequently accompanied by tracheal anomalies other than local compression, including focal/segmental or extensive stenosis (ring-sling complex). Recent advances in computed tomography technology, such as multidetector computed tomography with 3-dimensional imaging (3-D) and virtual bronchoscopy (VB), offer important and accurate information of the entire tracheobronchial tree. We ...
Chakrabarti Shanta - - 2007
Pulmonary venous stenosis has been a challenge to paediatric cardiologists and surgeons. In spite of significant improvements in the management and outcome of various congenital cardiac problems, the prognosis of this condition continues to be dismal. Acquired stenosis of the pulmonary veins has been described in the adult population, especially ...
Abdelkafy Wael M - - 2007
OBJECTIVE: To assess the applicability and complications of slide tracheoplasty in the management of subglottic and upper tracheal stenosis in experimental animals. DESIGN: Subglottic stenosis was induced in 10 dogs by cauterizing the subglottic area and the upper 3 to 4 cm of the trachea. After 21 days, the severity ...
Haghi Dariusch D Medical Department, University Hospital Mannheim, Mannheim, - - 2007
We sought to validate the recently introduced peak to mean pressure decrease ratio (PMPDR), using the Gorlin formula and a hybrid method which combines cardiovascular magnetic resonance (CMR)-derived stroke volume with transaortic Doppler measurements to calculate aortic valve area (AVA). Data analysis in 32 patients with severe (AVA <or= 0.75 ...
van Tits Lambertus J H - - 2007
Exogenous radiolabeled annexin A5 is taken up by atherosclerotic tissue. We measured endogenous plasma annexin A5 and circulating oxidized low-density lipoprotein (oxLDL), a biochemical marker of atherosclerosis, in men with either severe angiographically determined coronary stenosis (n=90) or no or only minor stenosis (n=96). Men without history of cardiac disease ...
Takahashi S - - 2007
PURPOSE: To determine the effects of detector configuration, as well as vessel orientation, on the depiction accuracy of arterial stenosis using four-channel multidetector-row helical computed tomography (MDCT) angiography in vitro. MATERIAL AND METHODS: Five acrylic vessel phantoms (3 mm in diameter with 25 or 50% stenosis, or 5 mm with ...
Fawzy Mohamed Eid - - 2007
BACKGROUND: Significant infundibular stenosis and significant tricuspid regurgitation (TR) occasionally result from severe pulmonary valve stenosis in adults, and these 2 conditions have an adverse impact on morbidity and mortality in patients who undergo corrective surgery. The goal of this study was (1) to evaluate the long-term (up to 17 ...
Dharmakumar Rohan - - 2007
OBJECTIVE: This study investigates whether cardiac phase-resolved steady-state free precession (SSFP) magnetic resonance imaging can be used to detect regional myocardial oxygen deficits (MODs) and other functional changes (wall motion and ejection fraction) caused by coronary artery stenosis in a canine model. MATERIALS AND METHODS: Subsequent to changing the degree ...
Rafeiyian Sima - - 2007
To report calcified aortic stenosis due to hypercholesterolemia in two siblings. A 13-year-old boy with a history of dyspnea on exertion and a systolic murmur of aortic stenosis was referred to our center. Echocardiography showed combined valvular and supravalvular aortic stenoses with a good left ventricle systolic function and severe ...
Gurel Emre - - 2007
Discrete membraneous subaortic stenosis is an uncommon cause of left ventricular outflow tract obstruction. Although its relationship to infective endocarditis is well defined, the expected site of vegetation is over the aortic valve. We report on a 46-year-old man who had a discrete membranous subaortic stenosis, complicated with infective endocarditis, ...
Stout Karen K - - 2007
Aortic stenosis is a common condition, particularly in the elderly. The treatment is surgical, and any patient with symptomatic severe aortic stenosis should be considered for aortic valve replacement. Aortic stenosis causes an increase in afterload to the left ventricle, which when severe can lead to hemodynamic instability. Although the ...
Verberne Hein J - - 2007
OBJECTIVE: The identification of patients with a significant proximal right coronary artery (RCA) is of clinical relevance since it may direct diagnostic and therapeutic strategies. This study was performed to determine parameters of (201)Tl RV perfusion SPECT which can be used to discriminate between proximal and distal RCA stenosis in ...
Zhang Wayne W - - 2006
PURPOSE: To compare conventional angiography (CA) and rotational angiography (RA) to assess the degree of angiographically-measured stenosis versus cross-sectional area (CSA) stenosis in an in vitro carotid model. METHODS: Various grades of stenosis were created by adhering different amounts of silicone rubber sealant onto the inner wall of clear, radiolucent ...
Imamaki Mizuho - - 2006
A kink in the internal thoracic artery (ITA) is a rare postoperative complication after coronary artery bypass surgery. The kink can be accompanied by significant stenosis and has been observed after the ITAs are harvested by the skeletonization method. In this report, we present two cases in which early postoperative ...
Wu Yen-Wen - - 2007
BACKGROUND: Atherosclerotic stenosis of extracranial carotid arteries is an important cause of ischemic stroke in Taiwan, an ethnic Chinese population. Concurrent atherosclerotic arterial disease is an important issue in the management of patients with carotid stenosis, but its prevalence and extent are unknown. METHODS: One hundred and sixty-three consecutive patients ...
Jaffery Zehra - - 2007
Pulmonary artery compression in adults resulting from tumors is an uncommon condition often associated with poor prognosis. Among the imaging modalities used for diagnosis, the role of trans thoracic echocardiography in identifying secondary pulmonic stenosis due to extrinsic or intrinsic compression and more importantly the physiologic significance has been increasingly ...
