Search Results
Results 401 - 450 of 1266
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van Hout B A - - 1998
Cost-effectiveness analyses are routinely performed to determine whether the additional cost of a novel therapy is balanced by additional effectiveness. The definitions of costs and effects involve a variety of assumptions, both in general economic terms and with regard to the specific medical setting under consideration. Similarly, differing criteria for ...
Miyazaki S - - 1998
This study evaluated the correlation of residual stenosis after percutaneous transluminal coronary angioplasty with the long-term prognosis. Among consecutive 1,230 patients who underwent coronary angioplasty in the National Cardiovascular Center in Osaka, Japan, 894 patients had de novo lesions. Of these, the 70 patients with acute myocardial infarctions and 105 ...
Caspi A - - 1998
The value of delayed percutaneous transluminal coronary angioplasty (> 12 h from admission or after thrombolytic therapy) following acute myocardial infarction is controversial. We compared the short- and long-term prognosis of 1940 consecutive patients after acute myocardial infarction, of whom 188 underwent delayed percutaneous transluminal coronary angioplasty. Delayed percutaneous transluminal ...
Sutton-Tyrrell K - - 1998
In the general population, peripheral atherosclerosis is a strong predictor of cardiovascular disease and death. In patients with known coronary artery disease, it is unclear whether the presence of additional noncoronary atherosclerosis is of further prognostic value. In the Bypass Angioplasty Revascularization Investigation, 5-year outcome was compared between patients with ...
Dukovcic A L - - 1998
Treatment of patients with coronary artery disease with severe left ventricular dysfunction (EF less than 25%) presents a special challenge to the health care team. The ability to revascularize coronary artery lesions using percutaneous transluminal coronary angioplasty is limited because of the risk of acute vessel closure, which can result ...
Omoigui N A - - 1998
OBJECTIVES: We sought to determine whether the results of the first Coronary Angioplasty Versus Excisional Atherectomy Trial (CAVEAT-I) influenced subsequent practice patterns among the investigators. BACKGROUND: CAVEAT-I demonstrated that directional coronary atherectomy (DCA) resulted in higher rates of early complications at a higher cost and with no clinical benefit. We ...
Agati L - - 1998
OBJECTIVES: This study sought to compare the impact of primary coronary angioplasty and thrombolytic therapy for acute myocardial infarction (AMI) on 1-month infarct size and microvascular perfusion. BACKGROUND: The effect of the reperfusion strategies of primary coronary angioplasty and thrombolytic therapy on microvascular integrity still remains to be determined. METHODS: ...
Rábago G - - 1998
The shortage of ideal donor hearts has led to an extension of the classical donor criteria of age. Higher incidence of focal coronary artery disease has been found in this older donor population requiring conventional angioplasty therapy. The authors present two patients with early coronary angiogram post transplantation, requiring angioplasty ...
Brener S J - - 1998
The angioplasty substudy of the GUSTO IIb trial confirmed that the short-term results of primary angioplasty are better than those of fibrinolytic therapy in patients with acute myocardial infarction (MI). In the largest and most rigorous study of this topic performed to date, 9.6% of patients who underwent primary angioplasty ...
Christian T F - - 1998
BACKGROUND: Direct coronary angioplasty is an effective therapy for acute myocardial infarction, but its success may be dependent on both ready availability and operator skill. The purpose of this study was to investigate the impact of the center performing direct coronary angioplasty for acute myocardial infarction while controlling for parameters ...
Lomama E - - 1998
BACKGROUND: The effect of mechanical reperfusion of the infarction-related artery on ventricular late potentials (VLP) continues to be debated. OBJECTIVE: To assess the influence of successful late coronary angioplasty on the prevalence of VLP after acute myocardial infarction (AMI). METHODS: We studied 113 consecutive patients (97 men, 16 women, mean ...
Siblini G - - 1998
Immediate- and short-term follow-up results of balloon dilatation of aortic recoarctation following surgery have been well documented, but there is sparse data on long-term follow-up. During a 10-year period ending in August 1995, 33 children, aged 2 months to 14 years old, underwent balloon angioplasty of aortic recoarctation. Prior surgery ...
Lindsay J J - - 1998
After rigorous screening by means of registries and controlled trials, various atherectomy devices, excimer laser catheters, and endoluminal stents were approved for general clinical use. Few data are available describing their safety and effectiveness after approval. This analysis was undertaken to assess the impact on patient outcomes of the unrestricted ...
