Search Results
Results 251 - 300 of 581
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Das P - - 2000
Significant aortic stenosis is prevalent amongst elderly people. It may be subclinical, manifesting only as a murmur, but can still cause unexpected death with little warning after symptoms develop. Recent studies have highlighted the unreliability of the classical clinical signs of severe aortic stenosis, leading to concern that some patients ...
Stamm C - - 2000
OBJECTIVE: A number of patients with Williams syndrome or other forms of elastin arteriopathy have stenoses of pulmonary arteries in addition to supravalvular aortic stenosis. We sought to investigate the effect of the degree of pulmonary arterial stenosis on the prognosis after an operation for supravalvular aortic stenosis to help ...
Atsumi N - - 2000
A 27-year-old woman developed subaortic stenosis 19 years after double-outlet right ventricle repair. Subaortic stenosis was caused by a narrow ring of fibromuscular ridge associated with a bulge of the underlying septal muscle. The aortic valve was bicuspid and stenotic. We conducted extended septoplasty, replacing the aortic valve. Postoperative cineangiogram ...
Godin D A - - 2000
While still an uncommon cause of airway obstruction, the incidence of tracheal stenosis in adults has increased with the use of assisted ventilation. The etiology, diagnosis, and treatment of tracheal stenosis are discussed. Special attention is paid to post-intubation tracheal stenosis and to tracheal resection as its most successful treatment ...
Firschke C - - 2000
MCE can be used in the catheterization laboratory or in the operating room to provide rapid assessments of the functional significance of a coronary stenosis from direct arterial injections of microbubbles. In the past few years, the development of more stable microbubble contrast agents, and a better understanding of the ...
Mathiesen E B - - 2000
BACKGROUND AND PURPOSE: Knowledge of the reproducibility of a diagnostic method is important in order to evaluate its usefulness. Few studies have examined interobserver and intermethod agreement on ultrasound measurements of carotid stenosis. METHODS: Intersonographer agreement on ultrasound measurements of carotid plaque morphology and the estimated degree of stenosis by ...
Fesslova V - - 2000
We discovered supraventricular tachycardia with advanced hydrops in the setting of normal cardiac anatomy at 26 weeks of gestation which resolved successfully following administration of digoxin and flecainide to the mother. A female baby was born after a premature rupture of the membranes at 30.6 weeks. The neonate was in ...
Vas L - - 2000
PURPOSE: To report a large chronic tracheal foreign body, causing tracheal stenosis in an 11-yr-old girl. CLINICAL FEATURES: The history was suggestive of obstructive airways disease with secondary bronchiectasis. Physical findings were crepitations and rhonchi all over the chest. Blood gases were normal. Chest X-ray showed bronchiectasis and a ventilation ...
Grech V - - 2000
Tetralogy of Fallot is often found in association with a wide variety of other cardiac lesions, but is rarely found in association with lesions causing obstruction to the left ventricular inflow or outflow. Subaortic stenosis has only rarely been reported in association with tetralogy of Fallot. We report a patient ...
Kim H L - - 2000
An infundibular stenosis is defined by a dilated calyx draining through a narrowed infundibulum into a nondistended renal pelvis. We describe the use of ureteroscopy and the holmium:yttrium-aluminum-garnet (YAG) laser to successfully treat an infundibular stenosis in a 27-year-old woman who presented with left flank pain. The holmium:YAG laser is ...
Lin C R - - 1999
Pulmonary artery sling is an uncommon vascular anomaly and can be life threatening when it causes tracheal compression. We report on a 14-day-old boy who presented with respiratory distress soon after birth. A series of examinations showed tracheal stenosis due to a pulmonary artery sling. Surgery was performed with the ...
Droste D W - - 1999
BACKGROUND AND PURPOSE: Proper assessment of extracranial internal carotid artery high-grade stenosis and occlusion by extracranial color-coded duplex sonography (ECCD) is occasionally made difficult by shadowing, an unfavorable insonation angle, low flow velocity or volume, or a deep insonation depth. In these cases, echocontrast could be helpful to quantify the ...
Karpuz H - - 1999
In this study, which included 56 patients with aortic stenosis, the predictive value of the fractional shortening velocity ratio was evaluated. This Doppler index allowed detection of significant aortic stenosis (0.53 cm2/m2), with a positive predictive value of 93% and a negative predictive value of 92% for a cutoff value ...