Griffiths Leigh G - - 2006
Valvular pulmonic stenosis has been successfully treated in dogs via minimally invasive transcatheter balloon dilation procedures for almost 20years. Supravalvular pulmonic stenosis however is not amenable to balloon dilation procedures. Although several surgical procedures are described for treatment of pulmonic stenosis, the morbidity and mortality of these procedures are significantly ...
Kashima Ichiro - - 2006
A 24-year-old woman who had undergone excision of the membrane for discrete subaortic stenosis when 6 years old displayed recurrent subaortic stenosis and had a small aortic annulus, with a peak pressure gradient of 60mmHg. We chose to perform the Konno operation with a mechanical valve. This released the left ...
Rosetti Mihaela - - 2006
We describe the case of a patient with the Carney syndrome and several resections for recurrent left atrial myxomas who underwent autotransplantation of the heart with resection of the left and right atria and reconstruction of both atria with bovine pericardium. She subsequently presented with severe shortness of breath, ascites, ...
Scheiber Dora - - 2006
BACKGROUND: Williams-Beuren syndrome is a multisystem developmental disorder caused by a microdeletion at chromosome 7q11.23. In its classic form it includes dysmorphic facial features, joint contractures, retardation of growth and mental development, gregarious personality, visuospatial cognitive deficits, hypercalcemia, primary or secondary hypertension and cardiovascular disorders. AIM: Clinical diagnosis of Williams-Beuren ...
Phillips David - - 2006
The prevalence of aortic stenosis has been increasing in recent decades, and nurse anesthetists are more likely to encounter this problem as the population ages. Fortunately, the widespread use of echocardiography has expanded our understanding of valvular heart disease. The purpose of this course is to evaluate the current literature ...
White John J - - 2006
Randomized controlled trials have not shown that surveillance of graft blood flow (Q) prolongs graft life. Because luminal diameters affect flow resistance, this study examined whether the influence of diameters on Q can explain the limitations of surveillance. Inflow artery and outflow vein diameters were determined from duplex ultrasound studies ...
Wang Xin - - 2006
BACKGROUND AND PURPOSE: Small subcortical infarcts (SSI, maximum lesion diameter < or =2.0 cm) are usually considered as infarcts caused by small vessel disease. However, SSI can also be associated with large artery occlusive disease such as middle cerebral artery (MCA) stenosis. We performed a prospective study to investigate the ...
Arrington Cammon B - - 2006
Nonsyndromic supravalvar aortic stenosis (SVAS) is an obstructive vascular disorder often inherited in an autosomal dominant manner. With pulmonary artery involvement, stenotic lesions are nearly always peripheral or downstream of the pulmonic valve. In rare cases when the supravalvar pulmonic region is affected, the stenoses usually improve over time and ...
Gould Jon Charles - - 2006
BACKGROUND: Gastrojejunostomy stenosis after laparoscopic Roux-en-Y gastric bypass is a common occurrence. The incidence varies widely among reported series. We evaluated the impact of circular stapler size on the rate of stenosis and weight loss. METHODS: Our initial technique utilized a 21-mm circular stapler to construct the gastrojejunostomy. We switched ...
Jönsson Anders - - 2006
OBJECTIVE: To determine mortality after coronary artery bypass grafting (CABG) in relation to degree of left main coronary artery (LMCA) obstruction. DESIGN: All patients without LMCA stenosis (n=3370), with low-grade stenosis (n = 261), high-grade stenosis (n = 224) or total occlusion of the LMCA (n = 15) were followed ...
Arora G - - 2006
Familial homozygous hypercholesterolemia is a rare disease with diverse clinical presentations. Patients often present with cutaneous xanthomas, particularly in the Achilles' tendon. They may have significant cardiovascular involvement, including premature atherosclerotic coronary artery disease and valvar and supravalvar aortic stenosis. Standard therapy includes diet modulation, pharmacotherapy, and lipid apheresis. Rarely, ...
Bartlett E S - - 2006
PURPOSE: Carotid stenosis quantification traditionally uses measurements of narrowest stenosis diameter. The stenotic carotid lumen, however, is often irregularly shaped. New PACS workstation tools allow for more precise calculation of carotid geometry. We compare the narrowest stenosis diameter with 2D area stenosis measurements, with the hypothesis that the narrowest diameter ...
Demondion Xavier - - 2006
OBJECTIVE: The purpose of this study was to evaluate the feasibility and potential usefulness of power Doppler ultrasonography (PDU) in the assessment of changes in arterial cross-sectional area in the thoracic outlet during upper limb elevation. METHODS: Forty-four volunteers and 28 patients with a clinical diagnosis of arterial thoracic outlet ...
Cury Ricardo C - - 2006
BACKGROUND: Sixteen-slice multi-detector computed tomography (MDCT) permits reliable noninvasive detection of significant coronary stenosis based on qualitative visual assessment. The purpose of this study was to determine the accuracy of MDCT to quantify the degree of coronary stenosis as compared to quantitative coronary angiography (QCA) using two different reconstruction methods. ...
Walker J - - 2006
OBJECTIVES: To determine velocity thresholds for diagnosing 'carotid stenosis >70%' and whether Vascular Studies Units in the United Kingdom used ECST or NASCET measurement methods. DESIGN: Questionnaire to 102 members of the Society of Vascular Technology of Great Britain and Ireland. RESULTS: One quarter (26%) of respondents reported that their ...
Cusack R J - - 2006
A 68-year-old woman, who had undergone coronary artery bypass surgery 5 months previously, was presented with cough, breathlessness and an elevated D-dimer. She was initially thought to have suffered a pulmonary embolus. A ventilation/perfusion scan demonstrated tracheal stenosis, which required dilation and endobronchial stent deployment. Tracheal stenosis is a well-recognised ...
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