Appelman Y E - - 1998
OBJECTIVES: To compare clinical outcome in patients with complex coronary lesions treated with either excimer laser coronary angioplasty (ELCA) or balloon angioplasty. PATIENTS AND DESIGN: 308 patients with stable angina and a coronary lesion of more than 10 mm in length were randomised to ELCA (151 patients, 158 lesions) or ...
van 't Hof A W - - 1998
BACKGROUND: Reperfusion therapy by primary coronary angioplasty has been shown to be beneficial for patients who present themselves up to 12 h after the onset of symptoms. However, the relationship between outcome and ischaemic time for patients who present relatively late after the onset of symptoms is still uncertain. The ...
Weaver W D - - 1997
OBJECTIVE: To provide a quantitative review of the treatment effects of primary coronary angioplasty vs intravenous thrombolysis for acute myocardial infarction. DATA SOURCES: Ten randomized trials were identified through computerized bibliographic search of MEDLINE from January 1985 through March 1996 and by queries of principal investigators. STUDY SELECTION: Single-center and ...
Lieu T A - - 1997
OBJECTIVES: This study sought to evaluate the cost-effectiveness of primary angioplasty for acute myocardial infarction under varying assumptions about effectiveness, existing facilities and staffing and volume of services. BACKGROUND: Primary angioplasty for acute myocardial infarction has reduced mortality in some studies, but its actual effectiveness may vary, and most U.S. ...
Lazar H L - - 1997
BACKGROUND: Emergency coronary artery bypass grafting after failed percutaneous transluminal coronary angioplasty is associated with increased mortality. METHODS: From 1981 through 1995, 117 patients at our institution underwent emergency coronary artery bypass grafting after failed percutaneous transluminal coronary angioplasty, with an in-hospital mortality rate of 13.6%. Univariate and multivariate analyses ...
Hodgson J M - - 1997
Percutaneous transluminal coronary angioplasty (PTCA) has been performed with 20 mm long uni-diameter balloons for over 17 years with excellent results. It has now become possible to combine both compliant and non-compliant balloon material on a single device, allowing the interventionalist to direct the force of dilation to the lesion ...
Yip H K - - 1997
Percutaneous transluminal coronary angioplasty was performed on 2 patients, each having an anomalous origin of the right coronary artery with anterior-superior orientation. Each patient had experienced post-infarction angina after an inferior wall myocardial infarction without antecedent thrombolytic therapy. The procedures were successfully performed with appropriate selection and manipulation of the ...
Holmes D R DR - - 1997
In the New Approaches to Coronary Intervention (NACI) registry, 887 patients were electively treated with excimer laser coronary angioplasty (ELCA) for coronary artery disease. The Advanced Interventional System (AIS) system was used in 487 cases; the Spectranetics system, in 400. The mean age was 63.4 years. Most patients had unstable ...
Iwabuchi M - - 1997
OBJECTIVES: This study sought to evaluate the intravascular structure as depicted by intravascular ultrasound after successful primary angioplasty (i.e., without thrombolytic therapy) for acute myocardial infarction and to investigate the related predictors of acute coronary occlusion. BACKGROUND: The usefulness of primary angioplasty for acute myocardial infarction is still limited by ...
Hlatky M A - - 1997
BACKGROUND: Coronary bypass surgery often leads to short-term cognitive dysfunction, whereas coronary angioplasty does not. Perioperative cognitive dysfunction usually resolves, although a subgroup of surgical patients may continue to exhibit long-term cognitive dysfunction. The purpose of this study was to compare cognitive function 5 years after randomization to a strategy ...
Song J K - - 1997
For survivors of aneurysmal subarachnoid hemorrhage, cerebral vasospasm significantly contributes to its morbidity and mortality by causing delayed ischemic neurological deficit. Noninvasive evaluation with computed tomography, transcranial doppler and single photon emission computerized tomography helps guide clinical decisions. Endovascular therapy of symptomatic vasospasm with balloon angioplasty and to a lesser ...
Price J F - - 1997
OBJECTIVES: To determine whether pre-angioplasty levels of haemostatic and rheological factors predicted restenosis of the dilated arterial segment following percutaneous transluminal angioplasty. DESIGN AND SETTING: Prospective study, Two regional hospital centres for angioplasty in Edinburgh and Glasgow, Scotland, UK. METHOD: Haemostatic and rheological factors were measured in 102 subjects with ...