Bermejo Javier - - 1999
Stress interventions have been classically combined with cardiac catheterization recordings to understand the hemodynamic principles of valvular stenosis. Indices of aortic stenosis such as pressure gradient and valve area were based on simple hydraulic principles and have proved to be clinically useful for patient management during a number of decades. ...
Galán G - - 1999
Postintubation tracheoesophageal fistulas (TEFs) are severe lesions that can be associated with tracheal stenosis and therapeutic difficulties. A case is reported of a woman with TEF and postintubation tracheal stenosis with 6.5 cm of affected trachea, and total esophageal exclusion. A tracheoplasty method is described patching the loss of the ...
Yokoya K - - 1999
BACKGROUND: The process of progression in coronary artery disease is unknown. METHODS AND RESULTS: The subjects were 36 patients with 36 objective vessels with clinically significant progression of coronary artery disease (>/=15% per year) in whom 4 serial coronary arteriograms (CAGs) were performed at intervals of approximately 4 months in ...
Imanaka K - - 1999
A 13-year-old boy, who had undergone a Rastelli procedure 8 years before, developed severe extracardiac conduit stenosis and infectious endocarditis. Sternal re-entry appeared to be dangerous and to require extensive adhesiolysis. Through a left anterior small thoracotomy, however, good exposure was obtained and the operation was performed safely and much ...
Yamada S - - 1999
Most nonmalignant upper tracheal stenoses are caused by prolonged endotracheal intubation or tracheostomy, and idiopathic stenosis is uncommon. A 43-year-old woman complained of increasing shortness of breath during exercise over a year prior to admission. She had no significant past medical history, including endotracheal intubation. Bronchoscopy and tracheal tomography revealed ...
Awan A N - - 1999
Platypnea-orthodeoxia is encountered in a variety of cardiac, pulmonary, and hepatic disorders. We report its occurrence in a 59-year-old man who had had combined external-beam and high dose-rate iridium brachytherapy for a stage I non-small-cell carcinoma of the right upper lobe 2 years earlier. The post-radiation course was complicated by ...
Susanto I - - 1999
A high-grade complex tracheal stenosis distal to a tracheostomy tube occurred in a patient with a chronic vegetative state. The stenosis was easily and rapidly dilated at bedside using commercially available percutaneous tracheostomy kit dilators. Following tracheal dilation, a larger tracheostomy tube was inserted, resulting in the splinting of the ...
Wright I A - - 1999
The aim of this study was to apply artificial neural networks (ANNs) to the problem of the diagnosis of aorto-iliac arterial disease on the basis of the profile of the common femoral artery (CFA) Doppler flow velocity waveform. The maximum frequency envelopes obtained from the CFA of 180 subjects were ...
Teragawa H - - 1999
BACKGROUND: Adenosine triphosphate stress thallium-201 single-photon emission computed tomography (ATP SPECT) is useful for diagnosis of coronary artery disease, but its usefulness for evaluating the severity of coronary artery stenosis has not been established. METHODS AND RESULTS: We performed region-of-interest analysis of short-axis images obtained by ATP SPECT in 31 ...
Beebe H G - - 1999
Management decisions regarding carotid artery disease are critically dependent on stenosis but have been made difficult because of conflicting methods used to determine such stenosis. The increasing use of duplex ultrasound scanning has conventionally depended on Doppler velocity measurement, an indirect method for calculating carotid stenosis. Recent technical advances have ...
Lim H K - - 1999
PURPOSE: To determine the diagnostic accuracy of Doppler ultrasonography (US) in the detection of high-grade stenosis or occlusion of the celiac artery (CA) and superior mesenteric artery (SMA) and validate the previously reported Doppler US criteria. MATERIALS AND METHODS: During a recent 36-month period, 82 patients were prospectively examined with ...
Abo M - - 1999
A 67-year-old man was intubated for one week and suffered from wheeze and dyspnoea three months after the extubation. Bronchoscopy revealed tracheal stenosis by a web, which subsequent biopsy showed to be granulation tissue. The stenosis was removed by laser therapy but the stenosis soon returned. As cardiac function was ...