Juergens C P - - 1997
The use of thrombolytic therapy has been widely accepted for the treatment of acute myocardial infarction. Despite improving mortality, thrombolytic therapy may be contraindicated in many patients presenting with myocardial infarction and is associated with a small, yet significant risk of hemorrhagic sequelae. This article outlines the rationale behind reperfusion ...
Tooth L - - 1997
The effect of a pre-coronary angioplasty education and counselling program on knowledge and psychological status of patients and on knowledge and quality of life/coping status of their spouses was evaluated. Forty patients and their spouses participated in a pre-coronary angioplasty education and counselling program and 40 served as controls. Knowledge, ...
Giannitsis E - - 1997
OBJECTIVE: The purpose of this study was to investigate the effect of brief myocardial ischemia and vascular trauma induced by elective percutaneous transluminal coronary angioplasty on in vivo 'priming' and activation of neutrophils. PATIENTS AND METHODS: We studied 16 patients undergoing elective coronary angioplasty for symptomatic coronary artery disease and ...
de Boer M J - - 1997
In recent years, thrombolysis has been established as the treatment of choice for patients with evolving myocardial infarction. Reperfusion of ischaemic myocardium through reopening of the occluded infarct-related vessel results in limitation of infarct size and reduction of morbidity and mortality. The landmark Global Utilisation of Streptokinase and Tissue plasminogen ...
Zijlstra F - - 1997
OBJECTIVE: To investigate the feasibility of primary coronary angioplasty as a treatment option in patients with acute myocardial infarction after initial diagnosis in a local community hospital. SETTING: Referral centre for interventional treatment of coronary artery disease. METHODS: During a five year period, 520 candidates for primary coronary angioplasty were ...
Lotan C - - 1997
The purpose of this study was to assess the clinical value of the transradial approach (TRA) in coronary angioplasty. During the 18Ðmonth period from June 1994 to December 1995, 250 patients (mean age 61 +/- 11) underwent coronary angioplasty using the transradial approach. In 7 (2.8%) radial puncture was unsuccessful ...
Kinn J W - - 1997
Although the mechanical complications of acute ventricular septal defect and acute mitral regurgitation are uncommon after acute myocardial infarction, these complications are associated with an extremely high morbidity and mortality. We hypothesized that the administration of thrombolytic drugs may result in hemorrhagic infarction as well as the potential for incomplete ...
Budde T - - 1997
It is not yet possible to predict an individual's outcome from percutaneous transluminal coronary angioplasty or alternative/adjunctive coronary interventional techniques. The purpose of the INTERVENT project is to redefine complications associated with coronary interventions, to set up a prognostic computer model to predict individual outcome and to compare the results ...
- - 1997
BACKGROUND: Adverse cardiovascular events associated with thrombotic occlusion occur in 4% to 12.8% of patients after coronary angioplasty. Recently, potent antiplatelet agents have been used to reduce those thrombotic complications. Tirofiban is a highly selective, short-acting inhibitor of fibrinogen binding to platelet glycoprotein (GP) IIb/IIIa that inhibits ex vivo platelet ...
Takeuchi M - - 1997
Although myocardial fractional flow reserve (FFRmyo) has been demonstrated to be a useful index for determining functional significance of coronary stenosis, the data in previous studies was derived from a highly selected group of patients. The aim of this study was to investigate the value of FFRmyo in a more ...
Nydahl S - - 1997
OBJECTIVE: To review the outcome of subintimal angioplasty of infrapopliteal artery occlusions in critically ischaemic limbs. DESIGN: Retrospective review. MATERIALS: Twenty-eight consecutive limbs with critical ischaemia that had undergone subintimal angioplasty of infrapopliteal occlusions. RESULTS: There were 32 infrapopliteal artery occlusions in 28 critically ischaemic limbs in 27 patients. The ...
Lewis B S - - 1997
BACKGROUND AND AIMS: Physiologic measurement of myocardial perfusion in the immediate postangioplasty period may complement the angiographic assessment of the outcome of the procedure and improve our ability to identify patients at increased risk for a suboptimal late result. Immediate in-lab identification of patients at risk for late coronary restenosis ...
Payne S P - - 1997
Angioplasty is often performed as an inpatient procedure after preliminary angiography. In order to increase efficiency and patient comfort we introduced a policy of performing angioplasty for chronic leg ischaemia as an outpatient whenever possible, using duplex scanning to select suitable lesions. This paper examines the safety and feasibility of ...