Gielen H - - 1999
Doppler echocardiography allows accurate serial assessment of pulmonary valvar stenosis by measuring the velocity of the jet stream through the pulmonary valve. Between 1979 and 1997, we saw 174 patients with isolated pulmonary valvar stenosis. At admission their ages ranged from 9 days to 22.5 years. We measured the velocity ...
Kim Y M - - 1999
We investigated the catheterization and angiographic findings of 26 patients with Williams' syndrome to evaluate the natural course of supravalvar aortic stenosis and peripheral pulmonary arterial stenosis. The severity of the stenosis was correlated with age and body surface area in terms of the pulmonary arterial index, right ventricular systolic ...
Tentolouris K - - 1999
Seventy-two patients aged 2-65 years (mean 20.2) with fixed subaortic stenosis (FSS) are reported. All patients underwent echocardiography and angiography prior to surgical intervention. Sixty-four (89%) had discrete subaortic stenosis (DSS) and 8 (11%) tunnel type stenosis (TSS). Patients with DSS aged 2-65 years (mean 29) while patients with TSS ...
Altorjay A - - 1999
The main considerations in replacing the esophagus are to avoid postoperative necrosis of all or part of the graft, leakage or stenosis of the anastomoses, and complications related to acid-peptic or alkaline reflux. A 5-year-old boy, after two unsuccessful thoracic operations for atresia and then stenosis of the esophagus, underwent ...
Blaufox A D - - 1998
Patients with left ventricular hypoplasia and left-sided heart obstructive lesions other than critical aortic stenosis may be inappropriately subjected to single ventricular repair because their assessment is based on faulty qualitative evaluations or on quantitative methods developed for critical aortic stenosis. Patients with left ventricular hypoplasia and left-sided heart obstructions ...
Etchells E - - 1998
OBJECTIVE: To evaluate a bedside clinical prediction rule for detecting moderate or severe aortic stenosis. DESIGN: Cross-sectional study with independent comparison to a diagnostic reference standard, doppler echocardiography. SETTING: Urban university hospital. PARTICIPANTS: Consecutive hospital inpatients (n = 124) who had been referred for echocardiography. MEASUREMENTS AND MAIN RESULTS: Participants ...
Elhendy A - - 1998
OBJECTIVES: To compare the accuracy of dobutamine stress echocardiography (DSE) and simultaneous 99mTc sestamibi (MIBI) single-photon emission CT (SPECT) imaging for the diagnosis of coronary artery stenosis in women. PATIENTS: Seventy women with limited exercise capacity referred for evaluation of myocardial ischemia. METHODS: DSE (up to 40 microg/kg/min) was performed ...
Archie J P JP - - 1998
This study is an analysis of the outcome of a common method of management of the external carotid artery (ECA) during routine carotid endarterectomy (CEA). Between 1986 and 1997, 1069 primary CEAs were performed with a combination of proximal eversion technique and blind distal endarterectomy on the ECA. Of these, ...
Baumgart D - - 1998
BACKGROUND: Myocardial fractional flow reserve (FFR) is based on pressure measurements. We have now sought to establish a Doppler-based concept of relative flow velocity reserve (RFVR) for the functional assessment of stenosis severity in epicardial coronary arteries. A clear threshold value to discriminate the functional severity of a coronary stenosis ...
Isaaz K - - 1998
OBJECTIVES: We tested the value of transesophageal Doppler echocardiography (TEDE) for quantitating proximal left coronary artery (LCA) stenosis by using the continuity equation. BACKGROUND: The continuity equation applied to a stenosis states that the ratio of the time-velocity integral (TVI) of prestenotic to stenotic flow velocities is equal to the ...
Grech V - - 1998
The Maltese population constitutes an ideal location for epidemiological and historical studies dealing with congenital heart malformations. Pulmonary stenosis was studied retrospectively from 1943 to 1994. A sharp, significant decline in age at diagnosis was found, which predates the introduction of echocardiography. All defects are now diagnosed by echocardiography, which ...
Hunley Stephen O. - - 1998
We present the case of a 66-year-old woman presenting with pulmonary vein stenosis with a large descending thoracic aortic aneurysm. Pulmonary vein stenosis is a rare condition and can be caused by extrinsic compression, as well as by inflammatory diseases, congenital anomalies and related surgical repair, tuberculosis, and pulmonary veno-occlusive ...