Hamburger J N - - 1997
OBJECTIVES: This study sought to prospectively evaluate the performance of a laser guide wire in crossing chronic total coronary occlusions in patients with a failed previous mechanical guide wire attempt. BACKGROUND: Despite continued refinement of mechanical hardware available for coronary angioplasty, restoration and maintenance of blood flow through a chronically ...
Kee F - - 1997
OBJECTIVES: To describe what cardiac patients in Northern Ireland understand to be the benefits of coronary angioplasty and assess the extent to which they have been able to make informed choices about their treatment. DESIGN: An interview based questionnaire survey completed after the patients had undergone coronary angiography, within hours ...
Webb J - - 1997
The Arrow-Fischell pullback atherectomy catheter is designed to circumferentially debulk and retrieve coronary atheroma. We performed pullback atherectomy before balloon angioplasty or stenting in 41 patients. The device crossed the target lesion in 38 (93%) and obtained tissue in 36 (88%). All procedures were completed successfully and without myocardial infarction, ...
Topol E J - - 1997
Abciximab, a monoclonal antibody fragment against the platelet receptor alphaIIb beta3 integrin, prevents platelet aggregation. A randomized, placebo-controlled study showed that abciximab improves outcomes for patients undergoing percutaneous coronary angioplasty at 30 days and at 6 months. To determine whether abciximab improves outcomes 3 years after coronary angioplasty. Double-blind, placebo-controlled, ...
Condado J A - - 1997
BACKGROUND: Ionizing radiation has been shown to reduce neointimal formation after balloon angioplasty in experimental models of restenosis. This study was designed to evaluate the feasibility, safety, and effectiveness of intracoronary radiation therapy (ICRT) after percutaneous transluminal coronary angioplasty (PTCA) for preventing restenosis in human coronary arteries. METHODS AND RESULTS: ...
Meneveau N - - 1997
AIMS: This trial was undertaken to assess the impact of late reopening of the infarct-related artery on left ventricular remodelling in post-myocardial infarction patients. METHODS: One hundred and fifty seven patients with recent myocardial infarction were routinely submitted to delayed (second week) catheterization. They also underwent systematic angioplasty of a ...
Takeuchi M - - 1997
We report the case of a patient who underwent coronary angioplasty for a severe stenosis at the site of a myocardial bridge. Although favorable angiographic results and the disappearance of myocardial ischemia were obtained, a significant pressure gradient across the lesion and abnormal myocardial fractional flow reserve remained immediately following ...
Waksman R - - 1997
Percutaneous treatment of saphenous vein graft (SVG) stenosis has been established as an alternative to repeat coronary artery bypass grafting. Intracoronary Palmaz-Schatz stent (PSS) and directional coronary atherectomy (DCA) have been suggested to provide better short- and long-term results than balloon angioplasty. Records of 840 patients with 931 SVG lesions ...
Mack M J - - 1997
A case is presented of left main coronary artery stenosis in a patient with significant comorbidities who was successfully managed with minimally invasive direct coronary artery bypass as protection before percutaneous transluminal coronary angioplasty. This "hybrid" approach for the management of a high-risk patient led to a favorable outcome.
Aroney C N - - 1997
Coronary angioplasty has changed dramatically in the past three years with major reductions in suboptimal results and restenosis rates, and improvements in safety, efficacy and cost-effectiveness. Intracoronary stent implantation with optimisation of strut expansion and the abandonment of anticoagulants after deployment, have led to less entry-site complications, facilitated early hospital ...
Allen P J - - 1997
BACKGROUND: The optimal material for carotid patch angioplasty after endarterectomy remains uncertain. This study compares the early outcome and recurrent stenosis rates between saphenous vein (SV) and expanded polytetrafluoroethylene (ePTFE) carotid patch angioplasty. METHODS: The results of 421 consecutive carotid endarterectomies performed over a 72-month period were reviewed. Postoperative complications ...
Ozaki Y - - 1997
BACKGROUND: Debate exists regarding the relationship between angiographic and intracoronary ultrasound (ICUS) measurements of minimal luminal cross-sectional area after coronary intervention. We investigated this and the factors that may influence it by using ICUS and quantitative angiography. METHODS AND RESULTS: Patients who underwent successful balloon angioplasty (n=100) or directional atherectomy ...
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