Zbornikova V - - 1998
Different opinions exist about grading > 50% stenosis resulting from differences in angiographically estimated measurements and differences in weighing hemodynamic parameters at duplex scanning. The aim of this study was to reevaluate the correlation between duplex scanning measurements and angiographic findings in > 50% stenosis by using correlation coefficients instead ...
Kitazume H - - 1998
BACKGROUND: To examine the long-term outcome of coronary angioplasty, lesions that remained patent after 3 to 12 months were monitored angiographically at 3-year intervals. There were 252 lesions successfully dilated (from 83% +/- 13% preprocedural stenosis to 19% +/- 14% residual stenosis) between 1983 and 1986 that remained patent on ...
Stadius M L - - 1998
Eight consecutive patients with unstable angina underwent intravascular ultrasound imaging of the culprit artery with measurements recorded at the stenosis and at an adjacent reference site. In all patients, total artery cross-sectional area was smaller at the stenosis site than at the reference site, indicating that a structural change in ...
Sani A - - 1998
A method of treating tracheostomal stenosis post-laryngectomy is described. The carbon dioxide (CO2) laser is used to fashion and ablate two triangular areas lateral to the stenosed stoma to provide an immediate enlarged stoma for comfortable breathing. This simple procedure is done under local anaesthesia, is almost bloodless, safe and ...
Lester S J - - 1998
One of the challenges in clinical cardiology is to determine the optimal time of valve replacement surgery in patients with aortic stenosis. To meet this challenge, one requires an accurate knowledge of the natural history and rate of progression of the disease. This review will summarize the natural history of ...
Wise S W - - 1998
OBJECTIVE: This study assesses artifactual luminal distortion, or eccentricity, that affects measurement of stenosis on CT angiography performed with a variety of helical protocols. MATERIALS AND METHODS: A 32-vessel carotid artery phantom was built with five known grades of stenoses (25%, 50%, 75%, 88%, and 94%) and three lengths of ...
Changchien C R - - 1998
Rectal stenosis following low anterior resection is common. Several methods of treatment have been described. We introduce a simple method for the treatment of anastomotic stenosis using a conventional proctoscope and an electric knife with a Foley catheter as an anvil. Under direct vision, this technique can afford accurate and ...
DiSalle R S - - 1998
Midshunt stenosis and recurrent variceal bleeding occurred in 2 patients after transjugular intrahepatic portosystemic shunts (TIPS). Repeat angioplasty was performed in both cases but recurrent stenosis again led to hemorrhage. Expanded polytetrafluoroethylene (ePTFE) graft-covered stents were expanded in each of the TIPS at the midshunt, reducing the portosystemic gradient for ...
Thomas L - - 1998
Subaortic stenosis is rare in the middle-aged adult. Its association with tetralogy of Fallot is extremely rare. We report two middle-aged patients, presenting three decades after surgical repair of tetralogy of Fallot, with the rare association of subaortic stenosis. The clinical presentation in each patient mimicked residual pulmonary stenosis and ...
Al-Halees Z - - 1998
Use of autologous tissue in corrective cardiac operations offers many advantages including the potential for growth. We report a surgical technique using autologous pulmonary artery in the repair of supravalvar aortic stenosis in a 6-year-old child. At 30 months' follow-up, the pulmonary arterial tissue shows no evidence of calcification or ...
Aizawa H - - 1998
Coronary ostial stenosis in otherwise normal coronary vessels, is a rare complication of syphilitic aortitis, and most of the cases are found at autopsy. We report here a case in which bilateral coronary ostial stenosis and aortic regurgitation due to syphilitic aortitis was diagnosed; coronary artery bypass graft and aortic ...
O'Laughlin M P - - 1998
Stenosis of pulmonary arteries is one of the most challenging problems requiring treatment in the care of patients with congenital and acquired cardiopulmonary disease. Surgical approaches have been met with difficulty over the years, and may themselves lead to further distortion of the treated arteries. Balloon dilation first came into ...
Sharma J - - 1997
This report describes a rare case of moderate to severe valvular aortic stenosis in the setting of severe tricuspid stenosis, pulmonary atresia with intact interventricular septum and right ventricular dependent coronary circulation. We discuss the clinical, hemodynamic, echocardiographic and angiocardiographic findings on this rare case and comment on accompanied malformations, ...
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